Trial Outcomes & Findings for Safety and Immunogenicity of Simultaneous Tdap and IIV in Pregnant Women (NCT NCT02783170)

NCT ID: NCT02783170

Last Updated: 2025-07-28

Results Overview

Percentage of injection-site reactions will be compared in simultaneous and sequential groups as determined by self-assessment via memory aid

Recruitment status

COMPLETED

Study phase

PHASE4

Target enrollment

81 participants

Primary outcome timeframe

8 days post vaccine administration

Results posted on

2025-07-28

Participant Flow

Participant milestones

Participant milestones
Measure
Simultaneous Vaccination Arm
In the study arm,subjects will receive both Tdap and IIV vaccines during study visit 1. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Sequential Vaccination Arm
In this study arm, subjects will receive the IIV vaccine during study visit 1. Approximately 3 weeks later, they will receive the Tdap vaccine during study visit 4. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Overall Study
STARTED
43
38
Overall Study
Safety Population
42
38
Overall Study
COMPLETED
42
38
Overall Study
NOT COMPLETED
1
0

Reasons for withdrawal

Reasons for withdrawal
Measure
Simultaneous Vaccination Arm
In the study arm,subjects will receive both Tdap and IIV vaccines during study visit 1. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Sequential Vaccination Arm
In this study arm, subjects will receive the IIV vaccine during study visit 1. Approximately 3 weeks later, they will receive the Tdap vaccine during study visit 4. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Overall Study
Randomized but not Vaccinated
1
0

Baseline Characteristics

Safety and Immunogenicity of Simultaneous Tdap and IIV in Pregnant Women

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Simultaneous Vaccination Arm
n=42 Participants
In the study arm,subjects will receive both Tdap and IIV vaccines during study visit 1. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Sequential Vaccination Arm
n=38 Participants
In this study arm, subjects will receive the IIV vaccine during study visit 1. Approximately 21 days later, they will receive the Tdap vaccine during study visit 4. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Total
n=80 Participants
Total of all reporting groups
Age, Customized
Maternal Age
27 Years
n=99 Participants
25.5 Years
n=107 Participants
26 Years
n=206 Participants
Sex: Female, Male
Female
42 Participants
n=99 Participants
38 Participants
n=107 Participants
80 Participants
n=206 Participants
Sex: Female, Male
Male
0 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
7 Participants
n=99 Participants
5 Participants
n=107 Participants
12 Participants
n=206 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
34 Participants
n=99 Participants
33 Participants
n=107 Participants
67 Participants
n=206 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
1 Participants
n=99 Participants
0 Participants
n=107 Participants
1 Participants
n=206 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
Race (NIH/OMB)
Asian
0 Participants
n=99 Participants
1 Participants
n=107 Participants
1 Participants
n=206 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
Race (NIH/OMB)
Black or African American
17 Participants
n=99 Participants
17 Participants
n=107 Participants
34 Participants
n=206 Participants
Race (NIH/OMB)
White
22 Participants
n=99 Participants
17 Participants
n=107 Participants
39 Participants
n=206 Participants
Race (NIH/OMB)
More than one race
3 Participants
n=99 Participants
2 Participants
n=107 Participants
5 Participants
n=206 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
n=99 Participants
1 Participants
n=107 Participants
1 Participants
n=206 Participants
Region of Enrollment
United States
42 Participants
n=99 Participants
38 Participants
n=107 Participants
80 Participants
n=206 Participants
Recent Tdap Vaccine within 2 years
5 Participants
n=99 Participants
5 Participants
n=107 Participants
10 Participants
n=206 Participants
Recent Flu Vaccine within 2 years
8 Participants
n=99 Participants
7 Participants
n=107 Participants
15 Participants
n=206 Participants
Gestational Age in Weeks at Visit 1
29.1 Weeks
n=99 Participants
28 Weeks
n=107 Participants
28.7 Weeks
n=206 Participants
Gestational Age in Weeks at Visit 4
32.6 Weeks
n=99 Participants
31.9 Weeks
n=107 Participants
32.3 Weeks
n=206 Participants

PRIMARY outcome

Timeframe: 8 days post vaccine administration

Population: Safety Population - subjects that were randomized and received the study intervention

Percentage of injection-site reactions will be compared in simultaneous and sequential groups as determined by self-assessment via memory aid

Outcome measures

Outcome measures
Measure
Simultaneous Vaccination Arm
n=42 Participants
In the study arm,subjects will receive both Tdap and IIV vaccines during study visit 1. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Sequential Vaccination Arm
n=38 Participants
In this study arm, subjects will receive the IIV vaccine during study visit 1. Approximately 3 weeks later, they will receive the Tdap vaccine during study visit 4. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Flu Tenderness : Moderate
12.5 percentage of participants
Interval 4.2 to 26.8
8.1 percentage of participants
Interval 1.7 to 21.9
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Flu Tenderness : Severe
0 percentage of participants
Interval to 8.8
Cannot estimate lower bound as percentage is 0
0 percentage of participants
Interval to 9.5
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Flu Tenderness : None
32.5 percentage of participants
Interval 18.6 to 49.1
54.1 percentage of participants
Interval 36.9 to 70.5
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Flu Tenderness : Mild
55.0 percentage of participants
Interval 38.5 to 70.7
37.8 percentage of participants
Interval 22.5 to 55.2
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Flu Pain : None
47.5 percentage of participants
Interval 31.5 to 63.9
48.6 percentage of participants
Interval 31.9 to 65.6
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Flu Pain : Mild
37.5 percentage of participants
Interval 22.7 to 54.2
45.9 percentage of participants
Interval 29.5 to 63.1
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Flu Pain : Moderate
15.0 percentage of participants
Interval 5.7 to 29.8
5.4 percentage of participants
Interval 0.7 to 18.2
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Flu Pain : Severe
0 percentage of participants
Interval to 8.8
Cannot estimate lower bound as percentage is 0
0 percentage of participants
Interval to 9.5
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Tdap Pain : None
55.0 percentage of participants
Interval 38.5 to 70.7
70.6 percentage of participants
Interval 52.5 to 84.9
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Tdap Pain : Mild
30.0 percentage of participants
Interval 16.6 to 46.5
14.7 percentage of participants
Interval 5.0 to 31.1
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Tdap Pain : Moderate
10.0 percentage of participants
Interval 2.8 to 23.7
14.7 percentage of participants
Interval 5.0 to 31.1
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Tdap Pain : Severe
5.0 percentage of participants
Interval 0.6 to 16.9
0 percentage of participants
Interval to 10.3
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Tdap Tenderness : None
37.5 percentage of participants
Interval 22.7 to 54.2
50.0 percentage of participants
Interval 32.4 to 67.6
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Tdap Tenderness : Mild
37.5 percentage of participants
Interval 22.7 to 54.2
17.6 percentage of participants
Interval 6.8 to 34.5
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Tdap Tenderness : Moderate
22.5 percentage of participants
Interval 10.8 to 38.5
29.4 percentage of participants
Interval 15.1 to 47.5
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Tdap Tenderness : Severe
2.5 percentage of participants
Interval 0.1 to 13.2
2.9 percentage of participants
Interval 0.1 to 15.3
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Flu Redness : None
92.5 percentage of participants
Interval 79.6 to 98.4
83.8 percentage of participants
Interval 68.0 to 93.8
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Flu Redness : Mild
7.5 percentage of participants
Interval 1.6 to 20.4
13.5 percentage of participants
Interval 4.5 to 28.8
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Flu Redness : Moderate
0 percentage of participants
Interval to 8.8
Cannot estimate lower bound as percentage is 0
2.7 percentage of participants
Interval 0.7 to 14.2
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Flu Redness : Severe
0 percentage of participants
Interval to 8.8
Cannot estimate lower bound as percentage is 0
0 percentage of participants
Interval to 9.5
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Flu Swelling : None
92.5 percentage of participants
Interval 79.6 to 98.4
89.2 percentage of participants
Interval 74.6 to 97.0
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Flu Swelling : Mild
7.5 percentage of participants
Interval 1.6 to 20.4
8.1 percentage of participants
Interval 1.7 to 21.9
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Flu Swelling : Moderate
0 percentage of participants
Interval to 8.8
Cannot estimate lower bound as percentage is 0
2.7 percentage of participants
Interval 0.7 to 14.2
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Flu Swelling : Severe
0 percentage of participants
Interval to 8.8
Cannot estimate lower bound as percentage is 0
0 percentage of participants
Interval 0.0 to 9.5
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Tdap Redness : None
85.0 percentage of participants
Interval 70.2 to 94.3
82.4 percentage of participants
Interval 65.5 to 93.2
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Tdap Redness : Mild
15.0 percentage of participants
Interval 5.7 to 29.8
11.8 percentage of participants
Interval 3.3 to 27.5
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Tdap Redness : Moderate
0 percentage of participants
Interval to 8.8
Cannot estimate lower bound as percentage is 0
5.9 percentage of participants
Interval 0.7 to 19.7
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Tdap Redness : Severe
0 percentage of participants
Interval to 8.8
Cannot estimate lower bound as percentage is 0
0 percentage of participants
Interval to 10.3
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Tdap Swelling : None
82.5 percentage of participants
Interval 67.2 to 92.7
85.3 percentage of participants
Interval 68.9 to 95.0
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Tdap Swelling : Mild
17.5 percentage of participants
Interval 7.3 to 32.8
11.8 percentage of participants
Interval 3.3 to 27.5
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Tdap Swelling : Moderate
0 percentage of participants
Interval to 8.8
Cannot estimate lower bound as percentage is 0
2.9 percentage of participants
Interval 0.1 to 14.2
Percentage of Participants With Injection-site Reactions Post Tdap and IIV4 Administration
Tdap Swelling : Severe
0 percentage of participants
Interval to 8.8
Cannot estimate lower bound as percentage is 0
0 percentage of participants
Interval to 10.3
Cannot estimate lower bound as percentage is 0

