Escherichia coli is considered to be the main causative agent of urinary tract infections (UTIs).
The aim of this study was to determine the occurrence of some virulence genes among a hundred Escherichia
coli isolates obtained patients with urinary tract infection (UTI) refer to medical clinical laborator’s Shahrekord,
Iran. In this investigation we isolated E. coli strains from urine samples of patients with UTI during the period
of April 2011 to September 2011and studied them for the presence of the virulence genes by multiplex PCR.A
total of 100 E.coli strains were isolated, the prevalence of genes such as: pyelonephritis associated pili
(pap genes), S-family adhesions (sfa gene), type1fimbriae (fimHgene), s, aerobactin (aer gene) and
pyelonephritis isolates compared (pic gene) among the isolated strains was:40%, 30%, 30%, 12%, 4%.
