شیوع انواع سروتایپ های H اشرشیا کلی درایجاد عفونت ادراری در کودکان شهر جهرم

Introduction: Nowadays E.coli  the most common Cause of acute urinary tract in fection are generally named based on  serotypes of O and H . The aim of this Cross-Sectional  study, was to determine the prevalence of H serogroups of E. coli strains that cause community acquired UTI in children.  Methods and materials: In this study 96 children with urinary tract infections (UTI) referred to two teaching Hospitals, in Jahrom, Iran during the period of August 2005- August 2006 were enrolled.  Antibiogram was done by disk diffusion method and serotyping by tube and slide agglutination methods.  Results:A Total of  96 E. coli strains were isolated from the urine samples of children with UTI aged from one month to 14 years. Cystitis was diagnosed in 49.2% and pyelonephritis in 50.8% of these patients. The most resistance was related to Ampicilin (80.2%) and the least to imipenem (1.1%). The most common type of H antigen was H4 (6.1%).  Conclusion: This is the first report of E-coli serotying in children with UTI from the south of Iran and its relation ship  with antibiotic resistance and clinical presentation. Funthen reoeach in athes p ts with move st e thypes is re Commended.