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

摘要

An IMP-4-producing Acinetobacter pittii strain coproducing oxacillinases was isolated from a leg wound of a 67-year-old female patient. Identification to the species level by rpoB and gyrB sequencing and multiplex-PCR-based analysis revealed that the isolate was A. pittii. Whole-genome sequencing of this A. pittii isolate determined the presence of bla_OXA-96, bla_CARB-2, and a novel bla_OXA-421 gene. The position of this novel bla_OXA-421 gene was similar to that of bla_OXA-51 in A. baumannii, downstream of the phosphinothricin N-acetyltransferase gene and upstream of fxsA in the chromosome. This A. pittii isolate was found to belong to sequence type 119 (ST119). Here, we report the first isolation of IMP-4-producing A. pittii ST119 with a novel bla_OXA-421 gene from a patient in Australia and characterize its draft genome.