HomePfizer/BioNTech say booster dose increases protection vs Omicron in kids aged 5-11FILE PHOTO: Children age 5 and up receive vaccinations against

FILE PHOTO: Children age 5 and up receive vaccinations against

FILE PHOTO: A child is administered a dose of the Pfizer-BioNTech coronavirus disease (COVID-19) pediatric vaccine, in San Jose, Costa Rica February 23, 2022. REUTERS/Mayela Lopez
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