Vaccines are substances that prevent or lessen diseases by teaching your body's immune system how to defend against them. There are a wide variety of vaccines available that protect against serious or possibly fatal infections. You'll receive vaccinations from birth, through your 20s, 30s, 40s, and beyond to help your body stay healthy.

Explore Vaccines

Mature man looking at female healthcare worker injecting medicine
New Omicron Booster Side Effects: What to Expect From the Bivalent Vaccines
Doctor cleans a smiling woman's arm before giving her a shot
You May Be Better Protected if You Space Out Your COVID and Flu Shots—Here's Why
African-American man getting covid vaccine close-up
Annual COVID Vaccine: U.S. Tries 'New Approach' With Omicron Boosters