Distribution of nosocomial infections caused by Klebsiella pneumoniae ESBL strain

Objectives: Hospital outbreaks of multidrug-resistant Klebsiella spp., especially those in neonatal wards, are often caused by new types of strains, the so-called extended-spectrum-beta-lactamase (ESBL) producers. Methods: The aim of this study was to determine the distribution of nosocomial infections caused by Klebsiella pneumoniae ESBL strain by location and kind of infections in the University Clinical Centre Tuzla during a period of one year. A prospective study was implemented for all patients who developed hospital infections caused by Klebsiella pneumoniae ESBL strain during the period from 1st of January to 31st of December 2010 year. Determination of nosocomial infections was performed using standardized CDC criteria. Mandatory registration of hospital infections was done via a written application form which is used for surveillance. Results: Hospital infections caused by Klebsiella pneumoniae ESBL strain were reported 141 times, during the year 2010. Most common hospital infection were urinary tract infections 52 times (36,9%), followed by respiratory tract infections 43 times (30,5%), infection of the gastrointestinal system 20 times (14,2%), infections of surgical sites 12 times (8,5%), 10 times (7,1%) the bloodstream infection and other infections 4 times (2,8%). Nosocomial infection was mostly reported in the Clinic of anesthesiology and reanimation 37 times (26,2%) and Clinic for children\'s diseases 33 times (23,4%). Regarding age, 41 (29,1%) of nosocomial infections were detected in patients below the age of one year and 35 (24,8%) in patients above the age of 65 years. Conclusion: Respiratory tract infections were reported more frequently in the intensive care unit than in the wards. However, infection of the urinary tract and gastrointestinal infections were reported more frequently in the wards than in intensive care units.