If any of the following symptoms occur in your child after they receive a vaccination, seek medical attention immediately:

• symptoms of a serious allergic reaction, including swelling of the face or throat or difficulty breathing within a few hours after injection
• temperature of 105 degrees F or higher within 2 days after injection.
• shock or collapse within 2 days after injection.
• persistent crying that lasts for more than 3 hours at a time within 2 days after injection
• seizures within 3-7 days after injection
• any serious brain problem within 7 days after injection
• worsening of seizures or other brain problem (at any time)