A year old half child has a fever 39 degrees how should do

A one-and-a-half-year-old child has a fever of 39 degrees and needs to take acetaminophen, ibuprofen and other antipyretic drugs as soon as possible to cool down so as not to further increase his body temperature. If the fever is caused by bacterial infection, antibiotics can be used; if the fever is caused by viral infection, antiviral drugs can be used.