Unknown PHASE2/PHASE3 INTERVENTIONAL 2-arm NCT04640233

Clinical Trial to Assess Safety and Immunogenicity of Gam-COVID-Vac Combined Vector Vaccine for Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-Сov-2) Infection

Randomized, Double-Blind, Placebo-Controlled, Parallel-Group, Phase II/III Adaptive Clinical Trial to Assess the Safety and Immunogenicity of Gam-COVID-Vac Combined Vector Vaccine for SARS-Сov-2 Infection in Indian Healthy Subjects

Sponsor: CRO: JSS Medical Research India Pvt. Ltd.

Conditions COVID-19 Prevention

Interventions Gam-COVID-Vac Placebo

Updated 8 times since 2020 Last updated: May 31, 2021 Started: Nov 30, 2020 Primary completion: Aug 31, 2021 Completion: Sep 30, 2021

This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

A PHASE2/PHASE3 clinical study on COVID-19 Prevention, this trial is ongoing. The trial is conducted by CRO: JSS Medical Research India Pvt. Ltd. and has accumulated 8 data snapshots since 2020. Infectious disease trials contribute critical data for public health response and treatment development.

Status Flow

Change History

8 versions recorded

Sep 2025 — Present [monthly]

Unknown PHASE2/PHASE3
Sep 2024 — Sep 2025 [monthly]

Unknown PHASE2/PHASE3
Jul 2024 — Sep 2024 [monthly]

Unknown PHASE2/PHASE3

Status: Unknown Status → Unknown · Phase: PHASE2_PHASE3 → PHASE2/PHASE3
Jun 2023 — Jul 2024 [monthly]

Unknown Status PHASE2_PHASE3

Status: Active Not Recruiting → Unknown Status
Sep 2021 — Jun 2023 [monthly]

Active Not Recruiting PHASE2_PHASE3

Status: Recruiting → Active Not Recruiting

▶ Show 3 earlier versions

Feb 2021 — Sep 2021 [monthly]

Recruiting PHASE2_PHASE3

Status: Not Yet Recruiting → Recruiting
Jan 2021 — Feb 2021 [monthly]

Not Yet Recruiting PHASE2_PHASE3
Dec 2020 — Jan 2021 [monthly]

Not Yet Recruiting PHASE2_PHASE3

First recorded

Nov 2020

Trial started

Per CT.gov start date — pre-dates our first snapshot

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:

CRO: JSS Medical Research India Pvt. Ltd.
Dr. Reddy's Laboratories Limited
Gamaleya Research Institute of Epidemiology and Microbiology, Health Ministry of the Russian Federation
Russian Direct Investment Fund

Data source: Dr. Reddy's Laboratories Limited

For direct contact, visit the study record on ClinicalTrials.gov .

Study Locations

Agra, India , Aurangabad, India , Belagavi, India , Delhi, India , Faridabad, India , Hyderabad, India , Jaipur, India , Kanpur, India , Kolkata, India , Lucknow, India and 8 more locations