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Following WHO recommendations against the use of hydroxychloroquine in the prevention of COVID-19, including its use in controlled trials, we are reviewing the guideline and available evidence. We are concerned that this judgement from the authors of the guideline is scientifically unsound.

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Rise in COPCOV numbers continues; study to end recruitment 30 Nov

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.