Clinical trialNCT04534803WithdrawnPhase 3Interventional

BCG Against Covid-19 for Prevention and Amelioration of Severity Trial (BAC to the PAST)

SponsorHarvard Medical School (HMS and HSDM)Enrollment0Covid19

View the registry record on ClinicalTrials.gov

Summary

The lay summary the sponsor registered on ClinicalTrials.gov.

The purpose of this study is to assess the efficacy of Bacille Calmette-Guérin (BCG) vaccination compared to placebo in reducing severe Covid-19 disease among elderly residents of skilled nursing facilities. The investigators hypothesize that BCG vaccination can reduce severity of Covid-19 disease. Patients who are residents of participating long-term care facilities (LTCFs), with the ability to understand and cooperate with study procedures, who agree to participate in the study will be randomly assigned to receive BCG vaccination or a placebo. Participants will be followed for up to twelve months to assess severity of Covid-19 outcomes.

clinicaltrials.gov ↗

Investigators

The overall officials registered on this study. Names that resolve to a findmyKOL profile link to it; the rest are shown as registered.

Megan B Murray, MD, ScD
Harvard Medical School (HMS and HSDM)
Principal InvestigatorKOL profile →
clinicaltrials.gov ↗

A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.

Sites

No facility list is in our current data snapshot for this study. The registry record on ClinicalTrials.gov ↗ carries any published locations. Why? →

Drugs studied

The drug and biological interventions registered on this study, normalized to their RxNorm ingredient where possible.

BACILLUS CALMETTE-GUERIN VACCINE

Linked drugs open the directory filtered to KOLs working with them.clinicaltrials.gov ↗

Registration & key dates

Registry attributes as recorded on the ClinicalTrials.gov study record.

Start: 30 Sept 2021
Primary completion: 31 May 2022
Completion: 31 Jul 2022
Last update posted: 28 Jun 2021
Registered enrollment: 0
Registry id: NCT04534803

clinicaltrials.gov ↗

Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 24 Aug 2026. Registry facts are shown as registered by the study sponsor; findmyKOL does not interpret them.