Abstract:

Background and Aim: Urinary tract infections are the most common infectious diseases. Nowadays, Escherichia coli has been reported as the predominant cause of urinary tract infection in 80-90% of patients. Typically, strains of Escherichia coli are divided in to four phylogenetic groups: A, B1, B2 and D.

Materials and Methods: In this study, 63 isolated E. coli from urine cultures of patients who were referred to clinical laboratories in Shahrekord, after certain diagnosis in the presence of specific primers 16srRNA, were studied to the phylogenetic grouping using suggested method by Clermont et al.

Results: After detection isolates of E. coli in the presence of specific primers, 33 (52.38%), 17 (26.94%), 8 (12.69%) and 5 (7.93%) isolated E. coli were  reported as A, D, B2 and B1 groups, respectively, after certain  diagnosis E. coli in the presence of 16srRNA specific primers. 51 isolates (80.95%) belonged to female and 12 isolates (19.04%) belonged to male gender. In statistical analysis according to Fisher test, there is no significant relation between gender and phylogenetic group.

‍Conclusion: In comparison to other areas, E. coli strains isolated from urinary tract infection in Shahrekord more belonged to the phylogenetic group A, which were different in phylogenetic types. It seems that by increasing of drug resistance profile, changing from Group B2 to Group A have been observed.