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Flu Shot Season Arrives: Experts Advise Timing for Maximum Protection
28 Sep, 2025
Summary
- CDC recommends getting flu shot by end of October
- Early vaccination advised for certain groups like pregnant women and children
- Flu shot provides protection for 6-9 months

With flu season right around the corner, health authorities are urging the public to get their flu shots as soon as possible. According to the Centers for Disease Control and Prevention (CDC), the ideal time to get vaccinated is by the end of October.
For most people, September and October are the best months to receive the flu shot, as it takes about two weeks for antibodies to develop and provide protection. However, the CDC advises certain high-risk groups, such as those over 65 and pregnant women, to avoid getting vaccinated earlier than September, as the protection may decrease over time.
The agency also notes that children aged 6 months to 8 years who are getting the flu shot for the first time, or those with an unknown vaccination history, will need two doses administered at least four weeks apart. Early vaccination in July and August is recommended for these children, as well as for pregnant women in their third trimester.
Flu shots are available for anyone 6 months and older, with options ranging from injectable vaccines to nasal sprays. Experts emphasize that while the ideal time to get vaccinated is in the next month or two, it's important to continue seeking the shot throughout the flu season, which typically peaks in January or February.