Researchers say some coronavirus exposure may build immunity
Coronavirus (COVID-19) tally as compiled by Johns Hopkins University. (Previous numbers in parentheses.)
Total U.S. confirmed cases: 47,902,038 (47,773,956)
Total U.S. deaths: 772,588 (771,513)
Total global cases: 258,453,277 (257,896,250)
Total global deaths: 5,162,675 (5,155,288)
With the holidays looming, bringing with it increased travel and family gatherings, the number of new cases of the coronavirus in the U.S. has moved...