Abstract
The emergence of acquired carbapenemases is a serious threat to public health worldwide, forcing the use of last-resort antibiotics such as polymyxins. Use of such molecules had recently led to the emergence of colistin-resistant carbapenemase-producing isolates, leaving only a few therapeutic options for the near future. Here we report the identification of colistin-resistant isolates among a collection carbapenemase-producing Enter- obacteriaceae and Acinetobacter baumannii isolates.