This Season's Flu Vaccines Reduced Flu Medical Visits and Hospitalizations Across All Ages

Published on February 29, 2024

Interim flu vaccine effectiveness estimates show that so far during the 2023-2024 flu season, flu vaccines have worked, substantially reducing the risk of flu-related medical visits and hospitalizations across all age groups, with some estimates higher than have been previously observed, even during well-matched seasons.

Continue reading on website
Other news

Changes in flu circulation means U.S. likely to see vaccines move from quadrivalent to trivalent

February 29, 2024
U.S. flu vaccines are likely to move from quadrivalent to trivalent due to a change in circulating influenza viruses, according to a new paper.

Latest booster reduces adults' risk of moderate or severe COVID by more than half

March 1, 2024
The most recent COVID-19 booster shot reduces adults' risk of moderate or severe COVID by more than half, according to a new nationwide data study from September 2023 through January 2024, a period of JN.1 variant dominance. The new study is one of the first to evaluate protection provided by the updated shot against COVID-19-associated emergency department and urgent care visits (markers for mode