Welcome to the COBRA research study!



UHN researchers are recruiting participants for a study evaluating the
modified BCG vaccine for reducing risk and severity of COVID-19


Principal Investigator: Dr. Alexandre Zlotta

Who are we looking for?

  • Individuals whose professions place them at higher risk of contracting COVID-19
    • Members of police forces
    • Emergency medical services
    • Firefighters
    • Employees of public transport agencies
    • Health service workers
    • Food manufacturing employees

What is required?

  • In-person visit at one of the study sites in East, Central, or West GTA
    • Vaccination with modified BCG vaccine (VPM1002) or placebo
    • Collection of a blood sample (15 mL)
  • Biweekly completion of an online questionnaire (4 questions)
  • Second blood draw (another 15 mL) at 7 months

For more details, please see Additional Information, email COVIDBCGSTUDY@UHN.CA or call the COBRA HOTLINE at 416-946-4501 EXT. 7510