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Hydroxychloroquine could still prevent COVID-19 and save tens of thousands of lives around the world, say leading scientific researchers. While it doesn’t work in treatment of hospitalised patients, it could still prevent infections. However, fraudulent data, unjustified extrapolation and exaggerated safety concerns together with intense politicisation and negative publicity may stop COPCOV, the only large, global clinical trial testing hydroxychloroquine in COVID-19 prevention, from ever finding out.

Person using mobile app and screenshot of app interface © MORU 2020. Photographer: Supa-at (Ice) Asarath.
COPCOV participants will use a mobile app to report their health daily.
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Professor Sir Nicholas White obituary in The Times: brilliant clinical scientist

Professor Sir Nicholas White was a pioneering tropical medicine specialist whose work transformed malaria treatment worldwide, as written in The Times. He championed artemisinin-based combination therapies and intravenous artesunate, saving millions of lives. As head of MORU, he built influential research networks across Asia and Africa, publishing over 1,300 papers and shaping global policy. Knighted and widely honoured, he remained active in research until his death in 2026, aged 74.