The first case of COVID-19 wasn't confirmed until March — but plasma samples from February suggest the virus may have circulated before that.
from Yahoo News - Latest News & Headlines https://ift.tt/2HW6oZj
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The first case of COVID-19 wasn't confirmed until March — but plasma samples from February suggest the virus may have circulated before that.
from Yahoo News - Latest News & Headlines https://ift.tt/2HW6oZj
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