Objectives: This study aimed to determine the rate of epidemiological characteristics, clinical, subclinical and treatment outcome of infants with sepsis caused by Klebsiella bacteria spp Methods: Retrospective series of records describing cases in infants with sepsis have positive blood cultures with Klebsiella spp bacteria in the intensive care unit in a positive newborn Children's Hospital 1, from 01 / 01 / 2008 to 31/12/2009.