Need a PDF?
The flu (also known as influenza) is a contagious disease that can be mild to serious, even deadly. The best protection against flu? Get a flu shot every year. Many different flu viruses can spread through our communities, and they change all the time. That’s why flu shots are updated every year to protect you against the flu viruses that are likely to be most common.
Getting a flu shot has many benefits:
- You are less likely to get the flu
- If you do get the flu, you are less likely to get seriously sick or to be hospitalized
- The vaccine protects people around you from getting the flu
It is especially important to get a shot if you are at high risk for having serious flu-related problems:
- People aged 65 and older
- Nursing home residents
- People with serious health conditions such as heart disease, diabetes, asthma, lung disease, or HIV
It’s best to get your shot in September or October before flu season begins. If you did not get vaccinated in the fall, you can get vaccinated in the winter especially if it is before flu season peaks.
People who care for older adults should also get a flu shot every year.
- The updated 2026-2027 Fluzone High-Dose Trivalent, Fluad Trivalent or Flublok Trivalent flu vaccines are recommended over other influenza vaccines for persons 65 years or older.
- In August 2026, the FDA approved a new mRNA influenza vaccine (mFLUSIVA®) in persons 50 years and older because it provided better protection against influenza compared to standard dose influenza vaccine. The FDA grant accelerated approval to person 65 years and above with a post-marketing requirement to complete a clinical trial against high-dose influenza vaccine to confirm clinical benefit.
-
If none of these three vaccines are available at an opportunity for vaccine administration, then any other age-appropriate influenza vaccine should be used, below.
- Fluarix Trivalent
- FluLaval Trivalent
- Fluzone Trivalent
- Afluria Trivalent
- Flucelvax Trivalent
- Do not get a flu shot if you have had allergic reactions to flu shots in the past or were diagnosed with Guillian-Barre Syndrome within 6 weeks of having a previous flu shot.
- Medicare covers the cost of flu shots. Medicaid and private health insurance plans also cover costs.
Background
Flu is a serious disease—it is not the common cold. The flu can cause a fever, cough, sore throat, body aches, and fatigue that can last a week or longer.
Each year, flu causes 40,000 deaths and 200,000 hospitalizations in the US. Because our immune systems weaken with age, people aged 65 and older can have more serious flu-related illness than younger people. In recent flu seasons, about 70 to 90 percent of flu-related deaths occurred among older adults.
During seasons when flu vaccines closely “match” circulating flu viruses, flu vaccines can reduce your risk for needing to see a doctor for flu treatment.
Flu vaccination prevents millions of illnesses and flu-related doctor’s visits each year. For example, during 2019-2020, flu vaccination prevented about:
- 7.5 million cases of flu
- 3.7 million flu-associated medical visits
- 105,000 flu-associated hospitalizations
- 6,300 flu-associated deaths
Last Reviewed and Updated: September 2026
By: AGS/HiAF Public Education Committee, HealthinAging.org Content Reviewers
The AGS Older Adults Vaccine Initiative is supported by the Centers for Disease Control and Prevention (CDC) of the U.S. Department of Health and Human Services (HHS) as part of a financial assistance award to the Council of Medical Specialty Societies (CMSS), with 100 percent funded by CDC/HHS. In this initiative, AGS leverages existing resources and ongoing investments in content and technology.