Skip Ribbon Commands
Skip to main content

Safety & Prevention

What vaccine side effects should concern me?

If your child has negative effects after being vaccinated, let your pediatrician know about them at your next office visit. A few side effects are signs of a serious reaction, and if you see them, call your pediatrician immediately. They include

  • Hives
  • Difficulty breathing
  • Extreme irritability
  • A very high fever (above 104°F)
  • A generalized rash

If your child has a large amount of swelling at the site where the shot was given, let your pediatrician know before the next immunization.


Last Updated
Immunizations & Infectious Diseases: An Informed Parent's Guide (Copyright © 2006 American Academy of Pediatrics)
The information contained on this Web site should not be used as a substitute for the medical care and advice of your pediatrician. There may be variations in treatment that your pediatrician may recommend based on individual facts and circumstances.