Pfizer’s COVID-19 Vaccine Less Effective in Children 5 to 11: Study

A 8 year-old child receives a dose of Pfizer's COVID-19 vaccine in Southfield, Mich., on Nov. 5, 2021. Jeff Kowalsky/AFP via Getty Images

Pfizer’s COVID-19 vaccine was not effective in preventing infection among children aged 5 to 11, according to a new study.

Researchers in New York also found indications that the vaccine effectiveness against severe disease plummeted.