Experts puzzled by dramatic fall in coronavirus cases in India
Experts say herd immunity or pre-existing protection from the virus are among several reasons for sudden drop in cases.
from Al Jazeera – Breaking News, World News and Video from Al Jazeera https://ift.tt/3duIT75
from Al Jazeera – Breaking News, World News and Video from Al Jazeera https://ift.tt/3duIT75
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