Case-control study: In children 5 to 11 years of age, the Pfizer vaccine showed an effectiveness of 68% against hospitalization caused by the Omicron variant.

BNT162b2 Protection against the Omicron Variant in Children and Adolescents – New England Journal of Medicine

Commentary: COVID vaccination of children age 5-11 cut omicron hospitalizations by 68% – Children’s Hospital Boston

Related: [Preprint] Study shows significantly reduced effectiveness of the Pfizer vaccine in children 5 to 11 after the emergency of the Omicron variant.

Commentary on Twitter

BNT162b2 vaccination reduced the risk of omicron-associated hospitalization by two thirds among children 5 to 11 years of age. https://t.co/mQcchQqbtH pic.twitter.com/Qzy8qKg1wC

— NEJM (@NEJM) March 30, 2022