Your child might not have side effects. But if there are side effects, they'll probably be like those of other vaccines, including:
- A fever.
- Muscle aches.
- Feeling very tired.
This is normal. The body is building protection against COVID-19.
Your child may have other side effects, including:
- Loss of appetite.
- Crankiness or crying.
- Chills.
- A headache.
- Pain, redness, a rash, or swelling in the arm or leg where they had the vaccine.
- Swollen lymph nodes in the armpit of the arm or in the groin area of the leg where they had the vaccine.
Side effects will likely go away in a few days.
If you think that your child has been exposed to COVID-19 or if they have symptoms like a cough, trouble breathing, a sore throat, or a runny nose, call your child's doctor. These aren't vaccine side effects. Your child needs a COVID-19 test.