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Thursday, 29 July 2021
What the CDC's 'substantial' and 'high' levels of Covid-19 transmission actually mean
Health guidance issued Tuesday recommends that fully vaccinated people wear masks indoors if they're in areas with "substantial" or "high" transmission of Covid-19. But what do "substantial" and "high" actually mean?
from CNN.com - RSS Channel - HP Hero https://ift.tt/3l8qDUv
from CNN.com - RSS Channel - HP Hero https://ift.tt/3l8qDUv
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