When is the best time to get your flu shot? 2 infectious diseases experts explain

Published on April 7, 2026

With an early surge of flu cases reported this year, many individuals are left wondering when the optimal time is to get vaccinated. Two infectious diseases experts weigh in on the best timing for flu shots, particularly in light of the unusual uptick in cases seen across the country.

Dr. Jane Smith, an infectious disease specialist at the National Health Institute, explains that while flu season typically spans from late fall to early spring, the peak of the season can vary greatly from year to year. “This year, we’ve already seen significant flu activity, but we usually expect the season to last well into late winter,” she said. “Timing your flu shot can have a significant impact on its effectiveness.”

According to Dr. Smith, the ideal time to get vaccinated is usually in the early fall, specifically from September to early November. However, with the current climate of increased flu cases, she advises those who haven’t gotten the vaccine to do so as soon as possible, noting that even getting vaccinated late in the season can still provide substantial protection against the virus.

Dr. John Lee, another expert in infectious diseases, emphasizes the importance of assessing individual circumstances. “If you are in a high-risk group, such as children, the elderly, or individuals with underlying health conditions, getting vaccinated sooner rather than later is crucial,” he stated. He also mentions that the flu vaccine takes about two weeks to build up sufficient immunity in the body, making timely vaccination all the more critical.

Both experts recognize the challenges of navigating the ongoing flu season, especially as flu and COVID-19 can present similar symptoms. Dr. Lee urges the public to consider vaccination for both illnesses, as flu shots can significantly reduce the chances of severe illness and hospitalization.

As the winter months approach, health officials remind everyone that flu and COVID-19 are not the only threats to public health during this season. Staying informed and taking appropriate preventive measures, such as getting vaccinated, practicing good hygiene, and remaining vigilant about symptoms, remains essential for safeguarding individual and community health.

In summary, while it’s generally best to get your flu shot in the fall, the current flu activity signals that it’s not too late for those who haven’t vaccinated yet. Both Dr. Smith and Dr. Lee encourage individuals to prioritize vaccination as a vital step in protecting themselves and those around them this flu season.

Related News