Frequency of Bacteria Implicated in Urinary Tract Infections in Besat Hospital, Sanandaj: a Three-Year Surveillance Study (2013- 2015)

Urinary tract infections (UTIs), as most common bacterial infection in humans, are major causes of morbidity in the world. The aim present study was to determine prevalence and profile of bacteria implicated in UTIs inpatients and out-patients of Besat hospital in Sanandaj, located in northwest of Iran.
This cross-sectional study carried out during the period 2013 -2015. All urine samples from patients with symptoms of UTI investigated in hospital Laboratory. Samples with more than 105 CFU/mL bacteria were considered positive and, for these samples, the type of bacteria were identified. All analysis conducted in STATA version 13.
From January 2013 to December 2015, 1359 patients with UTIs identified that 1196 (88.0%) and 163 (12.0%) from them were Gram-negative and Gram-positive, respectively. Among Gram-negative pathogens the most prevalent were E. coli 977 (81.7%), followed by Enterobacter (6.3%). The majority 924 (77.3%) of the Gram-negative isolates were from female while the remaining were males. Among Gram-positive pathogens the most prevalent were Staphylococcus epidermidis (35.6%) followed by Staphylococcus aureus (28.2%). The chance of E. coli infection related to the UTI in women (OR=1.83) and in outpatient persons (OR=2.37) was significantly higher (P This study revealed that E. coli was the predominant bacterial pathogen in studied population. The results can be useful for clinician in order to improve the empiric treatment.