Pfizer COVID-19 vaccine less effective in ages 5-11: study
March 01, 2022 at 08:28 AM EST
Two doses of the Pfizer Inc. and BioNTech SE COVID-19 vaccine was protective against severe disease in children aged 5 to 11 during the recent omicron variant surge, but quickly lost most of its ability to prevent infection in the age group, according to a study by New York State researchers.