My Husband 59.5 Years Old. Has Been On High Fever

My husband 59.5 years old. Has been on high fever for 13 days on and off. Because, Take iprofen 400mg will reduce the fever but 8 hours later fever will be back. 102 . His X-ray shows he got pneumonia. He has been taking levofloxacin 500 mg for 7 days. Still got 102.95 degree now. I am very worried.