Determination of antibiotic resistance levels of Escherichia Coli isolates obtained from freshwater sources: Batlama Creek, Giresun

The aim of this study is to investigate the antibiotic resistance levels of E. coli isolated from Batlama Creek, Giresun. For this purpose, the surface water samples were collected monthly from different stations between June 2016 and May 2017. The aim of this study is to investigate the antibiotic resistance levels of E. coli isolated from Batlama Creek, Giresun. For this purpose, the surface water samples were collected monthly from different stations between June 2016 and May 2017. Antibiotic resistances of E. coli isolates for ampicillin (59%), tetracycline (50,8%), nalidixic acid (44,4%), erythromycin (42,9%), chloramphenicol (38,1%), cefazolin (36%), cefuroxime (35,9%), cefotaxime (28,4%) were determined, respectively. The highest resistant 3 isolates were resistant against to 9 antibiotics, while the weak resistance of 7 isolates were sensitive to all antibiotics. Moreover, multiple antibiotic resistance (MAR) were determined from the rate of 73,28% of isolates in surface water samples. Also, antibiotic resistance index (ARI) values ranged from 0,3 to 0,4. As a result of, high antibiotic resistance levels of surface water isolates of Batlama Creek can be said to threaten to both Black Sea and freshwater ecosystems.