Everyone 6 months & older should receive an annual flu vaccine. Flu can cause mild to severe illness.
When should I get vaccinated?
You should get a flu vaccine before flu viruses begin spreading in your community, since it takes about two weeks after vaccination for antibodies to develop in the body and provide protection against flu. Make plans to get vaccinated early in fall, before flu season begins. CDC recommends that people get a flu vaccine by the end of October.
Learn more at https://www.cdc.gov/flu and https://www.cdc.gov/flu/prevent/vaccinations.htm#when