Vaccine Adverse Event Reporting System

The Vaccine Adverse Event Reporting System (VAERS) is a national vaccine safety surveillance program co-sponsored by the Centers for Disease Control and Prevention (CDC) and the Food and Drug Administration (FDA). VAERS is a post-marketing safety surveillance program, collecting information about adverse events (possible side effects) that occur after the administration of vaccines licensed for use in the United States.

VAERS provides a nationwide mechanism by which adverse events following immunization may be reported, analyzed, and made available to the public. VAERS also provides a vehicle for disseminating vaccine safety-related information to parents and guardians, health care providers, vaccine manufacturers, state vaccine programs, and other constituencies. more...

VIDEO: An Overview

of VAERS

This 10-minute video describes VAERS, who can report and how, and what happens after a VAERS report is submitted to CDC and the Food and Drug Administration (FDA).

VIDEO: Searching the

VAERS Database

VAERS data is available to the public. This video demonstrates how to use the VAERS search tool.

VAERS Data last updated: 03/14/2013

Featured Resources

Seasonal Flu Update

Summary of 2012-2013 Trivalent Influenza Vaccine Data

Government Agencies

Immunization Safety Office
National Center for Immunization and Respiratory Diseases
National Vaccine Injury Compensation Program
National Vaccine Program Office
Center for Biologics Evaluation and Research

Health Topics

Vaccine Safety
Immunization Schedules
Preventing Flu with Vaccination
Traveler's Health: Vaccinations
Vaccine-Preventable Diseases
CDC en Español: Inmunización

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Have you or your child had a reaction following vaccination?

Contact your health care provider
Report the reaction
Submit Follow-Up Information
Visit the National Vaccine Injury Compensation (if appropriate)

Important note: CDC and FDA do not provide individual medical treatment, advice, or diagnosis. If you need individual medical or health care advice, consult a qualified health care provider.

¿Ha tenido usted o su hijo una reacción adversa después de recibir una vacuna?

Contacte a su proveedor de salud
Reporte una reacción adversa
Visite el Programa Nacional de Compensación por Daños Derivados de Vacunas (si es necesario)

Search VAERS Data