The flu is an illness that spreads easily and affects the nose, throat and lungs. It is most common in fall and winter, but you can get it at any time of year.

There are two main types of flu viruses in people: Type A and Type B. Both can cause seasonal flu illness. Most people feel better within a few days to 2 weeks. However, the flu can sometimes lead to serious illness, hospitalization or death.

Lowering the Risk of the Flu

The best way to prevent the flu is to get the flu vaccine every year.

• A healthcare professional gives the flu shot in your upper arm. Babies receive the shot in the upper leg.
• The flu vaccine cannot give you the flu because it does not contain a live flu virus.
• People age 6 months and older can get the flu vaccine.

Getting Vaccinated

You can get a flu vaccine at the following locations:

• Your primary care doctor’s office by appointment
• At Northwestern Medicine Immediate Care Centers 
  • You can walk in for a vaccine Tuesday through Saturday, 11 am to 2 pm (during flu season, generally September through March)
  • Patients must be age 3 years or older
• Pharmacies
  • Check with your local pharmacy for details, such as age restrictions