COVID Vaccine Protects Kids and Teens from Severe Infection

Pfizer-BioNTech vaccine effectiveness was evaluated in a new study during the Delta and Omicron periods in children aged 5-18 years.

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,Pfizer ,New England Journal ,Covid 19 ,Vaccine ,Delta Variant ,Omicron Variant ,Pfizer Biontech Mrna Vaccine ,Critical Illness ,