Where coronavirus isn't: What's kept cases officially at zero in these 200 counties?
Limited testing may create undercounts, but isolation also seems to play a role in keeping the dwindling list of American places virus-free.
from USATODAY - News Top Stories https://ift.tt/2Tbvaa2
Limited testing may create undercounts, but isolation also seems to play a role in keeping the dwindling list of American places virus-free.
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