When Does Flu Season Start 2024. 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. If you get it too early, say in july or august, you “might run out of immunity by the.
Traditionally, flu season has run from april to october with a peak in august. In general, flu season in the us lasts from october to as late as may, peaking between december and february.
