How to deal with recurrent fever in a 4-month-old baby?

Patient's question:

The baby has a fever; at 4 PM on the 21st, it was discovered that the rectal temperature was 39 degrees; two hours later, the hospital measured the ear temperature at 39.7 degrees; the urine test revealed a bacterial infection; IV saline was administered, and the fever immediately dropped to around 37.7 degrees; by 6 AM on the 22nd, the baby's fever had risen again, with a rectal temperature of over 39 degrees; they went to the hospital again; after receiving IV fluids, the fever returned to normal; at 5 PM that afternoon, the temperature rose again to 40 degrees; no cough or other symptoms were observed in the baby.
Treatment history and effectiveness: The hospital visited was Ningbo Women and Children's Hospital; the current situation is as follows:
Type of help needed: Very anxious; the baby's fever reached 40 degrees; truly worried about the baby's future health.

Doctor's answer:

This recurrent fever in children should be considered as a possible symptom of an infectious disease. Since it has been confirmed as viral fever at the hospital, timely symptomatic treatment is necessary.
Advice: It is recommended to administer antipyretic medication for symptomatic treatment. Rest and increased fluid intake should be maintained. If necessary, it is important to promptly visit the outpatient department of a local hospital for follow-up. Under the guidance of a doctor, appropriate antibiotics such as cefixime can be administered for symptomatic treatment. Acute fever can be treated with ibuprofen for fever reduction.

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