Featured News Global study to test malaria drug to protect health workers from COVID-19 School of Medicine news release • May 18, 2020August 18, 2020 Clare Ridley, MD, works with colleagues during the pandemic. Worldwide, as many as 10 percent of those infected with the novel coronavirus are frontline health-care workers. Now researchers at Washington University School of Medicine in St. Louis are helming a worldwide study of up to 55,000 health-care workers to establish whether the antimalaria drugs chloroquine and hydroxychloroquine might prevent or reduce the severity of COVID-19 infections in such workers. ERIN JONES/BARNES-JEWISH HOSPITAL View Content Share this:TwitterLinkedInFacebookEmail