Leaders of a large study in the United Kingdom that is rigorously testing the malaria drug hydroxychloroquine and other medicines for hospitalized COVID-19 patients say they will stop putting people on the drug because its clear it isnt helping. Results released Friday from 1,542 patients showed the drug did not reduce deaths, time in the hospital or other factors. The results convincingly rule out any meaningful mortality benefit, study leaders at the University of Oxford said in a statement. The Oxford study is the largest study so far to put hydroxychloroquine to a strict test. The World Health Organization is leading a similar study testing hydroxychloroquine and several other therapies versus standard of care.