Why the U.S. Is Underestimating Covid Reinfection
Hundreds of Americans suspect they contracted covid early in the pandemic and recovered, only to get infected again months later. But because the U.S. does so little genetic sequencing of covid samples, we don’t know much about reinfection rates.
http://dlvr.it/RsFWr6
http://dlvr.it/RsFWr6
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