PRIMARY outcome

Timeframe: 8 days post vaccine administration

Population: Safety Population - subjects that were randomized and received the study intervention. Participants analyzed include those that provided data.

Percentage of systemic reactions will be compared in simultaneous and sequential groups as determined by self-assessment via memory aid

Outcome measures

Outcome measures
Measure
Simultaneous Vaccination Arm
n=40 Participants
In the study arm,subjects will receive both Tdap and IIV vaccines during study visit 1. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Sequential Vaccination Arm
n=37 Participants
In this study arm, subjects will receive the IIV vaccine during study visit 1. Approximately 3 weeks later, they will receive the Tdap vaccine during study visit 4. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Fever : None
100.0 percentage of participants
Interval 91.2 to 100.0
94.6 percentage of participants
Interval 81.8 to 99.3
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Fatigue : None
65.0 percentage of participants
Interval 48.3 to 79.4
78.4 percentage of participants
Interval 61.8 to 90.2
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Fever : Mild
0 percentage of participants
Interval to 8.8
Cannot estimate lower bound as percentage is 0
0 percentage of participants
Interval to 9.5
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Fever : Moderate
0 percentage of participants
Interval to 8.8
Cannot estimate lower bound as percentage is 0
0 percentage of participants
Interval to 9.5
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Fever : Severe
0 percentage of participants
Interval to 8.8
Cannot estimate lower bound as percentage is 0
5.4 percentage of participants
Interval 0.7 to 18.2
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Abdominal Pain : None
90.0 percentage of participants
Interval 76.3 to 97.2
97.3 percentage of participants
Interval 85.8 to 99.9
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Abdominal Pain : Mild
7.5 percentage of participants
Interval 1.6 to 20.4
2.7 percentage of participants
Interval 0.1 to 14.2
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Abdominal Pain : Moderate
2.5 percentage of participants
Interval 0.1 to 13.2
0 percentage of participants
Interval to 9.5
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Abdominal Pain : Severe
0 percentage of participants
Interval to 8.8
Cannot estimate lower bound as percentage is 0
0 percentage of participants
Interval to 9.5
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Body Aches : None
65.0 percentage of participants
Interval 48.3 to 79.4
78.4 percentage of participants
Interval 61.8 to 90.2
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Body Aches : Mild
20.0 percentage of participants
Interval 9.1 to 35.6
18.9 percentage of participants
Interval 8.0 to 35.2
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Body Aches : Moderate
15.0 percentage of participants
Interval 5.7 to 29.8
2.7 percentage of participants
Interval 0.1 to 14.2
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Body Aches : Severe
0 percentage of participants
Interval to 8.8
Cannot estimate lower bound as percentage is 0
0 percentage of participants
Interval to 9.5
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Body Rash : None
90.0 percentage of participants
Interval 76.3 to 97.2
97.3 percentage of participants
Interval 85.8 to 99.9
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Body Rash : Mild
5.0 percentage of participants
Interval 0.6 to 16.9
0 percentage of participants
Interval to 9.5
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Body Rash : Moderate
2.5 percentage of participants
Interval 0.1 to 13.2
2.7 percentage of participants
Interval 0.1 to 14.2
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Body Rash : Severe
2.5 percentage of participants
Interval 0.1 to 13.2
0 percentage of participants
Interval to 9.5
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Chills Shivering : None
90.0 percentage of participants
Interval 76.3 to 97.2
91.9 percentage of participants
Interval 78.1 to 98.3
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Chills Shivering : Mild
5.0 percentage of participants
Interval 0.6 to 16.9
8.1 percentage of participants
Interval 1.7 to 21.9
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Chills Shivering : Moderate
5.0 percentage of participants
Interval 0.6 to 16.9
0 percentage of participants
Interval to 9.5
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Chills Shivering : Severe
0 percentage of participants
Interval to 8.8
Cannot estimate lower bound as percentage is 0
0 percentage of participants
Interval to 9.5
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Diarrhea : None
87.5 percentage of participants
Interval 73.2 to 95.8
89.2 percentage of participants
Interval 74.6 to 97.0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Diarrhea : Mild
10.0 percentage of participants
Interval 2.8 to 23.7
10.8 percentage of participants
Interval 3.0 to 25.4
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Diarrhea : Moderate
2.5 percentage of participants
Interval 0.1 to 13.2
0 percentage of participants
Interval to 9.5
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Diarrhea : Severe
0 percentage of participants
Interval to 8.8
Cannot estimate lower bound as percentage is 0
0 percentage of participants
Interval to 9.5
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Fatigue : Mild
20.0 percentage of participants
Interval 9.1 to 35.6
16.2 percentage of participants
Interval 6.2 to 32.0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Fatigue : Moderate
15.0 percentage of participants
Interval 5.7 to 29.8
5.4 percentage of participants
Interval 0.7 to 18.2
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Fatigue : Severe
0 percentage of participants
Interval to 8.8
Cannot estimate lower bound as percentage is 0
0 percentage of participants
Interval to 9.5
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Headache : None
70.0 percentage of participants
Interval 53.5 to 83.4
75.7 percentage of participants
Interval 58.8 to 88.2
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Headache : Mild
15.0 percentage of participants
Interval 5.7 to 29.8
18.9 percentage of participants
Interval 8.0 to 35.2
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Headache : Moderate
15.0 percentage of participants
Interval 5.7 to 29.8
5.4 percentage of participants
Interval 0.7 to 18.2
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Headache : Severe
0 percentage of participants
Interval to 8.8
Cannot estimate lower bound as percentage is 0
0 percentage of participants
Interval to 9.5
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Joint Pain : None
82.5 percentage of participants
Interval 67.2 to 92.7
91.9 percentage of participants
Interval 78.1 to 98.3
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Joint Pain : Mild
15.0 percentage of participants
Interval 5.7 to 29.8
2.7 percentage of participants
Interval 0.1 to 14.2
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Joint Pain : Moderate
2.5 percentage of participants
Interval 0.1 to 13.2
5.4 percentage of participants
Interval 0.7 to 18.2
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Joint Pain : Severe
0 percentage of participants
Interval to 8.8
Cannot estimate lower bound as percentage is 0
0 percentage of participants
Interval to 9.5
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Nausea : None
87.5 percentage of participants
Interval 73.2 to 95.8
89.2 percentage of participants
Interval 74.6 to 97.0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Nausea : Mild
7.5 percentage of participants
Interval 1.6 to 20.4
10.8 percentage of participants
Interval 3.0 to 25.4
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Nausea : Moderate
5.0 percentage of participants
Interval 0.6 to 16.9
0 percentage of participants
Interval to 9.5
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Nausea : Severe
0 percentage of participants
Interval to 8.8
Cannot estimate lower bound as percentage is 0
0 percentage of participants
Interval to 9.5
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Vomiting : None
85.0 percentage of participants
Interval 70.2 to 94.3
97.3 percentage of participants
Interval 85.8 to 99.9
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Vomiting : Mild
5.0 percentage of participants
Interval 0.6 to 16.9
2.7 percentage of participants
Interval 0.1 to 14.2
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Vomiting : Moderate
10 percentage of participants
Interval 2.8 to 23.7
0 percentage of participants
Interval to 9.5
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 1
Vomiting : Severe
0 percentage of participants
Interval to 8.8
Cannot estimate lower bound as percentage is 0
0 percentage of participants
Interval to 9.5
Cannot estimate lower bound as percentage is 0

