Outbreak of neonatal infection by an endemic clone of Serratia marcescens.

Introduction: The outbreak occurred between February and June 2006 and included identification of the cases, analysis of medical records, cultures from environmental sources, resistance analyses and genotyping profile of Serratia marcescens.

Methods: The cultures were composed of 13 blood isolates, 17 rectal and hand swabs and air sampling.

Results: The data obtained by pulsed-field gel electrophoresis exhibited three strains that contaminated 24 patients.