Relationship between Urinary Tract Bacterial Infections and Blood Groups in Patients Referring to Alavi Hospital in Ardabil, Iran in 1395

Urinary tract infections are one of the most common bacterial infections of humans and also known as the second infectious agent. Blood group antigens are susceptible agent to cause infection in different parts of the body and have an important role in the pathogenesis of urinary tract infection. The purpose of this study was to determine the type of bacteria causing urinary tract infection in different blood groups. In this descriptive cross-sectional study, 491 urine samples were collected by Midstream clean catch technique from patients referring to laboratory of Alavi hospital in Ardabil.
The questionnaires including patient characteristics, history of the disease and type of blood group were completed for each patient. Data analysis was carried out using SPSS software version 20, fisher and chi-square test. The results of this study revealed that the most common bacteria causing urinary tract infection was Escherichia coli which had high incidence in both the A and O blood groups 76.4% and 91.4%, respectively (P= 0/042).Moreover, the prevalence of urinary tract infection by Escherichia coli was higher in women than in men (P= 0.128).
Also, there was a significant relationship between blood groups and incidence rate of types of urinary tract infection in women(P= 0.005). In this study, a significant correlation was observed between age(P= 0.025) and gender(P= 0.016) in patients. This study demonstrated that A and O blood phenotypes are more prevalent, and Escherichia coli is the most commonly isolated organism from urine culture samples.