Question
The child was vaccinated with the B type influenza vaccine on October 30 and then developed a fever.
Answer
Based on the symptoms you described, your child’s condition appears to be an adverse reaction to the vaccine, which may cause fever, redness, swelling, and lump at the vaccination site, as well as general fatigue. Your child’s condition requires active symptomatic medication treatment. I suggest that your child rest, drink plenty of water, and considering the current situation, it is best to receive intravenous antiviral and anti-inflammatory treatment. Fever reduction is important, and you can take medication granules for fever management. There is no need for hospitalization at this time. Wishing your child a speedy recovery.