Nosocomial outbreaks of urinary tract infections caused by spp. have been rare in recent decades. To identify the origin of an sp. outbreak, conduct multi-modal infection control measures, and finally to stop the outbreak. To this end, an epidemiological outbreak investigation and risk factor analysis were performed. sp. was detected in 22 patients in our urology wards and six environmental cultures of specimens obtained from the operating rooms. Strains isolated were submitted for antimicrobial susceptibility testing. An on-site epidemiological investigation, evaluation of patient medical records, and environmental sampling were performed to identify the source of the outbreak, and implementation of infection control intervention. A case–control study was performed to analyse the potential risk factors. Environmental sampling showed that the source of the infection for 22 patients was an ISA-IIIA-type medical pressurizer containing contaminated water. A case–control analysis showed that the risk factors for infection were: diagnosis of kidney/ureteral stones, surgery, placement of a double-J stent, and history of hospitalization in the past three months. It was concluded that the outbreak occurred in patients who underwent internal lithotripsy and double-J stent placement, due to contact transmission with the contaminated sensor and connecting tubes of the ISA-IIIA-type medical pressurizer.

中文翻译：

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由含有受污染水的医院设备引起的无色杆菌爆发：感染的危险因素

由细菌引起的尿路感染的院内暴发。近几十年来都很少见。确定 sp 的起源。采取多模式感染控制措施，最终阻止疫情爆发。为此，开展了疫情流行病学调查和危险因素分析。 sp。在我们泌尿科病房的 22 名患者和从手术室获得的标本的 6 种环境培养物中检测到了这种物质。分离出的菌株被提交用于抗菌药物敏感性测试。进行了现场流行病学调查、患者病历评估和环境采样，以确定疫情源头，并实施感染控制干预措施。进行病例对照研究来分析潜在的危险因素。环境采样显示，22名患者的感染源是含有污染水的ISA-IIIA型医用增压器。病例对照分析显示，感染的危险因素为：肾/输尿管结石的诊断、手术、双J管植入以及过去三个月的住院史。结论是，疫情发生在接受体内碎石和双J支架置入的患者中，是由于接触污染的传感器和ISA-IIIA型医用加压器的连接管而传播的。