Study finds COVID-19 vaccine effectiveness against Omicron rapidly wanes over time
In a recent study published in the JAMA Network Open, researchers performed a systematic review and meta-analysis using secondary data from 40 published studies reporting time-varying, population-level coronavirus disease 2019 (COVID-19) vaccine effectiveness (VE) estimates against laboratory-confirmed infection by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants, Omicron or Delta, and symptomatic disease.