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10 agosto 2020

Why the Pandemic Is So Bad in America

Why the Pandemic Is So Bad in America: Much about coronaviruses is still unknown. There are no surveillance networks for detecting them as there are for influenza. There are no approved treatments or vaccines. Coronaviruses were formerly a niche family, of mainly veterinary importance. Four decades ago, just 60 or so scientists attended the first international meeting on coronaviruses.