President Trump said at a roundtable Monday that he's been taking the antimalarial drug hydroxychloroquine and a zinc supplement for "about a week and a half" as a preventative measure against the coronavirus. Why it matters: The FDA issued a warning last month that the unproven drug should only be taken in hospitals because of the risk of heart complications. There's no substantiated evidence that taking hydroxychloroquine prevents COVID-19 infections. The big picture: Rick Bright, the former head of a key government vaccine agency, testified last week that he believes he was ousted from his position because of ... (full story)