About 9% of Americans exposed to COVID-19 by mid-summer. That's a long way from herd immunity. https://ift.tt/2GehkQQ Karen Weintraub, USA TODAY

A new study of dialysis patients shows the American public is a long way from achieving 'herd immunity' and protection from COVID-19 community spread.

      

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September 26, 2020 at 05:20AM