Last night, the baby had a fever of 39 degrees without any symptoms.

The baby has a fever of 39 degrees without any symptoms. He needs to go to the hospital for blood tests to identify pathogenic bacteria. If it is a viral infection, he can take antiviral drugs orally. At the same time, he should take ibuprofen suspension to reduce fever and control his body temperature to the normal range. He should keep warm and drink plenty of water.