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Clinical Trial Summary

This study is open-label, two arms, multi-centered, phase 2b clinical trial to determine the efficacy, safety, and immunogenicity of booster vaccination (TURKOVAC) against Covid-19. The primary aim of the study is to evaluate the efficacy of a booster dose of TURKOVAC vaccine administered to subjects who have passed at least 90 days and at most 240 days after the second dose of the first course of Comirnaty (Code name: BNT162b2) vaccine.


Clinical Trial Description

This phase 2b study aims to determine the efficacy, safety, and immunogenicity of a booster dose of TURKOVAC vaccine administered to subjects who have passed at least 90 days and at most 240 days after the second dose of the first course of Comirnaty (Code name: BNT162b2) vaccine. Efficacy will be evaluated by spike-specific antibody response and neutralizing antibody levels on days 0, 28 (all subjects), 48, 84 and 168 days (50% of subjects). For the booster dose, subjects will be assigned open-label according to randomization (1:1) for 2 different arms. Comparing the efficacy, safety, and immunogenicity results of different series of TURKOVAC vaccines (TURKOVAC-Koçak and TURKOVAC-Dollvet) produced in different production facilities are the secondary objectives of the study. The booster dose vaccine arms are as follows: - TURKOVAC-Koçak - TURKOVAC-Dollvet ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05210179
Study type Interventional
Source Health Institutes of Turkey
Contact Bedia Dinç, Assoc. Prof.
Phone +90 (312) 552 60 00
Email [email protected]
Status Recruiting
Phase Phase 2
Start date January 24, 2022
Completion date January 24, 2023

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