What if ‘herd immunity’ is closer than scientists thought? – Chicago Tribune

A second wave might also hit groups or neighborhoods that were spared by the first, and still wreak havoc, she said. Immunity is a patchwork quilt in New York, for instance: Antibodies were present in 68% of people visiting a clinic in the Corona neighborhood of Queens, for instance, but in just 13% of those tested at a clinic in the Cobble Hill section of Brooklyn.

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