The flu itself generally isn't dangerous, but complications from the infection can be. That's why it's important for you and your child's doctor to determine whether your family needs the flu vaccine.

Although the flu season is from November to April, with most cases occurring between late December and early March, the vaccine is usually offered between September and mid-November (but may be given at other times of the year).

Getting the shot before the flu season is in full-force gives the body a chance to build up immunity to, or protection from, the virus. Although you can get a flu shot well into flu season, it's best to try to get it earlier rather than later, if your child's doctor thinks it's necessary.