Template:Infant fever well antibiotics

Suspected Infection Source	8-21 Days Old	22-28 Days Old	29-60 Days Old
UTI	Ampicillin IV or IM (150 mg/kg per day divided q8) AND either: Ceftazidime IV or IM (150 mg/kg per day divided q8) or Gentamicin IV or IM (4 mg/kg per dose q24)	Ceftriaxone IV or IM (50 mg/kg per dose q24)	Ceftriaxone IV or IM (50 mg/kg per dose q24) Oral options: Cephalexin 50-100 mg/kg per day QID or Cefixime 8 mg/kg QD
No source identified	Ampicillin IV or IM (150 mg/kg per day divided q8) AND either: Ceftazidime IV or IM (150 mg/kg per day divided q8) or Gentamicin IV or IM (4 mg/kg per dose q24)	Ceftriaxone IV or IM (50 mg/kg per dose q24)	Ceftriaxone IV or IM (50 mg/kg per dose q24)
Bacterial meningitis	Ampicillin IV or IM (300 mg/kg per day divided q6) AND Ceftazidime IV or IM (150 mg/kg per day divided q8)	Ampicillin IV or IM (300 mg/kg per day divided q6) AND Ceftazidime IV or IM (150 mg/kg per day divided q8)	Cephalosporin Ceftriaxone IV (100 mg/kg QD) or Ceftazidime IV (150 mg/kg QD) AND Vancomycin IV (60 mg/kg QD)

↑ Evaluation and Management of Well-Appearing Febrile Infants 8 to 60 Days Old Robert H. Pantell, Kenneth B. Roberts, William G. Adams, Benard P. Dreyer, Nathan Kuppermann, Sean T. O'Leary, Kymika Okechukwu and Charles R. Woods; Subcommittee On Febrile Infants Pediatrics July 2021, e2021052228; DOI: https://doi.org/10.1542/peds.2021-052228