Isolation, identification, and antibiotic sensitivity testing of bacterial species causing urinary tract infection in different zones of Libya's Brega city region
Keywords:
bacterial species, urinary tract infection, LibyaAbstract
The present study aims to investigate the distribution of Gram-positive and Gram-negative bacteria responsible for urinary tract infections (UTIs) among different age groups in Brega, Libya. A total of 500 mid-stream urine (MSU) samples were collected from both "inpatients and outpatients at Brega Qarawi Hospital" (Zone III), the Family Clinic (Zone I), and the Industrial Clinic (Zone I). Participants included 285 males and 215 females, with ages ranging from 15 to 65 years. Findings revealed that the overall prevalence of UTIs in Brega was approximately 45%, with a slightly higher occurrence among males (46%) compared to females (44%). Adults represented the most affected group (72.4%), "followed by the elderly (16.4%)" and adolescents (11.1%). Outpatients accounted for the majority of cases (62.2%), while inpatients represented 37.7%. Regarding bacterial etiology, "Escherichia coli was the predominant pathogen, responsible for nearly half of the infections" (49.7%). Klebsiella pneumoniae and Pseudomonas aeruginosa were identified in 20.8% and 10.2% of the cases, respectively. Gram-positive bacteria were less frequently detected, with Staphylococcus aureus accounting for 5.3% and Staphylococcus saprophyticus for 2.6%.Antimicrobial susceptibility testing indicated that Imipenem (IMI) demonstrated the highest efficacy among the antibiotics evaluated in this study.
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