• Project status: Active
Brace BCOS team

BRACE COVID-19-Specific vaccine sub-study (BCOS)

With philanthropic support from the Bill & Melinda Gates Foundation, this is a sub-study to the Murdoch Children’s Research Institute’s trial of Bacille Calmette-Guérin (BCG) vaccine to reduce the impact of COVID-19. By recruiting existing BRACE trial participants for the sub-study, researchers are seeking answers to these key questions:

  • BCOS Australia and Brazil - Does BCG vaccination, by boosting the immune system, improve the response to Pfizer, AstraZeneca and CoronaVac?
  • BCOS Brazil - Is it possible to predict who remains susceptible to SARS-CoV-2 variants despite previous COVID-19 disease or COVID-19-specific vaccination?

With philanthropic support from the Bill & Melinda Gates Foundation, this is a sub-study to the Murdoch Children’s Research Institute’s trial of Bacille Calmette-Guérin (BCG) vaccine to reduce the impact of COVID-19. By recruiting existing BRACE...

With philanthropic support from the Bill & Melinda Gates Foundation, this is a sub-study to the Murdoch Children’s Research Institute’s trial of Bacille Calmette-Guérin (BCG) vaccine to reduce the impact of COVID-19. By recruiting existing BRACE trial participants for the sub-study, researchers are seeking answers to these key questions:

  • BCOS Australia and Brazil - Does BCG vaccination, by boosting the immune system, improve the response to Pfizer, AstraZeneca and CoronaVac?
  • BCOS Brazil - Is it possible to predict who remains susceptible to SARS-CoV-2 variants despite previous COVID-19 disease or COVID-19-specific vaccination?

About Australian sub-study participants

  • Are participants in the main BRACE trial
  • Are healthcare workers at the Royal Children’s Hospital, Melbourne, Epworth HealthCare, Women's and Children's Hospital, Adelaide or the Royal Adelaide Hospital
  • Had not had their COVID-19-specific vaccine at the time of enrolment
  • Have not previously been diagnosed with COVID-19 at the time of enrolment.

How it worked

BCOS participants attended one, two, or three vaccine sub-study clinic visits and provided a blood sample each time. The number of visits depended on the type of COVID-19-specific vaccine received. Where possible, we combined the visits with regular BRACE trial 3-monthly clinic visits.

Participants completed additional questionnaires a week after each vaccine sub-study clinic visit to tell us which COVID-19-specific vaccine they received and any reactions experienced. Participation in the sub-study ended 28 days after receiving the second dose of a COVID-19-specific vaccine.

Learn more about BCOS

The global race to understand Covid-19 variants. The University of Melbourne
Is it possible to predict who’s susceptible to SARS-CoV-2 variants – despite previous COVID-19 infection or vaccination?

ABC NewsRadio interview
Dr Nicole Messina, BRACE Biosample and Laboratory Lead speaks on ABC NewsRadio about the BRACE COVID-19-Specific vaccine sub-study.

Professor Nigel Curtis

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