Introduction: In this study the occurrence of antimicrobial resistance patterns among fecal indicators (Escherichia coli and Enterococcus spp.) was analyzed in water and wastewater samples. The trends in antimicrobial resistance were analyzed using basic statistical methods. Methods: Samples were obtained from two local watercourses (Oliwski Stream and Reda River) as well as from the wastewater treatment plant (WWTP) Gdansk - Wschod. Bacterial strains were isolated using selective media and then the susceptibility analyses were carried out against the antimicrobial agents, important in treating human E. coli and enterococcal infection. To find the trends in antimicrobial resistance the results were analyzed using basic statistical methods: Kolmogorov-Smirnov Test (KST), Chi square independence test (the 2) and linear regression function. Results and Conclusions: According to the obtained data, in Oliwski Stream the ratio of E. coli with resistance patterns to all tested E. coli isolates suggested a positive correlation downstream. In the Reda River such association was not observed. In case of enterococci the explicit correlation between antimicrobial resistance rate against sampling points was also not confirmed. In case of wastewater samples, a positive selection of resistant isolates was observed during the treatment processes. Thus, it is suggested that bacteria carrying antimicrobial-resistance genes had a survival advantage over the sensitive ones.
Authors
Additional information
- Category
- Publikacja monograficzna
- Type
- rozdział, artykuł w książce - dziele zbiorowym /podręczniku w języku o zasięgu międzynarodowym
- Language
- angielski
- Publication year
- 2011
