Existing Drugs May Work Against Covid-19. AI Is Screening Thousands to Find Out

You've heard of chloroquine by now. Originally developed by German scientists in the 1930s, the anti-malaria drug is based on a natural compound present in the bark of certain South African trees. For nearly a century it's been saving lives globally, but remained under the radar of countries where malaria isn't a big problem. Thanks to Covid-19, chloroquine is back in the media spotlight as a potential treatment to reduce severe coronavirus symptoms. To be clear: we don't know if it works.