The Basics: Flu Vaccines
How is the flu vaccine given?
You can get the flu vaccine as a shot or as a nasal spray.
The best way to protect yourself and others around you is to get a flu vaccine every year.
Are there any side effects from seasonal flu vaccines?
For many people, getting a flu vaccine doesn’t cause any side effects. If it does cause side effects, they're usually mild and begin soon after you get the vaccine. Side effects from flu vaccines usually last 1 to 2 days.
Side effects from the flu shot may include:
- Soreness, redness, or swelling where the shot was given
- Low fever
Side effects from the nasal spray vaccine may include:
- Runny nose
These side effects aren’t the flu. You can’t get the flu from flu vaccines.