Flu Vaccine Facts (cdc.gov)
• Flu viruses are constantly changing, so flu vaccines may be updated from one season to the next to protect against the viruses that research suggests will be common during the upcoming flu season.
• Your protection from a flu vaccine declines over time. Yearly vaccination is needed for the best protection.
By reducing the severity and impact of influenza, we hope to lessen the amount of preventable medical visits and hospitalizations.
Flu Season 2022-2023 Updates
CDC Director Adopts Preference for Specific Flu Vaccines for Seniors | CDC Online Newsroom | CDC
What’s New for 2022-2023
A few things are different for the 2022-2023 influenza (flu) season, including:
- The composition of flu vaccines has been updated.
- For people younger than 65 years, CDC does not recommend any one flu vaccine over another.
- For the 2022-2023 flu season, there are three flu vaccines that are preferentially recommended for people 65 years and older. These are Fluzone High-Dose Quadrivalent vaccine, Flublok Quadrivalent recombinant flu vaccine and Fluad Quadrivalent adjuvanted flu vaccine. If none of the three flu vaccines preferentially recommended for people 65 and older is available at the time of administration, people in this age group can get any other age-appropriate flu vaccine instead.
- The recommended timing of vaccination is similar to last season. For most people who need only one dose for the season, September and October are generally good times to get vaccinated. Vaccination in July and August is not recommended for most adults but can be considered for some groups. While ideally it’s recommended to get vaccinated by the end of October, it’s important to know that vaccination after October can still provide protection during the peak of flu season.
- The age indication for the cell culture-based inactivated flu vaccine, Flucelvax Quadrivalent (ccIIV4), changed from 2 years and older to 6 months and older.
- Pre-filled Afluria Quadrivalent flu shots for children are not expected to be available this season. However, children can receive this vaccine from a multidose vial at the recommended dose.
There are many vaccine options to choose from. The most important thing is for all people 6 months and older to get a flu vaccine every year.
People 65 years and older have an increased risk of severe flu illness, hospitalization, and death compared with younger populations. Use of potentially more effective vaccines for older people can avert serious outcomes. In recent years, CDC has not recommended any one flu vaccine over another for any age group, and there is still no preferential recommendation for people younger than 65. If you have questions about which vaccine is best for you, talk to your doctor or other health care professional.
- DO NOT wait for the flu to start spreading in the community before getting a flu vaccine.
- September and October are generally good times to be vaccinated and ideally, everyone (6 months and older) should be vaccinated before the end of October.
- Even if flu activity is low in your community it can begin increasing at any time.
- Once vaccinated it takes about two weeks to develop antibodies that protect against flu.
- While it is best to get vaccinated against flu by the end of October you can still get vaccinated against flu all the way into Spring 2023 to get protection.
Prevention and Control of Seasonal Influenza with Vaccines: Recommendations of the Advisory Committee on Immunization Practices — United States, 2022–23 Influenza Season | MMWR (cdc.gov)
Similarities and Difference between Flu and COVID-19
For both COVID-19 and flu, 1 or more days can pass between when a person becomes infected and when he or she starts to experience illness symptoms.
If a person has COVID-19, it could take them longer to experience symptoms than if they had flu.
Typically, a person experiences symptoms anywhere from 1 to 4 days after infection. Flu Symptoms
Typically, a person experiences symptoms about 5 days after being infected, but symptoms can appear 2 to 14 days after infection. COVID-19 Symptoms