CTX-M producing Escherichia coli isolated from cattle feces in Bogor slaughterhouse, Indonesia

Objective: To determine the occurrence of CTX-M producing Escherichia coli (E. coli) from cattle feces in Bogor slaughterhouse, Indonesia. Methods: A total of 220 cattle feces samples were collected from Bogor slaughterhouse from March to April 2015. Presence of extended-spectrum beta-lactamase (ESBL) producing E. coli was detected by disc diffusion test based on the recommendation from Clinical and Laboratory Standards Institute (2014). Bacterial strains which were confirmed as producing ESBLs were further analyzed for the presence of bla genes of the ESBL by PCR. Results: The results showed that CTX-M producing E. coli isolates were detected in 19 samples from 220 samples (8.6%). The β-lactamase genes detected were CTX-M-1 (n = 10) and CTX-M-9 (n = 9). All of the CTX-M producing E. coli isolates showed multidrug resistance phenotypes to at least four antibiotics. The highest incidence of antibiotics resistance was showed to ampicillin (100.0%), cefotaxime (100.0%), and cefpodoxime (100.0%), followed by streptomycin (84.3%), trimethoprim-sulfamethoxazole (73.7%), erythromycin (52.6%), kanamycin (26.3%), doxycycline (10.5%), and ceftazidime (0.0%). Conclusions: Detection of CTX-M-producing E. coli in cattle feces raises important questions as they can represent a potential risk factor to public health