PRIMARY outcome

Timeframe: 8 days post vaccine administration

Population: Safety Population - subjects that were randomized and received the study intervention. Participants analyzed include those that provided data.

Percentage of systemic reactions will be compared in simultaneous and sequential groups as determined by self-assessment via memory aid

Outcome measures

Outcome measures
Measure
Simultaneous Vaccination Arm
n=38 Participants
In the study arm,subjects will receive both Tdap and IIV vaccines during study visit 1. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Sequential Vaccination Arm
n=34 Participants
In this study arm, subjects will receive the IIV vaccine during study visit 1. Approximately 3 weeks later, they will receive the Tdap vaccine during study visit 4. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Body Rash : Severe
0 percentage of participants
Interval to 9.3
Cannot estimate lower bound as percentage is 0
0 percentage of participants
Interval to 10.3
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Fever : None
97.4 percentage of participants
Interval 86.2 to 99.9
100.0 percentage of participants
Interval 89.7 to 100.0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Fever : Mild
2.6 percentage of participants
Interval 0.1 to 13.8
0 percentage of participants
Interval to 10.3
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Abdominal Pain : Severe
0 percentage of participants
Interval to 9.3
Cannot estimate lower bound as percentage is 0
0 percentage of participants
Interval to 10.3
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Body Aches : None
92.1 percentage of participants
Interval 78.6 to 98.3
82.4 percentage of participants
Interval 65.5 to 93.2
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Body Aches : Mild
0 percentage of participants
Interval to 9.3
Cannot estimate lower bound as percentage is 0
11.8 percentage of participants
Interval 3.3 to 27.5
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Body Aches : Moderate
5.3 percentage of participants
Interval 0.6 to 17.7
5.9 percentage of participants
Interval 0.7 to 19.7
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Body Aches : Severe
2.6 percentage of participants
Interval 0.1 to 13.8
0 percentage of participants
Interval to 10.3
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Body Rash : None
100.0 percentage of participants
Interval 90.7 to 100.0
100.0 percentage of participants
Interval 89.7 to 100.0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Body Rash : Mild
0 percentage of participants
Interval to 9.3
Cannot estimate lower bound as percentage is 0
0 percentage of participants
Interval to 10.3
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Body Rash : Moderate
0 percentage of participants
Interval to 9.3
Cannot estimate lower bound as percentage is 0
0 percentage of participants
Interval to 10.3
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Chills Shivering : None
94.7 percentage of participants
Interval 82.3 to 99.4
97.1 percentage of participants
Interval 84.7 to 99.9
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Chills Shivering : Mild
5.3 percentage of participants
Interval 0.6 to 17.7
2.9 percentage of participants
Interval 0.1 to 15.3
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Chills Shivering : Moderate
0 percentage of participants
Interval to 9.3
Cannot estimate lower bound as percentage is 0
0 percentage of participants
Interval to 10.3
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Chills Shivering : Severe
0 percentage of participants
Interval to 9.3
Cannot estimate lower bound as percentage is 0
0 percentage of participants
Interval to 10.3
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Diarrhea : None
97.4 percentage of participants
Interval 86.2 to 99.9
97.1 percentage of participants
Interval 84.7 to 99.9
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Diarrhea : Mild
0 percentage of participants
Interval to 9.3
Cannot estimate lower bound as percentage is 0
2.9 percentage of participants
Interval 0.1 to 15.3
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Diarrhea : Moderate
2.6 percentage of participants
Interval 0.1 to 13.8
0 percentage of participants
Interval to 10.3
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Diarrhea : Severe
0 percentage of participants
Interval to 9.3
Cannot estimate lower bound as percentage is 0
0 percentage of participants
Interval to 10.3
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Fatigue : None
84.2 percentage of participants
Interval 68.7 to 94.0
85.3 percentage of participants
Interval 68.9 to 95.0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Fatigue : Mild
5.3 percentage of participants
Interval 0.6 to 17.7
11.8 percentage of participants
Interval 3.3 to 27.5
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Fatigue : Moderate
10.5 percentage of participants
Interval 2.9 to 24.8
2.9 percentage of participants
Interval 0.1 to 15.3
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Fatigue : Severe
0 percentage of participants
Interval to 9.3
Cannot estimate lower bound as percentage is 0
0 percentage of participants
Interval to 10.3
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Headache : None
92.1 percentage of participants
Interval 78.6 to 98.3
79.4 percentage of participants
Interval 62.1 to 91.3
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Headache : Mild
2.6 percentage of participants
Interval 0.1 to 13.8
14.7 percentage of participants
Interval 5.0 to 31.1
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Headache : Moderate
2.6 percentage of participants
Interval 0.1 to 13.8
5.9 percentage of participants
Interval 0.7 to 19.7
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Headache : Severe
2.6 percentage of participants
Interval 0.1 to 13.8
0 percentage of participants
Interval to 10.3
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Joint Pain : None
100.0 percentage of participants
Interval 90.7 to 100.0
94.1 percentage of participants
Interval 80.3 to 99.3
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Joint Pain : Mild
0 percentage of participants
Interval to 9.3
Cannot estimate lower bound as percentage is 0
0 percentage of participants
Interval to 10.3
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Joint Pain : Moderate
0 percentage of participants
Interval to 9.3
Cannot estimate lower bound as percentage is 0
5.9 percentage of participants
Interval 0.7 to 19.7
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Joint Pain : Severe
0 percentage of participants
Interval to 9.3
Cannot estimate lower bound as percentage is 0
0 percentage of participants
Interval to 10.3
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Nausea : None
94.7 percentage of participants
Interval 82.3 to 99.4
82.4 percentage of participants
Interval 65.5 to 93.2
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Nausea : Mild
2.6 percentage of participants
Interval 0.1 to 13.8
8.8 percentage of participants
Interval 1.9 to 23.7
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Nausea : Moderate
2.6 percentage of participants
Interval 0.1 to 13.8
5.9 percentage of participants
Interval 0.7 to 19.7
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Nausea : Severe
0 percentage of participants
Interval to 9.3
Cannot estimate lower bound as percentage is 0
2.9 percentage of participants
Interval 0.1 to 15.3
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Vomiting : None
94.7 percentage of participants
Interval 82.3 to 99.4
91.2 percentage of participants
Interval 76.3 to 98.1
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Vomiting : Mild
5.3 percentage of participants
Interval 0.6 to 17.7
2.9 percentage of participants
Interval 0.1 to 15.3
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Vomiting : Moderate
0 percentage of participants
Interval to 9.3
Cannot estimate lower bound as percentage is 0
2.9 percentage of participants
Interval 0.1 to 15.3
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Vomiting : Severe
0 percentage of participants
Interval to 9.3
Cannot estimate lower bound as percentage is 0
2.9 percentage of participants
Interval 0.1 to 15.3
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Fever : Moderate
0 percentage of participants
Interval to 9.3
Cannot estimate lower bound as percentage is 0
0 percentage of participants
Interval to 10.3
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Fever : Severe
0 percentage of participants
Interval to 9.3
Cannot estimate lower bound as percentage is 0
0 percentage of participants
Interval to 10.3
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Abdominal Pain : None
97.4 percentage of participants
Interval 86.2 to 99.9
100.0 percentage of participants
Interval 89.7 to 100.0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Abdominal Pain : Mild
0 percentage of participants
Interval to 9.3
Cannot estimate lower bound as percentage is 0
0 percentage of participants
Interval to 10.3
Cannot estimate lower bound as percentage is 0
Percentage of Participants With Systemic Reactions Post Tdap and IIV4 Administration - Visit 4
Abdominal Pain : Moderate
2.6 percentage of participants
Interval 0.1 to 13.8
0 percentage of participants
Interval to 10.3
Cannot estimate lower bound as percentage is 0

