Ashish K. Jha, Dean of the School of Public Health at Brown University, was one of four expert witnesses at a Senate Homeland Security and Government Affairs Committee hearing focused on the early treatment of COVID-19 patients.

Jha said in a Twitter thread that the other three witnesses "strongly supported" hydroxychloroquine — a drug that was touted by President Donald Trump earlier in the pandemic. Since then a consensus has emerged in the scientific community that the drug, which is widely used to treat malaria, is not an effective therapy against COVID-1