my daughter is having persistent fever 100 plus since last 10 days . first treated with amoxycillin for 3 days, then treated with augmentin for 2days, as physician was suspecting URTI, later dengue /malaria investigations were negative , but widal came borderline positive with slide method, so started Zifi , 3 doses and then hospitalised since last 48 hrs. Chest clear, spleen enlargement on USG abdomen, and IV Monosef 3 gm _OD is on since last 48 hrs. BUt still temp is not going down Blood culture no growth .Pl tell me how long will it take for fever to go down. In between she complains of headache as well.