PRIMARY outcome

Timeframe: Pre-vaccination and approximately 21 days post vaccination and at Delivery

Population: Safety Population - subjects that were randomized and received the study intervention. Participants analyzed include those that provided data.

Measurement of serum antibody levels to pertussis antigens, in maternal blood pre- and post-vaccination, maternal blood at delivery and infant cord blood obtained at delivery

Outcome measures

Outcome measures
Measure
Simultaneous Vaccination Arm
n=42 Participants
In the study arm,subjects will receive both Tdap and IIV vaccines during study visit 1. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Sequential Vaccination Arm
n=38 Participants
In this study arm, subjects will receive the IIV vaccine during study visit 1. Approximately 3 weeks later, they will receive the Tdap vaccine during study visit 4. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Pertussis Serum Antibody Levels, as Measured by Geometric Mean Titers
Pre-Vaccination - FHA
27.5 Concentration (IU/mL)
Interval 18.5 to 41.0
37.0 Concentration (IU/mL)
Interval 23.8 to 57.6
Pertussis Serum Antibody Levels, as Measured by Geometric Mean Titers
Pre-Vaccination - FIM
87.3 Concentration (IU/mL)
Interval 46.9 to 162.4
20.8 Concentration (IU/mL)
Interval 10.5 to 41.1
Pertussis Serum Antibody Levels, as Measured by Geometric Mean Titers
Pre-Vaccination - PRN
44.8 Concentration (IU/mL)
Interval 27.3 to 73.7
47.1 Concentration (IU/mL)
Interval 26.4 to 83.9
Pertussis Serum Antibody Levels, as Measured by Geometric Mean Titers
Pre-Vaccination - PT
7.8 Concentration (IU/mL)
Interval 5.1 to 11.9
5.9 Concentration (IU/mL)
Interval 3.5 to 10.1
Pertussis Serum Antibody Levels, as Measured by Geometric Mean Titers
Post-Vaccination - FHA
171.3 Concentration (IU/mL)
Interval 135.0 to 217.7
262.1 Concentration (IU/mL)
Interval 201.5 to 341.0
Pertussis Serum Antibody Levels, as Measured by Geometric Mean Titers
Post-Vaccination - FIM
99.9 Concentration (IU/mL)
Interval 55.9 to 178.7
19.7 Concentration (IU/mL)
Interval 10.2 to 38.1
Pertussis Serum Antibody Levels, as Measured by Geometric Mean Titers
Post-Vaccination - PRN
242.1 Concentration (IU/mL)
Interval 178.1 to 329.2
360.4 Concentration (IU/mL)
Interval 240.8 to 539.4
Pertussis Serum Antibody Levels, as Measured by Geometric Mean Titers
Post-Vaccination - PT
37.6 Concentration (IU/mL)
Interval 26.8 to 52.9
38.6 Concentration (IU/mL)
Interval 28.4 to 52.3
Pertussis Serum Antibody Levels, as Measured by Geometric Mean Titers
Maternal - FHA
118.3 Concentration (IU/mL)
Interval 89.9 to 155.6
199.8 Concentration (IU/mL)
Interval 146.7 to 272.1
Pertussis Serum Antibody Levels, as Measured by Geometric Mean Titers
Maternal - FIM
81.2 Concentration (IU/mL)
Interval 44.0 to 149.9
18.9 Concentration (IU/mL)
Interval 10.3 to 34.9
Pertussis Serum Antibody Levels, as Measured by Geometric Mean Titers
Maternal - PRN
174.1 Concentration (IU/mL)
Interval 122.0 to 248.5
297.1 Concentration (IU/mL)
Interval 194.7 to 453.4
Pertussis Serum Antibody Levels, as Measured by Geometric Mean Titers
Maternal - PT
26.8 Concentration (IU/mL)
Interval 19.3 to 37.4
27.9 Concentration (IU/mL)
Interval 19.4 to 40.1
Pertussis Serum Antibody Levels, as Measured by Geometric Mean Titers
Cord Blood - FHA
182 Concentration (IU/mL)
Interval 137.0 to 241.8
265.6 Concentration (IU/mL)
Interval 195.8 to 360.3
Pertussis Serum Antibody Levels, as Measured by Geometric Mean Titers
Cord Blood - FIM
122.2 Concentration (IU/mL)
Interval 67.5 to 221.5
32.2 Concentration (IU/mL)
Interval 17.5 to 59.4
Pertussis Serum Antibody Levels, as Measured by Geometric Mean Titers
Cord Blood - PRN
245.4 Concentration (IU/mL)
Interval 171.8 to 350.3
352.1 Concentration (IU/mL)
Interval 230.7 to 537.5
Pertussis Serum Antibody Levels, as Measured by Geometric Mean Titers
Cord Blood - PT
46 Concentration (IU/mL)
Interval 32.4 to 65.2
43.4 Concentration (IU/mL)
Interval 29.8 to 62.3

PRIMARY outcome

Timeframe: Pre vaccination and approximately 21 days post vaccination and at Delivery

Population: Safety Population - subjects that were randomized and received the study intervention. Participants analyzed include those that provided data.

