from NBC News Top Stories https://ift.tt/3bbA7WL
Has the coronavirus mutated to be more contagious?
While small mutations in the virus's genetic code are evident, it's unclear what these changes mean for people, if anything at all.
from NBC News Top Stories https://ift.tt/3bbA7WL
from NBC News Top Stories https://ift.tt/3bbA7WL
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