One of the most serious problems that can occur with getting any vaccine is a severe allergic reaction. If this were to happen, it would most likely happen within a few minutes to a couple of hours after getting a vaccine. Even though this is rare, it’s important to seek medical help if this occurs.
- Signs of a severe allergic reaction:
- Swelling of the face and/or throat
- Difficulty breathing, wheezing and/or hoarseness
- Rapid heartbeat
Other indicators that your child may have had a serious reaction to a vaccine:
- Very high fever
- Behavioral changes