Wintertime is flu season, and getting your influenza vaccine (flu shot) in the fall is the best way to prevent the flu and its complications. It can take nearly two weeks to build immunity after a shot.
The Centers for Disease Control and Prevention (CDC), cdc.gov, recommends an annual flu shot for everyone age 6 months and older. It can lower your risk of having serious illness from the flu and the need for a hospital stay. You can still protect yourself against late flu outbreaks even if you get the flu shot in February or later in the season.
Talk to your health care provider if you have questions about getting the flu shot or visit your local public health office for more information.