Pfizer/BioNTech COVID vaccine less effective in ages 5-11 -New York study

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. The vaccine's efficacy against infection among those children declined to 12% at the end of January from 68% in mid-December compared to kids who did not get vaccinated, according the study, which has not yet been peer reviewed.