
The extra doses were most effective against infection and death among Americans aged 50 and older.
Published: January 21, 2022 at 05:00PM
from NYT Health https://ift.tt/3rKnSuC

The extra doses were most effective against infection and death among Americans aged 50 and older.
Published: January 21, 2022 at 05:00PM
from NYT Health https://ift.tt/3rKnSuC
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