Detection of blaCTX-M-27-encoding Escherichia coli ST206 in Nigerian poultry stocks

Sir, Antimicrobial-resistant Gram-negative bacteria are an emerging problem worldwide. ESBL producers, especially those harbouring blaCTX-M genes, have been detected in increasing numbers worldwide, including on the African continent.1 In Nigeria, there is little information on ESBL-producing Escherichia coli in poultry farms with respect to their phylogenetic relationships. Here, we characterized isolates collected from faecal samples of healthy chicken from 11 small commercial poultry farms in five states in Southwestern Nigeria using phenotypic and genotypic methods [see Supplementary Materials and methods and Tables S1 and S2 (available as Supplementary data at JAC Online)]. Ethics approval was not needed because faecal samples were...