[Molecular epidemiology of Acinetobacter baumannii strains isolated in the years 2008-2010 in University Hospital no. 2 in Bydgoszcz].

INTRODUCTION: Hospital infection registers prepared by Anaesthesiology and Intensive Care Unit (AICU) of J. Biziel University Hospital no. 2 in Bydgoszcz in the years 2007-2010 indicated to high incidence of bacterial infections of Acinetobacter baumannii aetiology. The specificity of the Unit poses the risk of hospital infection with environmental bacteria constituting the bacterial flora of the Unit to other units of the hospital in accordance with the direction of the patients relocation.
MATERIAL AND METHODS: [corrected] In order to determine the aforementioned risk, the authors had collected and stored (in frozen state) Acinetobacter strains of similar phenotype as regards the resistance (146 isolates were collected in total) for 3 years and then the genotype of 12 selected isolates was determined. Differential molecular diagnosis was performed using pulsed field gel electrophoresis (PFGE). RESULTS. Results of the molecular tests of Acinetobacter strains (isolated from clinically significant material) were analysed in the context of epidemiologic investigations. On the basis of the results, the authors found out that there are at least two epidemic strains of Acinetobacter baumannii; one of them was isolated from patients treated in AICU only. It is alarming that genotype has been isolated from the patient who has never been treated in AICU. Transfer of hospital infections caused by Acinetobacter baumannii strains isolated so far from AICU