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Vaccine Safety
man receiving vaccine in arm


Vaccine facts

The United States currently has the safest, most effective vaccine supply in history. By law the US Food and Drug Administration (FDA) requires years of testing before a vaccine can be licensed. Once a vaccine is in use, the US Centers for Disease Control and Prevention and the FDA monitor vaccine safety, efficacy, and side effects through the Vaccine Adverse Event Reporting System (VAERS). For more information visit the VAERS website or or call the information line at: 1-800-822-7967.



What should be done if you have a reaction to a vaccine

  • Call your doctor. If you are having a severe reaction get to a doctor right away.
  • After any reaction, tell your doctor what happened, the date and time it happened, and when the vaccination was given.
  • Ask your doctor, nurse, or health department to file a VAERS form, or call 1-800-822-7967.


Not vaccinating your child? Be aware of the risks.

Immunizations, like any medication, can cause side effects. However, a decision not to immunize a child also involves risk. It is a decision to put the child and others who come into contact with him or her at risk of contracting a disease that could be dangerous or deadly. Immunizations are protective not only for individuals, but for communities as well. To learn more about what can happen when people contract vaccine-preventable diseases, such as measles and pertussis, visit .


More information about vaccine safety

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