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Safety and Immunogenicity Study of Inactivated Vaccine for Prevention of SARS-CoV-2 Infection(COVID-19)

NCT04383574 · Status: COMPLETED · Phase: PHASE1/PHASE2 · Type: INTERVENTIONAL · Enrollment: 422

Last updated 2022-08-11

No results posted yet for this study

Summary

This study is a randomized, double-blinded, and placebo controlled phase 1\&2 clinical trial of the SARS-CoV-2 inactivated vaccine manufactured by Sinovac Life Sciences Co. , Ltd. The purpose of this study is to evaluate the safety and immunogenicity of the experimental vaccine in healthy elderly aged 60 years and above.

Conditions

Interventions

BIOLOGICAL

Two doses of medium dosage inactivated SARS-CoV-2 vaccine at the schedule of day 0,28

The inactivated SARS-CoV-2 vaccine was manufactured by Sinovac Research \& Development Co., Ltd..Two doses of medium dosage (600SU/0.5ml) experimental vaccine at the schedule of day 0,28,and one dose of booster immunization(the third dose) with medium dosage (600SU/0.5ml) experimental vaccine 1 year after primary immunization at the schedule of day 0,28 in phaseⅠand 6 months after primary immunization at the schedule of day 0,28 in phase Ⅱ.And the second booster dose (the fourth dose) 1 year after the second dose.

BIOLOGICAL

Two doses of high dosage inactivated SARS-CoV-2 vaccine at the schedule of day 0,28

The inactivated SARS-CoV-2 vaccine was manufactured by Sinovac Research \& Development Co., Ltd..Two doses of high dosage (1200SU/0.5ml) experimental vaccine at the schedule of day 0,28,and one dose of booster immunization(the third dose) with medium dosage (1200SU/0.5ml) experimental vaccine 1 year after primary immunization at the schedule of day 0,28 in phaseⅠand 6 months after primary immunization at the schedule of day 0,28 in phase Ⅱ.And the second booster dose (the fourth dose) 1 year after the second dose.

BIOLOGICAL

Two doses of placebo at the schedule of day 0,28

The placebo was manufactured by Sinovac Research \& Development Co., Ltd., Two doses of placebo at the schedule of day 0,28,and one dose of booster immunization with placebo 1 year after primary immunization at the schedule of day 0,28 in phaseⅠand 6 months after primary immunization at the schedule of day 0,28 in phase Ⅱ.

BIOLOGICAL

Two doses of low dosage inactivated SARS-CoV-2 vaccine at the schedule of day 0,28

The inactivated SARS-CoV-2 vaccine was manufactured by Sinovac Research \& Development Co., Ltd..Two doses of low dosage (300SU/0.5ml)experimental vaccine at the schedule of day 0,28,and one dose of booster immunization with low dosage (300SU/0.5ml) experimental vaccine 6 months after primary immunization at the schedule of day 0,28 in phase Ⅱ.

Sponsors & Collaborators

  • Sinovac Life Sciences Co., Ltd.

    lead INDUSTRY

Principal Investigators

  • Yuliang Zhao, Master · Hubei Provincial Center for Disease Control and Prevention

Study Design

Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
60 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2020-05-22
Primary Completion
2021-12-28
Completion
2022-05-31

Countries

  • China

Study Locations

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Entities

Diseases

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 NCT04383574 on ClinicalTrials.gov