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It’s too soon to declare herd immunity against COVID-19. My blood helps explain why.

Inquirer reporter Tom Avril was among more than 11,000 volunteers chosen for an NIH antibody study.

Inquirer staff writer Tom Avril dripped his blood onto four swabs and sent them to a National Institutes of Health lab, which tested for antibodies to the coronavirus. The study estimated how many people were exposed but developed no symptoms.
Inquirer staff writer Tom Avril dripped his blood onto four swabs and sent them to a National Institutes of Health lab, which tested for antibodies to the coronavirus. The study estimated how many people were exposed but developed no symptoms.Read moreCHARLOTTE AVRIL
    by Tom Avril
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