Even as U.S. coronavirus deaths top 40,000 and a majority of Americans say they're worried about reopening the country too quickly, protests demanding a swift economic restart are spreading. But doing that safely depends on antibody tests to determine who might have some immunity, and those tests — which the Food and Drug Administration is allowing despite a lack of official vetting — can be extremely inaccurate. Experts also warn they're being dangerously misused.
What about treatment? Swiss pharma company Novartis has gotten approval for a trial of malaria drug hydroxychloroquine, the relatively untested drug President Donald Trump has touted as a potential cure.
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