Fears that the Covid booster shots made by Pfizer-BioNTech may increase the risk of strokes in people aged 65 and older were not borne out by an intensive scientific investigation, federal officials said on Friday.It is very unlikely that the risk is real, the officials said.They urged Americans 6 months and older to continue getting booster shots.
#people #information #united-states #coronavirus #investigation #collaboration #disease-control #observations #million-doses
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