Inside the NIH's controversial decision to stop its big remdesivir study

A rerncent federal study found that the Gilead Sciences' experimental drug, remdesivir, was the first treatment shown to have even a small effect against Covid-19. Behind that ray of hope, though, was one of the toughest quandaries in medicine: how to balance the need to rigorously test a new medicine for safety and effectiveness with the moral imperative to get patients a treatment that works as quickly as possible.