Flu shot timing: When to get vaccinated for optimal protection

As flu season approaches, the CDC recommends that most individuals receive their flu shot in September or October, ideally by the end of October for optimal protection. Vaccination is crucial as it takes about two weeks for antibodies to develop after receiving the vaccine. Special considerations are advised for certain groups, such as those over 65 and pregnant women, who should not be vaccinated earlier than September to ensure lasting protection. Children aged 6 months to 8 years may require two doses of the vaccine, particularly if they are first-time recipients or have an unclear vaccination history. For these children, the first dose should be administered as soon as available, with a minimum of four weeks between doses. Early vaccinations can also be beneficial for pregnant women in their third trimester to help protect their newborns. Dr. Marc Siegel emphasizes that the flu shot is effective for six to nine months, with flu season typically peaking in January or February. This timing underscores the importance of getting vaccinated in the fall to ensure adequate immunity during peak flu activity. Walgreens and other health experts echo the CDC's guidance, stating that vaccination should continue throughout the flu season as long as the virus is circulating. This proactive approach is essential for safeguarding public health, especially as children return to school and families gather during the holiday season.