USA TODAY/By the end of July, about 9% of American adults had been exposed to the coronavirus that causes COVID-19, according to a new study of dialysis patients, the largest yet looking for evidence of the disease in people’s blood.

The infection rates varied from essentially zero in some states that avoided infection by mid-summer, to more than one-third of residents in parts of New York hard-hit in the spring.

The upshot is the American public is a long way from achieving “herd immunity” – having enough infections to prevent further spread of the virus.

More at USA Today





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