Vaccine Safety | Vaccine Safety

Vaccine Adverse Events Reporting System (VAERS)

New website and ways to report online

Back to School: Vaccines for Preteens

Learn about the safety of Tdap, Meningococcal, and HPV vaccines

Human Papillomavirus (HPV) Vaccine is Very Safe

Read about the safety of quadrivalent HPV vaccine (Gardasil)

The United States’ long-standing vaccine safety program closely and constantly monitors the safety of vaccines.

A critical part of the program, CDC’s Immunization Safety Office identifies possible vaccine side effects and conducts studies to determine whether health problems are caused by vaccines.

Data show that the current U.S. vaccine supply is the safest in history.

Safety Information About Specific Vaccines

See in-depth information about the safety of each FDA-approved vaccine in the U.S.

Ensuring Vaccine Safety

Learn how CDC works to ensure the safety of vaccines in the U.S.

Common Vaccine Safety Concerns

Get answers to commonly asked questions about vaccine safety.

Vaccine Safety Research

Read vaccine safety reports and published research.

Information for Parents and Caregivers

Information for Healthcare Providers