Worrisome. After 44%-66% of people in Manaus #Brazil got the #coronavirus in May-August, the death toll plummeted, likely due to herd immunity.
Deaths are now rising.
Antibodies waned after just a few months, potentially explaining the resurgence.https://www.reuters.com/article/us-health-coronavirus-brazil-manaus-idCAKBN26I0I4 …
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