September 9, 2021
When is flu season and what is the best time to get the flu vaccine?
Influenza circulates year-round, but the peak season for flu is during the fall and winter months. Cases of flu may begin to increase as early as October, with the highest number occurring between December and February. In some years, flu activity can be seen as late as May.
Because the flu virus remains active year-round, it is possible to get the flu at any time during the year, but most cases occur during the months when flu is most active. We refer to this period from October through May as “fl...