Medicine, Nursing and Allied Health Professions

BCG vaccination to reduce the impact of COVID-19 in healthcare workers (The BRACE Trial)



What is BRACE?

Please register for the BRACE trial here

Healthcare workers are at increased risk of contracting COVID-19, caused by SARS-CoV-2. Currently, there are no vaccines or proven preventative interventions available to protect healthcare workers so protection of healthcare workers relies on the use of personal protective equipment. When healthcare workers are sick and unable to come to work, this puts extra pressure on the healthcare system.

In the BRACE trial, we aim to recruit 10,000 healthcare workers who work in a healthcare setting or have face-to-face contact with patients in the UK, Australia, the Netherlands, Spain, and Brazil.

The results of this trial will help us find out whether, in current and future novel viral outbreaks, BCG vaccination could be used as an early intervention to protect healthcare workers and other high-risk groups. 

In the UK, the trial is a collaboration between Exeter Medical School’s Clinical Trials Unit and the Murdoch Children’s Research Institute (MCRI) in Melbourne, Australia.

Professor Nigel Curtis of MCRI is the lead researcher of the BRACE trial. MCRI has received funding from several generous donors, including the Bill & Melinda Gates Foundation. MCRI, with support from the Gates Foundation, and the Peter Sowerby Foundation have provided critical funding to enable the expansion of the BRACE trial into the UK.

Professor John Campbell, Professor of General Practice and Primary Care here in University of Exeter is the principal investigator in the UK for the BRACE trial, with Professor Adilia Warris, Professor in Paediatric Infectious Diseases, as deputy principal investigator. The study is being run by the Exeter Clinical Trials Unit working in collaboration with the Exeter NIHR funded Clinical Research Facility. We are recruiting community based healthcare workers, including primary care based healthcare workers and care home staff who are able to attend our three recruitment centres in Exeter (initially), and in due course with planned recruitment taking place in and around Keele.

Who can take part?

All healthcare workers who work in a health or social care setting or have face-to-face contact with patients are invited to check your eligibility to join the BRACE trial. Interested healthcare workers must be willing to attend recruitment and follow-up at a central recruitment site. 

Healthcare workers who have recently had, or are about to receive, the flu vaccination, need to leave at least 72 hours between the flu vaccination and attending the first BRACE research assessment visit.

Click here or click the register button at the top of this page to establish your eligibility, you'll then be given the comprehensive Participant Information Sheet (PIS) to read and a consent form to sign. We will also be collecting information about you and your role as a healthcare worker, which will remain strictly confidential within the BRACE trial team. 


Please register for the BRACE trial here. 

Why take part?

The Bacille Calmette-Guérin (BCG) vaccine is designed to protect against tuberculosis (TB). However it also boosts immunity to protect against other infections. We hope that the BCG vaccine will boost your immune system. It may provide you with non-specific protection against COVID-19 and other illnesses. (Note we cannot guarantee or promise you will receive any benefits from this trial.)

Information we collect in this trial will also help to inform how we respond to outbreaks of new viruses in the future.


 What does participation involve?

  • You will have initial, 3 month and 12 month blood test samples collected.
  • You will be randomly allocated to receive the BGG vaccine or be in the control group that will receive a placebo vaccine.
  • You need to download an app to easily record respiratory symptoms and fever.
  • Complete online surveys at 3, 6, 9, and 12 months.


Important Information, Risks and FAQs

  • The Murdoch Institute and The Unversity of Exeter have created a list of FAQs for participants which you can find here.
  • Occasionally some people experience adverse effects of the BCG vaccine. The majority of these are minor and local reactions around the injection site. These are outlined in detail in further information for you to read before taking part in the study.
  • Having a blood sample collected may cause some discomfort or bruising.  Having a throat swab can sometimes be uncomfortable but trained members of the research team will be collecting these samples.
  • As with all clinical trials, you may decide later not to participate, up to and including at your vaccination appointment.
  • We will not tell the healthcare provider where you work which of their staff members have consented to participate in this trial.
  • There are no costs associated with participating in this trial, nor will you be paid. All medication, tests and medical care required as part of the trial will be provided to you free of charge.

Professor John Campbell - introduction to BRACE trial

Professor Nigel Curtis: BCG Vaccine, COVID-19 and the BRACE Trial