Flus complications can be so flu vaccien is a good idea for your family.

The flu season is from November to April, with most cases occurring between late December and early March, but the vaccine is usually offered between September and mid-November (and 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. However, even when there are only 2 or 3 months left in the flu season, it's still a good idea to get protection if the vaccine is available in your area

There's no guaranteed way — including being vaccinated — to prevent anyone from getting the flu. But precautions that can help protect you and your family include:
~avoiding large crowds whenever possible
~practicing good hand washing.
~never picking up used tissues
~never sharing cups and eating utensils
~staying home from work or school when someone is sick with the flu
~covering your mouth and nose with a tissue when you cough or sneeze