A Case of IMP-4-, OXA-421-, OXA-96-, and CARB-2-Producing Acinetobacter pittii Sequence Type 119 in Australia

Abstract

An IMP-4-producingAcinetobacterpittiistrain coproducing oxacillinases was isolated from a leg wound of a 67-year-old female patient. Identification to the species level byrpoBandgyrBsequencing and multiplex-PCR-based analysis revealed that the isolate wasA. pittii. Whole-genome sequencing of thisA. pittiiisolate determined the presence ofblaOXA-96,blaCARB-2, and a novelblaOXA-421gene. The position of this novelblaOXA-421gene was similar to that ofblaOXA-51inA. baumannii, downstream of the phosphinothricinN-acetyltransferase gene and upstream offxsAin the chromosome. ThisA. pittiiisolate was found to belong to sequence type 119 (ST119). Here, we report the first isolation of IMP-4-producingA. pittiiST119 with a novelblaOXA-421gene from a patient in Australia and characterize its draft genome.