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Bacterial Composition and Immune Responses in the Nose and Oropharynx During Influenza Infection

NCT02597647 · Status: COMPLETED · Phase: PHASE1 · Type: INTERVENTIONAL · Enrollment: 17

Last updated 2026-01-22

No results posted yet for this study

Summary

This study will serve to determine how influenza infection alters the bacterial colonization patterns in the nasal and oropharyngeal compartments, and whether the immune response correlate with these alterations. The investigators will be determining bacterial composition and immune responses in the nose and oropharynx during influenza infection.

Specific Aims

Therefore, the overall aims of this study are as follows:

1. To identify baseline composition and kinetic changes in the nasal and oropharyngeal microflora and immune responses after administering intranasal live attenuated influenza virus (i.e., FluMist® vaccine) or saline mist to healthy subjects;
2. To identify nasal and oropharyngeal microbial composition and local immune responses during influenza infections and after resolution of infection, and correlate these changes with clinical outcomes.

Conditions

Interventions

BIOLOGICAL

LAIV

Subjects underwent nasal swabs, nasopharyngeal saline wash, and nasal brushings pre, and 1-2 weeks and 4-6 weeks following intranasal administration of LAIV.

OTHER

Saline

Subjects underwent nasal swabs, nasopharyngeal saline wash, and nasal brushings pre, and 1-2 weeks and 4-6 weeks following intranasal administration of saline nasal spray.

Sponsors & Collaborators

Study Design

Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
64 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2011-02-28
Primary Completion
2014-04-30
Completion
2014-04-30

Countries

  • United States

Study Locations

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Entities

Diseases
Companies

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT02597647 on ClinicalTrials.gov