Cdc Flu Season 2024 2024. Influenza virus strains for a trivalent vaccine composition for use in the u.s. This letter sets out guidance for the 2024 to 2025 season and includes the next steps for regions and providers to take, including which flu vaccines to order.
Flu vaccines for the u.s. During the 2024 southern hemisphere flu season, most countries experienced similar levels of flu activity compared to trends observed in prior seasons (2017โ2019 and 2022โ2023 flu seasons).