The prevalence of H serogroups of Escherichia coli strains giving rise to acute urinary tract infection in children in Jahrom.

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. 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%). 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.