Science News by Timothy Sumer - If people with no symptoms are spreading the coronavirus, as some studies suggest, it may be time to give face masks the kind of advertising and promotion that support condoms as lifesavers.
from NYT > Science https://ift.tt/2ytAyO8
via Timothy Sumer
from NYT > Science https://ift.tt/2ytAyO8
via Timothy Sumer
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