Does the baby have side effects after getting the hepatitis B vaccine?

Patient's question:

Hello, please ask if there are any side effects of the hepatitis B vaccine for babies? The baby has had heart surgery but has already recovered.

Doctor's answer:

Hello, vaccination for hepatitis B generally has no side effects, but a small number of infants may experience some adverse reactions after receiving the vaccine.
Advice: Some infants may develop varying degrees of fever after vaccination, accompanied by nausea, loss of appetite, poor spirits, abdominal pain, diarrhea, and other adverse reactions. However, these symptoms usually subside within 24 hours and last no more than 3 days. If the fever is particularly severe, reaching above 39°C, you can give the child fever-reducing medication. If the high fever persists or if there are other abnormalities, it is important to seek medical treatment as soon as possible.

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