Firstly, appropriate antipyretic and analgesic drugs such as ibuprofen and acetaminophen can be administered, together with physical cooling such as rubbing the armpits and groin with alcohol to reduce the fever. Then take viral drugs such as oseltamivir. It is important to note that the antiviral drugs should only be stopped after the body temperature has returned to normal. The above measures should be taken under the guidance of a medical professional and should not be tried on your own.