Investigation of the presence of Capnophilic bacteria in routine urine cultures

Capnophilic Escherichia coli (CEC) strains are rarely isolated from urinary tract infections (UTIs). The purpose of this research was to look into the incidence and traits of the CEC strains that cause UTIs. Nine (0.11%) epidemiologically unrelated CEC isolates with varying antibiotic susceptibility patterns were identified from patients with various co-morbidities after the evaluation of 8500 urine samples. Three of these strains belonged to the O25b-ST131 clone, and none of them possessed the yadF gene. Due to adverse incubation conditions, CEC isolation is difficult. Although rare, capnophilic incubation of urine cultures may be considered particularly for patients with underlying predisposing conditions.

Automated summary

This research investigated the incidence and traits of capnophilic Escherichia coli (CEC) strains causing urinary tract infections (UTIs). Among 8500 urine samples, only nine (0.11%) epidemiologically unrelated CEC isolates with varying antibiotic susceptibility patterns were identified. Three of these isolates belonged to the O25b-ST131 clone, but none of them possessed the yadF gene. Isolation of CEC is difficult due to adverse incubation conditions, and capnophilic incubation of urine cultures may be considered for patients with underlying predisposing conditions.