The Centers for Disease Control and Prevention is reminding people to get their flu shots.

Dec. 4-10 is National Influenza Vaccination Week. It’s peak flu season between December and March in the United States. The CDC recommends a yearly flu vaccine for everyone 6 months of age and older.

This season, it’s recommended to get a flu shot and not the nasal spray flu vaccine. It takes about two weeks after vaccination for antibodies to develop in the body and provide protection against the flu.

People at higher risk are pregnant women, children younger than 5, people 65 years of age and older, and those who have health conditions.