B/Yamagata

Estimating historical impacts of vaccination against influenza B/Yamagata in the United States to inform possible risks of re-emergence in the absence of vaccination

Influenza B/Yamagata viruses have not been detected globally since 2020 and will be removed from U.S. 2024/25 seasonal influenza vaccines. We inferred impacts of vaccination against B/Yamagata from 2016/17–2019/20 by combining B/Yamagata prevalence …