Detection of pandemic B2-O25-ST131 Escherichia coli harbouring the CTX-M-9 extended-spectrum β-lactamase type in a feral urban brown rat (Rattus norvegicus).

The article focuses on a study which determined the prevalence of Escherichia coli harbouring genes of the CTX-M-ESBL type on wildlife animal species with close contact with human settlements, the brown rat. Faecal samples from urban brown rats were collected in Berlin, Germany. The isolates which were identified using CHORM agar orientation and were further processed by agar disk diffusion testing as a preliminary screen for antimicrobial resistance. Antibiotics wherein phenotypic antimicrobial resistance were detected include cefatoxime and cefalotin.