Abstract
Pseudomonas aeruginosa is a pathogenic bacterium that can contaminate water. In this study, 430 water samples were evaluated for P. aeruginosa, antibiotic resistance, and the abundance of virulence factors. P. aeruginosa was isolated from 28 (6.51%) water samples. Among the types of water, well and spring water showed the highest P. aeruginosa with, respectively, 20 (15.6%) and 5 (8.06%) positive samples per type of samples. Drinking water and mineral water showed minor contamination with P. aeruginosa. The prevalence of antibiotic resistance against meropenem, imipenem, erythromycin, gentamicin, chloramphenicol, and enrofloxacin was zero. The lowest and highest prevalence of antibiotic resistance was observed in drinking water and well water, respectively. The most abundant genes encoding antibiotic resistance in the P. aeruginosa were blaTEM, blaCTX-M, and blaSHV. This study also showed that the most abundant virulence genes in the Pseudomonas aeruginosa strain isolated from water were algD (15 = 3.49%), lasB (11 = 2.56%), toxA (10 = 2.32%), and exoS (7 = 1.63%). This study suggests that water may be a source of P. aeruginosa and contribute to releasing resistance genes through the food chain. Cross-contamination is the water transfer process that can cause contamination with P. aeruginosa in water. Therefore, hygienic principles can be effective in reducing water contamination.
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