Effectiveness of BNT162b2 Vaccine against Omicron in Children 5 to 11 Years of Age

Abstract

BACKGROUND

Since it was first identified in early November 2021, the B.1.1.529 (omicron) variant of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has spread quickly and replaced the B.1.617.2 (delta) variant as the dominant variant in many countries. Data on the real-world effectiveness of vaccines against the omicron variant in children are lacking.

Matéria original