Vaccines play an important role in keeping us all healthy. Vaccines save lives by protecting us from serious diseases, like measles and whooping cough, throughout life. So it's important to know the facts about vaccines, immunization, and vaccine-preventable diseases. Learn about how vaccines work and find reliable, easy-to-understand answers to common questions about vaccination.
Vaccine Basics
Get answers to common questions about how vaccines work, their safety, and what's in them.
Vaccines by Disease
Learn how vaccines protect you from serious diseases, why vaccines matter, who needs them, and possible side effects.
Vaccine Schedules
Find out which vaccines you and your family need and when to get them.
Get Vaccinated
Find out where to get vaccinated near you, what to expect at your visit, and how to pay for vaccines.
Get Email Updates
Sign up to receive email updates about immunizations and vaccines.