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Children's Vaccines Health Center

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DTaP and Tdap Vaccines


Are There Dangers Associated With DTaP and Tdap? continued...

Other very rare problems that have been reported include long-term seizures, coma or lowered consciousness, and brain damage. These problems have occurred so rarely that the CDC says it's impossible to tell whether they were actually related to the vaccine or caused by something else.

There are some mild problems that commonly occur after getting the vaccine. They include:

  • fever
  • redness or swelling at the site of the shot
  • soreness or tenderness at the site of the shot
  • fussiness
  • tiredness
  • vomiting

These problems could occur within one to three days after the shot and generally pass quickly. If your child has ever had seizures from any cause, it's important to control fever. Using an aspirin-free pain reliever in the 24 hours after the shot is given can help control fever and relieve pain. Do not give aspirin to a child under the age of 18 for fever. Aspirin can cause a very serious life-threatening illness called Reye's syndrome, which can cause brain and liver damage.

Keeping immunizations up to date can protect not only you and your children from a serious illness but also your community.

WebMD Medical Reference

Reviewed by Hansa D. Bhargava, MD on April 22, 2015
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