#AskTheExpert Sir, Radnyee Vispute is 5 month old female who is having fever 99 to 101 frequently. She was in NICU for 5 days. All blood culture, urine culture and blood tests, immunity test, TB tests are normal. Reason is still unknown. Last time she had fever for 8 days without dropping much. Now also she is having fever 100. T 98 is given once or twice a day. When fever she becomes drowsy and less active with less feed. What could be the probable reasons for frequent fever?