COPCOV is a double-blind, randomised, placebo-controlled global study aiming to enrol 40,000 healthcare workers to determine if hydroxychloroquine and chloroquine can prevent COVID-19 that is led by the University of Oxford and the Wellcome supported Mahidol Oxford Tropical Medicine Research Unit (MORU) in Bangkok.
“There is no guarantee that we’ll soon have a widely available vaccine against COVID-19. Despite all the publicity, we still do not know if hydroxychloroquine can prevent COVID-19, but it’s really important that we find out, one way or the other. The only way to do this is to enrol a large number of participants in randomised controlled trials like COPCOV,” said Sir Jeremy Farrar, Director of the Wellcome Trust.
Previous prevention studies were too small to show conclusive evidence whether hydroxychloroquine works or not as a preventive.