Pfizer Shot Is Far Less Effective in 5- to 11-Year-Olds Than in Older Kids, New Data Show

The coronavirus vaccine made by Pfizer-BioNTech is much less effective in preventing infection in children ages 5 to 11 years than in older adolescents or adults, according to a large new set of data collected by health officials in New York. Deepta Bhattacharya, PhD, associate professor of medicine at the UArizona College of Medicine – Tucson, is quoted.