Test-negative, case-control study: Association of prior BNT162b2 COVID-19 vaccination with symptomatic SARS-CoV-2 infection in children and adolescents during Omicron predominance.

Association of Prior BNT162b2 COVID-19 Vaccination With Symptomatic SARS-CoV-2 Infection in Children and Adolescents During Omicron Predominance – JAMA

Related study: Risk of Infection and Hospitalization Among Vaccinated and Unvaccinated Children and Adolescents in New York After the Emergence of the Omicron Variant – JAMA

Editorial: Protecting Children Against Omicron – JAMA

Commentary on Twitter (thread – click for more)

This new JAMA study is worth discussing. It found that, this winter, vax effectiveness in 12-15 yos dropped to 0% after 3-5 months & vaccinated were MORE likely to test+ at month 7. May be confounded (see?)
But I don't see this as good reason for boostershttps://t.co/zpkIDdZhnn pic.twitter.com/bxAIDmiR8s

— Tracy Høeg, MD, PhD (@TracyBethHoeg) May 14, 2022