Pneumococcal conjugate vaccine

5. What are the risks from pneumococcal conjugate vaccine?

In clinical trials, pneumococcal conjugate vaccine was associated with only mild reactions:

  • Up to 3 out of 10 children had redness, tenderness, or swelling where the shot was given.
  • About 1 out of 10 had a mild fever.

However, a vaccine, like any medicine could cause serious problems, such as a severe allergic reaction. The risk of this vaccine causing serious harm, or death, is extremely small.

6. What if there is a moderate or severe reaction?

What should I look for?

Look for any unusual condition, such as a serious allergic reaction, high fever, or unusual behavior.

If a serious allergic reaction occurred, it would happen within a few minutes to a few hours after the shot. Signs of a serious allergic reaction can include:

  • difficulty breathing
  • weakness
  • hoarseness or wheezing
  • a fast heart beat
  • hives
  • dizziness
  • paleness
  • swelling of the throat

What should I do?

  • Call a doctor or get the person to a doctor right away.
  • 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 Vaccine Adverse Event Reporting System (VAERS) form, or call VAERS yourself at 1-800-822-7967.
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