Measurement of serum antibody levels to diphtheria toxoids, in maternal blood pre- and post-vaccination, maternal blood at delivery and infant cord blood obtained at delivery

Outcome measures

Outcome measures
Measure
Simultaneous Vaccination Arm
n=41 Participants
In the study arm,subjects will receive both Tdap and IIV vaccines during study visit 1. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Sequential Vaccination Arm
n=37 Participants
In this study arm, subjects will receive the IIV vaccine during study visit 1. Approximately 3 weeks later, they will receive the Tdap vaccine during study visit 4. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Percentage of Subjects With Seroprotection as Determined by Diphtheria Serum Antibody Levels (Defined as ≥ 0.1 IU/mL)
Pre-Vaccination
62.5 percentage of participants
Interval 45.8 to 77.3
76.3 percentage of participants
Interval 59.8 to 88.6
Percentage of Subjects With Seroprotection as Determined by Diphtheria Serum Antibody Levels (Defined as ≥ 0.1 IU/mL)
Post-Vaccination
92.7 percentage of participants
Interval 80.1 to 98.5
100 percentage of participants
Interval 90.5 to
Cannot be estimated - value is already 100%
Percentage of Subjects With Seroprotection as Determined by Diphtheria Serum Antibody Levels (Defined as ≥ 0.1 IU/mL)
Maternal Blood
92.1 percentage of participants
Interval 78.6 to 98.3
100.0 percentage of participants
Interval 90.5 to
Cannot be estimated - value is already 100%
Percentage of Subjects With Seroprotection as Determined by Diphtheria Serum Antibody Levels (Defined as ≥ 0.1 IU/mL)
Cord Blood
94.7 percentage of participants
Interval 82.3 to 99.4
100.0 percentage of participants
Interval 89.1 to
Cannot be estimated - value is already 100%

PRIMARY outcome

Timeframe: 21 days post vaccination

Population: Safety Population - all subjects receiving the study intervention. Participants analyzed include those that provided data.

Measurement of serum antibody levels to tetanus toxoids, in maternal blood pre- and post-vaccination, maternal blood at delivery and infant cord blood obtained at delivery

Outcome measures

Outcome measures
Measure
Simultaneous Vaccination Arm
n=41 Participants
In the study arm,subjects will receive both Tdap and IIV vaccines during study visit 1. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Sequential Vaccination Arm
n=38 Participants
In this study arm, subjects will receive the IIV vaccine during study visit 1. Approximately 3 weeks later, they will receive the Tdap vaccine during study visit 4. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Percentage of Subjects With Seroprotection as Determined by Tetanus Serum Antibody Levels (Defined as ≥ 0.1 IU/mL)
Pre-Vaccination
82.5 percentage of participants
Interval 67.2 to 92.7
84.2 percentage of participants
Interval 68.7 to 94.0
Percentage of Subjects With Seroprotection as Determined by Tetanus Serum Antibody Levels (Defined as ≥ 0.1 IU/mL)
Post-Vaccination
97.6 percentage of participants
Interval 87.1 to 99.9
100 percentage of participants
Interval 90.5 to
Cannot be estimated - value is already 100%
Percentage of Subjects With Seroprotection as Determined by Tetanus Serum Antibody Levels (Defined as ≥ 0.1 IU/mL)
Maternal Blood
100.0 percentage of participants
Interval 90.7 to
Cannot be estimated - value is already 100%
97.3 percentage of participants
Interval 85.8 to 99.9
Percentage of Subjects With Seroprotection as Determined by Tetanus Serum Antibody Levels (Defined as ≥ 0.1 IU/mL)
Cord Blood
100.0 percentage of participants
Interval 90.7 to
Cannot be estimated - value is already 100%
100.0 percentage of participants
Interval 89.1 to
Cannot be estimated - value is already 100%

PRIMARY outcome

Timeframe: Pre and 21 days post vaccination and at Delivery

Population: Safety Population - subjects receiving the study intervention. Participants analyzed include those that provided data.

Measurement of serum antibody levels to influenza antigens in maternal blood and infant cord blood obtained at delivery

