Daughters friend developed temp of 103. Took to ER. I think they did blood test and say nothing is wrong. RX doxycycline, Motrin, ASA. He s been taking the meds and the fever came back 24 hrs later. Returned to ER, lower lumbar tap showed negative. They work at a Boy Scout camp and went this weekend to Northern VA to visit his family. On trip back to camp he started saying he was cold and she realized he was burning up
Sounds like his fever is due to a virus.  An antibiotic will not stop a viral infection, it has to run its course.