Hello, my 5 month old baby suffered from uti with enterococcus bacteria. Was on iv antibiotics for 7 days. Followed by oral antibiotics. Later cephlaexin syrup 3 ml daily dose till date. Doc has asked for mcu scan. Before that we performed urine routine & culture. Urine pus cell was occasional. Bacteria nil. But culture report said significant growth of some other named bacteria. We waited 1 week to retest. 3 days back baby had fever so we ran to the doc to get him checked. Doc said its viral fever and cannot be uti again since he is on cephlexin daily dose. Still for our safety we had urine routine & culture done again. The urine routine says pus cell 3 -5. Bacteria nil. Culture report is yet to come but the prelimnary report said heavy growth of gram negative bacilli. Doc said it could be because of contamination. My question is. Why all the time different bacteria shows in the culture. Does he have uti. What could be the exact reason.