Without A Vaccine, Researchers Say, Herd Immunity May Never Be Achieved
A growing number of researchers think until there's an effective vaccine, the coronavirus will simply persist in the population, causing illness indefinitely. Better to squelch the spread instead.
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Children's Health
July 24, 2020 at 04:00PM
Thứ Sáu, 24 tháng 7, 2020
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