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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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