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A global study examining the impact of chloroquine / hydroxychloroquine in preventing COVID-19, COPCOV has recruited 3,386 participants as of 26 Oct from sites in Benin, Côte d’Ivoire, Indonesia, Kenya, Mali, Nepal, Pakistan, Zambia, and closed sites in Thailand, Niger and the UK. Last week, the COPCOV team agreed with active site research teams that it will continue to recruit new participants until 30 Nov 2021, with preliminary study results expected Q1 2022.

"After a slow start COPCOV has become the world’s largest study of COVID-19 chemoprophylaxis. Recent recruitment has been extraordinary. It is a great tribute to the participants and all those who have worked so hard on this important study. Let’s hope it provides a definitive answer early next year!" said COPCOV Co-PI, Prof Sir Nick White.

- With thanks to Nick White, Will Schilling and John Bleho for text.

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Running continuously since Sept 2021, the PLATCOV trial has randomised over 1700 patients presenting with COVID19 infections. Work by PLATCOV’s Dr Phrutsamon Wongnak published in the Lancet Infectious Diseases has shown that rates of oropharyngeal viral clearance have accelerated dramatically since the trial started: A SARS CoV2 viral clearance half-life in untreated patients of around 16 hours In Sept 2021 had reduced to around 9 hours by Oct 2023. The results highlight the importance of pharmacometric platform trials like PLATCOV, so that we are prepared for the next pandemic.