Outcome measures

Outcome measures
Measure
Simultaneous Vaccination Arm
n=41 Participants
In the study arm,subjects will receive both Tdap and IIV vaccines during study visit 1. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Sequential Vaccination Arm
n=38 Participants
In this study arm, subjects will receive the IIV vaccine during study visit 1. Approximately 3 weeks later, they will receive the Tdap vaccine during study visit 4. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Percentage of Subjects With Seroprotection as Determined by Influenza Serum Antibody Levels (≥1:40) (Pre- and Post-immunization) and Seroconversion (4-fold Rise From Baseline or a Change From <1:10 to ≥1:40) )
A/H1N1: Maternal Seroprotection
89.5 percentage of participants
Interval 75.2 to 97.1
94.6 percentage of participants
Interval 81.8 to 99.3
Percentage of Subjects With Seroprotection as Determined by Influenza Serum Antibody Levels (≥1:40) (Pre- and Post-immunization) and Seroconversion (4-fold Rise From Baseline or a Change From <1:10 to ≥1:40) )
A/H1N1: Cord Blood Seroprotection
97.4 percentage of participants
Interval 86.2 to 99.9
93.8 percentage of participants
Interval 79.2 to 99.2
Percentage of Subjects With Seroprotection as Determined by Influenza Serum Antibody Levels (≥1:40) (Pre- and Post-immunization) and Seroconversion (4-fold Rise From Baseline or a Change From <1:10 to ≥1:40) )
A/H3N2: Maternal Seroprotection
92.1 percentage of participants
Interval 78.6 to 98.3
94.6 percentage of participants
Interval 81.8 to 99.3
Percentage of Subjects With Seroprotection as Determined by Influenza Serum Antibody Levels (≥1:40) (Pre- and Post-immunization) and Seroconversion (4-fold Rise From Baseline or a Change From <1:10 to ≥1:40) )
A/H3N2: Cord Blood Seroprotection
100.0 percentage of participants
Interval 90.7 to
Cannot be estimated - value is already 100%
100.0 percentage of participants
Interval 89.1 to
Cannot be estimated - value is already 100%
Percentage of Subjects With Seroprotection as Determined by Influenza Serum Antibody Levels (≥1:40) (Pre- and Post-immunization) and Seroconversion (4-fold Rise From Baseline or a Change From <1:10 to ≥1:40) )
B/Brisbane: Maternal Seroprotection
42.1 percentage of participants
Interval 26.3 to 59.2
51.4 percentage of participants
Interval 34.4 to 68.1
Percentage of Subjects With Seroprotection as Determined by Influenza Serum Antibody Levels (≥1:40) (Pre- and Post-immunization) and Seroconversion (4-fold Rise From Baseline or a Change From <1:10 to ≥1:40) )
B/Brisbane: Cord Blood Seroprotection
76.3 percentage of participants
Interval 59.8 to 88.6
78.1 percentage of participants
Interval 60.0 to 90.7
Percentage of Subjects With Seroprotection as Determined by Influenza Serum Antibody Levels (≥1:40) (Pre- and Post-immunization) and Seroconversion (4-fold Rise From Baseline or a Change From <1:10 to ≥1:40) )
B/Phuket: Maternal Seroprotection
73.7 percentage of participants
Interval 56.9 to 86.6
67.6 percentage of participants
Interval 50.2 to 82.0
Percentage of Subjects With Seroprotection as Determined by Influenza Serum Antibody Levels (≥1:40) (Pre- and Post-immunization) and Seroconversion (4-fold Rise From Baseline or a Change From <1:10 to ≥1:40) )
B/Phuket: Cord Blood Seroprotection
81.6 percentage of participants
Interval 65.7 to 92.3
87.5 percentage of participants
Interval 71.0 to 96.5
Percentage of Subjects With Seroprotection as Determined by Influenza Serum Antibody Levels (≥1:40) (Pre- and Post-immunization) and Seroconversion (4-fold Rise From Baseline or a Change From <1:10 to ≥1:40) )
A/H1N1: Pre-Vaccination Seroprotection
58.5 percentage of participants
Interval 42.1 to 73.7
71.1 percentage of participants
Interval 54.1 to 84.6
Percentage of Subjects With Seroprotection as Determined by Influenza Serum Antibody Levels (≥1:40) (Pre- and Post-immunization) and Seroconversion (4-fold Rise From Baseline or a Change From <1:10 to ≥1:40) )
A/H1N1: Post-Vaccination Seroprotection
90.2 percentage of participants
Interval 76.9 to 97.3
94.7 percentage of participants
Interval 82.3 to 99.4
Percentage of Subjects With Seroprotection as Determined by Influenza Serum Antibody Levels (≥1:40) (Pre- and Post-immunization) and Seroconversion (4-fold Rise From Baseline or a Change From <1:10 to ≥1:40) )
A/H1N1: Seroconversion
39.0 percentage of participants
Interval 24.2 to 55.5
50.0 percentage of participants
Interval 33.4 to 66.6
Percentage of Subjects With Seroprotection as Determined by Influenza Serum Antibody Levels (≥1:40) (Pre- and Post-immunization) and Seroconversion (4-fold Rise From Baseline or a Change From <1:10 to ≥1:40) )
A/H3N2: Pre-Vaccination Seroprotection
53.7 percentage of participants
Interval 37.4 to 69.3
60.5 percentage of participants
Interval 43.4 to 76.0
Percentage of Subjects With Seroprotection as Determined by Influenza Serum Antibody Levels (≥1:40) (Pre- and Post-immunization) and Seroconversion (4-fold Rise From Baseline or a Change From <1:10 to ≥1:40) )
A/H3N2: Post-Vaccination Seroprotection
95.1 percentage of participants
Interval 83.5 to 99.4
92.1 percentage of participants
Interval 78.6 to 98.3
Percentage of Subjects With Seroprotection as Determined by Influenza Serum Antibody Levels (≥1:40) (Pre- and Post-immunization) and Seroconversion (4-fold Rise From Baseline or a Change From <1:10 to ≥1:40) )
A/H3N2: Seroconversion
63.4 percentage of participants
Interval 46.9 to 77.9
65.8 percentage of participants
Interval 48.6 to 80.4
Percentage of Subjects With Seroprotection as Determined by Influenza Serum Antibody Levels (≥1:40) (Pre- and Post-immunization) and Seroconversion (4-fold Rise From Baseline or a Change From <1:10 to ≥1:40) )
B/Brisbane: Pre-Vaccination Seroprotection
14.6 percentage of participants
Interval 5.6 to 29.2
13.2 percentage of participants
Interval 4.4 to 28.1
Percentage of Subjects With Seroprotection as Determined by Influenza Serum Antibody Levels (≥1:40) (Pre- and Post-immunization) and Seroconversion (4-fold Rise From Baseline or a Change From <1:10 to ≥1:40) )
B/Brisbane: Post-Vaccination Seroprotection
63.4 percentage of participants
Interval 46.9 to 77.9
63.2 percentage of participants
Interval 46.0 to 78.2
Percentage of Subjects With Seroprotection as Determined by Influenza Serum Antibody Levels (≥1:40) (Pre- and Post-immunization) and Seroconversion (4-fold Rise From Baseline or a Change From <1:10 to ≥1:40) )
B/Brisbane: Seroconversion
53.7 percentage of participants
Interval 37.4 to 69.3
50.0 percentage of participants
Interval 33.4 to 66.6
Percentage of Subjects With Seroprotection as Determined by Influenza Serum Antibody Levels (≥1:40) (Pre- and Post-immunization) and Seroconversion (4-fold Rise From Baseline or a Change From <1:10 to ≥1:40) )
B/Phuket: Pre-Vaccination Seroprotection
29.3 percentage of participants
Interval 16.1 to 45.5
47.4 percentage of participants
Interval 31.0 to 64.2
Percentage of Subjects With Seroprotection as Determined by Influenza Serum Antibody Levels (≥1:40) (Pre- and Post-immunization) and Seroconversion (4-fold Rise From Baseline or a Change From <1:10 to ≥1:40) )
B/Phuket: Post-Vaccination Seroprotection
78.0 percentage of participants
Interval 62.4 to 89.4
81.6 percentage of participants
Interval 65.7 to 92.3
Percentage of Subjects With Seroprotection as Determined by Influenza Serum Antibody Levels (≥1:40) (Pre- and Post-immunization) and Seroconversion (4-fold Rise From Baseline or a Change From <1:10 to ≥1:40) )
B/Phuket: Seroconversion
58.5 percentage of participants
Interval 42.1 to 73.7
42.1 percentage of participants
Interval 26.3 to 59.2

PRIMARY outcome

Timeframe: Approximately 1 year

Population: All subjects recruited and enrolled in the study

Percentage of subjects recruited during 4 month enrollment period

Outcome measures

Outcome measures
Measure
Simultaneous Vaccination Arm
n=81 Participants
In the study arm,subjects will receive both Tdap and IIV vaccines during study visit 1. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Sequential Vaccination Arm
In this study arm, subjects will receive the IIV vaccine during study visit 1. Approximately 3 weeks later, they will receive the Tdap vaccine during study visit 4. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Percentage of Subjects Recruited Enrollment Period
100.0 percentage of participants

PRIMARY outcome

Timeframe: Approximately 1 year

Population: Safety Population - subjects randomized and received study intervention

Percentage of participants that completed all in-person and delivery visits

Outcome measures

Outcome measures
Measure
Simultaneous Vaccination Arm
n=42 Participants
In the study arm,subjects will receive both Tdap and IIV vaccines during study visit 1. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Sequential Vaccination Arm
n=38 Participants
In this study arm, subjects will receive the IIV vaccine during study visit 1. Approximately 3 weeks later, they will receive the Tdap vaccine during study visit 4. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Feasibility as Measured by Participant Retention (Percentage of Participants Who Complete All Visits)
98.6 percentage of participants
97.7 percentage of participants

PRIMARY outcome

Timeframe: Approximately 1 year

Population: Safety Population - subjects randomized and received study intervention

Percentage of reactogenicity data days reported (days reported / total possible days)

Outcome measures

Outcome measures
Measure
Simultaneous Vaccination Arm
n=42 Participants
In the study arm,subjects will receive both Tdap and IIV vaccines during study visit 1. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Sequential Vaccination Arm
n=38 Participants
In this study arm, subjects will receive the IIV vaccine during study visit 1. Approximately 3 weeks later, they will receive the Tdap vaccine during study visit 4. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Feasibility Reported as Percentage of Reactogenicity Data Collected
92.6 percentage of days
93.1 percentage of days

PRIMARY outcome

Timeframe: Approximately 1 year

Population: Safety Population - subjects randomized and received study intervention

Percentage of samples collected (sample timepoints collected / total possible sample timepoints)

