Well-appearing febrile infants Well-appearing febrile infants between 29 days and 60 days of age with all of the following are at low risk of serious bacterial infections: Rectal temperature < 38.5° C Normal WBC count (5, 000 to 15, 000 / mcL [5 to 15 × 10 9 / L] and an absolute neutrophil count < 4000 / mcL [≤ 4 × 10 9 / L]) Normal inflammatory marker levels (procalcitonin < 0.5 ng / mL [< 0.5 mg / L] and / or CRP < 2 mg / dL [< 20 mg / L]) Normal urinalysis (and CSF analysis and chest x-ray, if done) Blood and urine cultures should be obtained.