Division of Bacteriology, Department of Microbiology and Immunology, School of Medicine, Tottori University Faculty of Medicine, 86 Nishi, Yonago, Tottori 683-8503, Japan.
Infect Genet Evol. 2011 Jan;11(1):52-6. doi: 10.1016/j.meegid.2010.10.011. Epub 2010 Oct 20.
The genus Acinetobacter is an important causative pathogen of nosocomial infections in the healthcare setting. The objectives of this study were to determine the species of causative pathogens and the sources of Acinetobacter blood stream infections that occurred in 2 immunocompetent pregnant women admitted to an obstetrics ward within a 2-month period. Phenotypic identification of the two isolates from blood stream infections was inconsistent among the ID test, the MicroScan WalkAway and the Vitek2 systems. In addition to the growth profile and detailed biochemical analysis, genotypic identification and phylogenetic tree analysis based on the almost complete 16S rRNA sequence and the partial rpoB gene sequence confirmed the identification of these isolates as A. ursingii. Environmental investigation of the obstetrics ward revealed A. ursingii and different strains of Acinetobacter junii in specimens obtained from the ward shower bath, although the source and route of transmission for the A. ursingii infections were not clarified. Our findings show that A. ursingii can inhabit the hospital environment.
不动杆菌属是医疗机构中导致医院感染的重要病原体。本研究的目的是确定在 2 个月内入住产科病房的 2 例免疫功能正常的孕妇发生血流感染的病原菌种类和来源。2 株血流感染分离株的表型鉴定在 ID 试验、MicroScan WalkAway 和 Vitek2 系统之间不一致。除了生长谱和详细的生化分析外，基于近乎完整的 16S rRNA 序列和部分 rpoB 基因序列的基因型鉴定和系统发育树分析证实了这些分离株为鲍曼不动杆菌。对产科病房的环境调查显示，在病房淋浴室的标本中发现了鲍曼不动杆菌和不同的琼氏不动杆菌菌株，尽管未明确鲍曼不动杆菌感染的来源和传播途径。我们的研究结果表明，鲍曼不动杆菌可以栖息于医院环境中。
