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As summer winds down and families settle back into school, work, and everyday fall routines, flu season may not feel like an immediate concern. Still, September is often when questions about annual flu vaccination start coming up. Should you get vaccinated now? Is October better? What happens if you wait until November?

For most people, the answer is fairly simple. September and October are generally the best months to get a flu vaccine, with vaccination ideally completed by the end of October. It takes about two weeks after vaccination for your body to develop antibodies that will help protect you against influenza, so planning ahead of time can help you enter flu season with protection already in place. Current CDC guidance continues to recommend this September-to-October window for most people who need one dose.

If you are wondering when to get a flu shot in 2026, there are a few exceptions worth knowing. Children who need two doses, people who are pregnant, and adults 65 and older may have different timing considerations. Understanding those differences can help to make flu vaccine timing much easier to plan.

When Is the Best Time to Get a Flu Shot?

For most adults and children who need only one dose, September and October are the preferred months for seasonal flu vaccination. Ideally, vaccination should be completed by the end of October.

Considering the timing is important because vaccine protection can gradually decrease over time. Getting vaccinated months before flu activity increases may mean having less protection later in the season, especially for adults who are older.

For the 2026–27 flu season, there is another reason to stay current: all three virus components in U.S. seasonal flu vaccines were updated from the previous season. Flu vaccines are reviewed and updated regularly because the influenza viruses circulating from year to year can change.

Is August Too Early for a Flu Shot?

For many adults, July and August are earlier than recommended if they will have another opportunity to be vaccinated in September or October.

This is especially important for adults 65 and older because vaccine protection may decrease over time. However, getting vaccinated earlier can still make sense if returning later is unlikely.

There are also exceptions for children and pregnancy.

Is November Too Late to Get a Flu Shot?

No. October is an ideal target, not an expiration date.

If November, December, or even later arrives and you have not received your flu vaccine, vaccination can still be worthwhile while influenza viruses continue circulating.

Flu season can extend well beyond the beginning of winter, so missing the preferred September-to-October window does not mean you should skip vaccination for the year.

When Should Children Get Their Flu Shot?

Most children 6 months and older should receive a flu vaccine every year, but some children between 6 months and 8 years old need two doses during the same flu season, depending on their previous vaccination history.

When two doses are needed, they must be given at least four weeks apart. Those children should receive their first dose as soon as the seasonal vaccine becomes available—even if that is in July or August—so there is enough time to complete the series.

If you are unsure whether your child needs one or two doses this season, bring their vaccination history to the appointment so your healthcare provider can review it.

When Should Pregnant Patients Get a Flu Shot?

Flu vaccination is recommended during pregnancy, but timing can vary depending on the trimester.

For people in the first or second trimester, September or October is generally preferred when possible. Vaccination during July or August may be considered during the third trimester, because antibodies developed after vaccination can also help protect the baby during the first months after birth, when infants are too young to receive their own flu vaccine.

When Should Adults 65 and Older Get Vaccinated?

Adults 65 and older should generally aim for September or October and avoid vaccination in July or August when they can reasonably return later.

This age group also has additional vaccine options. The CDC preferentially recommends certain higher-dose or adjuvanted flu vaccines for adults 65 and older. Your healthcare provider can help determine which age-appropriate option is available and appropriate for you.

Who Should Get a Flu Shot?

For the 2026–27 season, annual influenza vaccination is recommended for nearly everyone 6 months of age and older, with limited exceptions.

That includes children, adults, people who are pregnant, and many people living with chronic medical conditions.

While influenza can affect anyone, vaccination is especially important for people who have a greater risk of developing serious complications from the flu. These include:

●     Children younger than 5, particularly those younger than 2

●     Adults 65 and older

●     People who are pregnant

●     People with asthma or other chronic lung conditions

●     People with diabetes

●     People with heart disease

●     People with weakened immune systems

●     People with certain other chronic medical conditions

People who regularly spend time with someone at higher risk also have an important role to play. Parents, caregivers, healthcare workers, and household members can help reduce the chance of bringing influenza home to someone who may be more vulnerable.

That is particularly important around infants. Children younger than 6 months cannot receive a flu vaccine, so vaccination among parents, caregivers, and household members can provide another layer of protection around them.

There are also situations where it makes sense to talk with your healthcare provider before vaccination. Flu vaccines are approved for different ages, and your medical history may affect which vaccine is appropriate. If you previously had a severe allergic reaction to a flu vaccine or one of its ingredients, discuss that history with your provider before receiving another dose.

The California Department of Public Health also issued updated respiratory-virus immunization guidance for the 2026–27 season in September 2026, making it especially worthwhile for California families to review the latest recommendations as fall begins.

Flu Shots in Covina and West Covina

Finding time for vaccination does not need to make an already busy fall schedule more complicated. For many individuals and families, an annual flu shot can fit into routine medical care before influenza activity increases.

If you are looking for a flu shot in Covina, September and October are good months to speak with your healthcare provider about your vaccination needs. Families may also find it convenient to coordinate flu vaccination with other routine appointments, especially when several members of the household need their annual vaccine.

If you are searching for a flu shot near you in West Covina, you may also have questions about which flu vaccine is right for you. There are several types available, and the appropriate choice can depend on your age, pregnancy status, medical history, and other factors. You do not need to sort through those options on your own; a healthcare provider can review your needs and recommend an appropriate vaccine.

A little preparation can also help make the appointment simple. Consider bringing:

●     Your insurance information and photo identification

●     Your vaccination record, if available

●     A list of medications you currently take

●     Information about significant allergies or previous vaccine reactions

●     Any questions you have about your vaccine schedule

At Mayflower Medical Group, our providers care for individuals and families across Anaheim, Covina, La Puente, El Monte, and West Covina. Our Flu Prevention services can help you prepare for flu season with guidance based on your age, health history, vaccination history, and individual needs.

For most people, remembering when to get vaccinated can be as simple as thinking about September and October. Ideally, receive your flu vaccine by the end of October, but do not assume you have missed your opportunity if the calendar moves into November or winter. Children who need two doses may need to begin earlier, while pregnancy, age, and medical history can also affect the best timing.

Flu season returns every year, but preparing for it does not have to be complicated. Whether you have questions about seasonal vaccination, need help reviewing your child’s vaccine schedule, or are ready for your annual flu shot, Mayflower Medical Group is here to help. [Learn More About Flu Prevention] | [Book an Appointment]

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