Outcome measures

Outcome measures
Measure
Simultaneous Vaccination Arm
n=42 Participants
In the study arm,subjects will receive both Tdap and IIV vaccines during study visit 1. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Sequential Vaccination Arm
n=38 Participants
In this study arm, subjects will receive the IIV vaccine during study visit 1. Approximately 3 weeks later, they will receive the Tdap vaccine during study visit 4. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Feasibility Reported as Percentage of Adequate Biospecimens Collected
94.0 percentage of samples
95.4 percentage of samples

PRIMARY outcome

Timeframe: Approximately 1 year

Population: Safety Population - subjects randomized and received study intervention

Timeliness is defined as collected within the visit window

Outcome measures

Outcome measures
Measure
Simultaneous Vaccination Arm
n=42 Participants
In the study arm,subjects will receive both Tdap and IIV vaccines during study visit 1. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Sequential Vaccination Arm
n=38 Participants
In this study arm, subjects will receive the IIV vaccine during study visit 1. Approximately 3 weeks later, they will receive the Tdap vaccine during study visit 4. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Feasibility Reported as Percentage of Timely Collected Biospecimens
94.0 percentage of samples
95.4 percentage of samples

SECONDARY outcome

Timeframe: Up to the 6-week postpartum visit

Population: Safety Population - subjects randomized and received study intervention

The number of participants with adverse maternal outcomes at delivery. Missing data is data not collected or unavailable.

Outcome measures

Outcome measures
Measure
Simultaneous Vaccination Arm
n=42 Participants
In the study arm,subjects will receive both Tdap and IIV vaccines during study visit 1. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Sequential Vaccination Arm
n=38 Participants
In this study arm, subjects will receive the IIV vaccine during study visit 1. Approximately 3 weeks later, they will receive the Tdap vaccine during study visit 4. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Number of Participants With Adverse Maternal Outcomes
Pre-term Birth (<37 weeks) · Yes
3 Participants
0 Participants
Number of Participants With Adverse Maternal Outcomes
Pre-term Birth (<37 weeks) · No
38 Participants
37 Participants
Number of Participants With Adverse Maternal Outcomes
Pre-term Birth (<37 weeks) · Missing
1 Participants
1 Participants
Number of Participants With Adverse Maternal Outcomes
Gestational Diabetes · Yes
6 Participants
3 Participants
Number of Participants With Adverse Maternal Outcomes
Gestational Diabetes · No
35 Participants
35 Participants
Number of Participants With Adverse Maternal Outcomes
Gestational Diabetes · Missing
1 Participants
0 Participants
Number of Participants With Adverse Maternal Outcomes
Gestational Hypertension · Yes
5 Participants
7 Participants
Number of Participants With Adverse Maternal Outcomes
Gestational Hypertension · No
36 Participants
31 Participants
Number of Participants With Adverse Maternal Outcomes
Gestational Hypertension · Missing
1 Participants
0 Participants
Number of Participants With Adverse Maternal Outcomes
Preeclampsia · Yes
3 Participants
1 Participants
Number of Participants With Adverse Maternal Outcomes
Preeclampsia · No
38 Participants
37 Participants
Number of Participants With Adverse Maternal Outcomes
Preeclampsia · Missing
1 Participants
0 Participants
Number of Participants With Adverse Maternal Outcomes
Severe Preeclampsia/HELLP · Yes
1 Participants
0 Participants
Number of Participants With Adverse Maternal Outcomes
Severe Preeclampsia/HELLP · No
40 Participants
38 Participants
Number of Participants With Adverse Maternal Outcomes
Severe Preeclampsia/HELLP · Missing
1 Participants
0 Participants

SECONDARY outcome

Timeframe: approximately 2 months

Population: Safety Population - subjects randomized and received study intervention

Number of participants with adverse infant outcomes. Missing data is data not collected or unavailable.

Outcome measures

Outcome measures
Measure
Simultaneous Vaccination Arm
n=42 Participants
In the study arm,subjects will receive both Tdap and IIV vaccines during study visit 1. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Sequential Vaccination Arm
n=38 Participants
In this study arm, subjects will receive the IIV vaccine during study visit 1. Approximately 3 weeks later, they will receive the Tdap vaccine during study visit 4. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Number of Participants With Adverse Infant Outcomes Based on Medical Record Review
Small Gestational Age (SGA): Olsen et al. · Yes
2 Participants
4 Participants
Number of Participants With Adverse Infant Outcomes Based on Medical Record Review
Small Gestational Age (SGA): Olsen et al. · No
40 Participants
34 Participants
Number of Participants With Adverse Infant Outcomes Based on Medical Record Review
Small Gestational Age (SGA): Olsen et al. · Missing
0 Participants
0 Participants
Number of Participants With Adverse Infant Outcomes Based on Medical Record Review
Neonatal Death · Yes
0 Participants
0 Participants
Number of Participants With Adverse Infant Outcomes Based on Medical Record Review
Neonatal Death · No
41 Participants
38 Participants
Number of Participants With Adverse Infant Outcomes Based on Medical Record Review
Neonatal Death · Missing
1 Participants
0 Participants
Number of Participants With Adverse Infant Outcomes Based on Medical Record Review
Hypoglycemia · Yes
0 Participants
1 Participants
Number of Participants With Adverse Infant Outcomes Based on Medical Record Review
Hypoglycemia · No
41 Participants
37 Participants
Number of Participants With Adverse Infant Outcomes Based on Medical Record Review
Hypoglycemia · Missing
1 Participants
0 Participants
Number of Participants With Adverse Infant Outcomes Based on Medical Record Review
Respiratory · Yes
0 Participants
1 Participants
Number of Participants With Adverse Infant Outcomes Based on Medical Record Review
Respiratory · No
41 Participants
37 Participants
Number of Participants With Adverse Infant Outcomes Based on Medical Record Review
Respiratory · Missing
1 Participants
0 Participants
Number of Participants With Adverse Infant Outcomes Based on Medical Record Review
Jaundice Requiring Phototherapy · Yes
1 Participants
1 Participants
Number of Participants With Adverse Infant Outcomes Based on Medical Record Review
Jaundice Requiring Phototherapy · No
40 Participants
37 Participants
Number of Participants With Adverse Infant Outcomes Based on Medical Record Review
Jaundice Requiring Phototherapy · Missing
1 Participants
0 Participants
Number of Participants With Adverse Infant Outcomes Based on Medical Record Review
Transient Tachypnea · Yes
1 Participants
0 Participants
Number of Participants With Adverse Infant Outcomes Based on Medical Record Review
Transient Tachypnea · No
40 Participants
38 Participants
Number of Participants With Adverse Infant Outcomes Based on Medical Record Review
Transient Tachypnea · Missing
1 Participants
0 Participants
Number of Participants With Adverse Infant Outcomes Based on Medical Record Review
Hematological · Yes
0 Participants
2 Participants
Number of Participants With Adverse Infant Outcomes Based on Medical Record Review
Hematological · No
41 Participants
36 Participants
Number of Participants With Adverse Infant Outcomes Based on Medical Record Review
Hematological · Missing
1 Participants
0 Participants
Number of Participants With Adverse Infant Outcomes Based on Medical Record Review
Sepsis/Rule out Infection · Yes
1 Participants
1 Participants
Number of Participants With Adverse Infant Outcomes Based on Medical Record Review
Sepsis/Rule out Infection · No
40 Participants
37 Participants
Number of Participants With Adverse Infant Outcomes Based on Medical Record Review
Sepsis/Rule out Infection · Missing
1 Participants
0 Participants
Number of Participants With Adverse Infant Outcomes Based on Medical Record Review
Low Birth Weight (< 2500 g) · Yes
3 Participants
2 Participants
Number of Participants With Adverse Infant Outcomes Based on Medical Record Review
Low Birth Weight (< 2500 g) · No
38 Participants
35 Participants
Number of Participants With Adverse Infant Outcomes Based on Medical Record Review
Low Birth Weight (< 2500 g) · Missing
1 Participants
1 Participants

