fist of all we are dealing with an infant who is suspected to have sepsis because of the fever , so blood, urine and CSF cultures must be obtained first . the choice of antibiotics is very important since this is considered a late onset sepsis , the use of ampicillin + cefotaxim with or without vancomycin OR another combination of tienam + vancomycin is the most appropriate combinations . the results of stool : budding yeast is seen when the stool samples are left forever before testing it , I recommend repeating that , the reducing substance is suggesting a carbohydrate malabsorption and is confirmed by a hydrogen breath test , and milk should be changed into lactose free milk , soy-based formula is useless. . this malabsorption can lead in some cases to dehydration and intravenous fluid contains glucose and saline is needed . I hope this helps