New studies clarify what drugs help, hurt in fight against Covid-19

Fresh studies give more information about what treatments do or don't work for Covid-19, with high-quality methods that give reliable results.

British researchers on Friday published their research on the only drug shown to improve survival -- a cheap steroid called dexamethasone.

Two other studies found that the malaria drug hydroxychloroquine does not help people with only mild symptoms.

For months before studies like these, learning what helps or harms has been undermined by desperation science as doctors and patients tried therapies on their own or through a host of studies not strong enough to give clear answers.

For the