SECONDARY outcome

Timeframe: at the time of delivery

Population: Safety Population - subjects randomized and receiving study intervention

Percentage of participants with clinical chorioamnionitis

Outcome measures

Outcome measures
Measure
Simultaneous Vaccination Arm
n=42 Participants
In the study arm,subjects will receive both Tdap and IIV vaccines during study visit 1. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Sequential Vaccination Arm
n=38 Participants
In this study arm, subjects will receive the IIV vaccine during study visit 1. Approximately 3 weeks later, they will receive the Tdap vaccine during study visit 4. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Percentage of Participants With Clinical Chorioamnionitis
0.0 percentage of participants
0.0 percentage of participants

SECONDARY outcome

Timeframe: after delivery, approximately up to 2 weeks

Population: Safety Population - subjects randomized and received study intervention

Percentage of participants with histologic chorioamnionitis on surgical pathology examination of placental tissue

Outcome measures

Outcome measures
Measure
Simultaneous Vaccination Arm
n=42 Participants
In the study arm,subjects will receive both Tdap and IIV vaccines during study visit 1. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Sequential Vaccination Arm
n=38 Participants
In this study arm, subjects will receive the IIV vaccine during study visit 1. Approximately 3 weeks later, they will receive the Tdap vaccine during study visit 4. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Percentage of Participants With Histologic Chorioamnionitis on Surgical Pathology Examination of Placental Tissue
19.0 percentage of participants
15.8 percentage of participants

SECONDARY outcome

Timeframe: Approximately 1 year

Population: Safety Population - subjects randomized and received study intervention

Percentage of blood samples received in testable condition (sufficient volume and quality)

Outcome measures

Outcome measures
Measure
Simultaneous Vaccination Arm
n=42 Participants
In the study arm,subjects will receive both Tdap and IIV vaccines during study visit 1. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Sequential Vaccination Arm
n=38 Participants
In this study arm, subjects will receive the IIV vaccine during study visit 1. Approximately 3 weeks later, they will receive the Tdap vaccine during study visit 4. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Feasibility as Measured by Percentage of Blood Samples in Testable Condition
100.0 percentage of samples
100.0 percentage of samples

SECONDARY outcome

Timeframe: Approximately 1 year

Population: Safety Population - subjects randomized and received study intervention

Percentage of blood samples received with sufficient volume for testing

Outcome measures

Outcome measures
Measure
Simultaneous Vaccination Arm
n=42 Participants
In the study arm,subjects will receive both Tdap and IIV vaccines during study visit 1. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Sequential Vaccination Arm
n=38 Participants
In this study arm, subjects will receive the IIV vaccine during study visit 1. Approximately 3 weeks later, they will receive the Tdap vaccine during study visit 4. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Feasibility as Measured by Percentage of Blood Samples in With Sufficient Volume for Testing
100.0 percentage of samples
100.0 percentage of samples

SECONDARY outcome

Timeframe: Approximately 1 year

Population: Safety Population - subjects randomized and received study intervention

Percentage of testable (sufficient volume and quality) blood samples completed

Outcome measures

Outcome measures
Measure
Simultaneous Vaccination Arm
n=42 Participants
In the study arm,subjects will receive both Tdap and IIV vaccines during study visit 1. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Sequential Vaccination Arm
n=38 Participants
In this study arm, subjects will receive the IIV vaccine during study visit 1. Approximately 3 weeks later, they will receive the Tdap vaccine during study visit 4. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Feasibility as Measured by Percentage of Testable Blood Samples Completed
100.0 percentage of samples
100.0 percentage of samples

Adverse Events

Simultaneous Vaccination Arm

Serious events: 1 serious events
Other events: 2 other events
Deaths: 0 deaths

Sequential Vaccination Arm

Serious events: 0 serious events
Other events: 2 other events
Deaths: 0 deaths

Serious adverse events

Serious adverse events
Measure
Simultaneous Vaccination Arm
n=42 participants at risk
In the study arm,subjects will receive both Tdap and IIV vaccines during study visit 1. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Sequential Vaccination Arm
n=38 participants at risk
In this study arm, subjects will receive the IIV vaccine during study visit 1. Approximately 3 weeks later, they will receive the Tdap vaccine during study visit 4. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Reproductive system and breast disorders
Uterine Rupture
2.4%
1/42 • Number of events 1 • Adverse events and SAEs are captured up to 8 days post vaccination. Subjects are followed for SAEs up to the 6-week postpartum visit. Significant infant complications or SAEs identified during the delivery visit will be followed up to the 2-month well child visit.
All-cause mortality, serious adverse events, and other AEs exceeding a frequency threshold of 5% were collected and reported.
0.00%
0/38 • Adverse events and SAEs are captured up to 8 days post vaccination. Subjects are followed for SAEs up to the 6-week postpartum visit. Significant infant complications or SAEs identified during the delivery visit will be followed up to the 2-month well child visit.
All-cause mortality, serious adverse events, and other AEs exceeding a frequency threshold of 5% were collected and reported.

Other adverse events

Other adverse events
Measure
Simultaneous Vaccination Arm
n=42 participants at risk
In the study arm,subjects will receive both Tdap and IIV vaccines during study visit 1. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Sequential Vaccination Arm
n=38 participants at risk
In this study arm, subjects will receive the IIV vaccine during study visit 1. Approximately 3 weeks later, they will receive the Tdap vaccine during study visit 4. Tetanus, Diphtheria, and Pertussis Vaccine 2016-2017 Quadrivalent Inactivated Influenza Vaccine 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Respiratory, thoracic and mediastinal disorders
Congestion
0.00%
0/42 • Adverse events and SAEs are captured up to 8 days post vaccination. Subjects are followed for SAEs up to the 6-week postpartum visit. Significant infant complications or SAEs identified during the delivery visit will be followed up to the 2-month well child visit.
All-cause mortality, serious adverse events, and other AEs exceeding a frequency threshold of 5% were collected and reported.
5.3%
2/38 • Number of events 2 • Adverse events and SAEs are captured up to 8 days post vaccination. Subjects are followed for SAEs up to the 6-week postpartum visit. Significant infant complications or SAEs identified during the delivery visit will be followed up to the 2-month well child visit.
All-cause mortality, serious adverse events, and other AEs exceeding a frequency threshold of 5% were collected and reported.
General disorders
Headaches
4.8%
2/42 • Number of events 2 • Adverse events and SAEs are captured up to 8 days post vaccination. Subjects are followed for SAEs up to the 6-week postpartum visit. Significant infant complications or SAEs identified during the delivery visit will be followed up to the 2-month well child visit.
All-cause mortality, serious adverse events, and other AEs exceeding a frequency threshold of 5% were collected and reported.
0.00%
0/38 • Adverse events and SAEs are captured up to 8 days post vaccination. Subjects are followed for SAEs up to the 6-week postpartum visit. Significant infant complications or SAEs identified during the delivery visit will be followed up to the 2-month well child visit.
All-cause mortality, serious adverse events, and other AEs exceeding a frequency threshold of 5% were collected and reported.

Additional Information

Dr. Geeta Swamy

Duke University

Phone: 919-681-5220

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place