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首页> 外文期刊>Journal of Clinical Microbiology >Misidentification of a Mucoid Strain of Salmonella enterica Serotype Choleraesuis as Hafnia alvei by the Vitek GNI+ Card System
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Misidentification of a Mucoid Strain of Salmonella enterica Serotype Choleraesuis as Hafnia alvei by the Vitek GNI+ Card System

机译：通过Vitek GNI +卡系统将肠炎沙门氏菌血清型霍乱沙门氏菌粘液菌株误认为是Hafnia alvei

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Nontyphoidal salmonellae are among the most common causes of bacterial gastroenteritis worldwide. They are also notable causes of extraintestinal infections, including bacteremia and vascular infections. Salmonella enterica serotype Choleraesuis is typically associated with invasive infections. We report a patient who had an infected intra-abdominal aortic aneurysm due to an unusually mucoid strain of Salmonella enterica serotype Choleraesuis. The isolate was erroneously identified as Hafnia alvei by the Vitek GNI+ card system. A blood culture isolate taken from the same patient 9 months earlier was also identified as H. alvei by the Vitek GNI+ card system. Despite an apparent cure with intravenous amoxicillin-clavulanic acid at that time, the Salmonella infection had not been cleared and manifested as a ruptured infected abdominal aortic aneurysm. Repeated passage of the strain yielded nonmucoid colonies, which were correctly identified by the API and PHOENIX systems. The isolates from the aneurysm and the former bacteremic episode were found to be identical using pulsed field gel electrophoresis. The fallibility of automated bacterial identification systems is highlighted. Such errors are especially important for isolates in which in vitro antibiotic susceptibility testing does not correlate with the clinical success of treatment, as illustrated by Salmonella infections.
机译：非伤寒沙门氏菌是全世界细菌性肠胃炎的最常见原因。它们也是引起肠外感染的重要原因，包括菌血症和血管感染。肠炎沙门氏菌血清型霍乱伊蚊通常与侵袭性感染有关。我们报告了一名患者，该患者由于沙门氏菌血清型霍乱弧菌的异常粘液样而感染了腹主动脉瘤。 Vitek GNI +卡系统错误地将该分离物鉴定为。 9个月前从同一患者身上提取的血培养分离物也被鉴定为 H。 Vitek GNI +卡系统的alvei 。尽管当时可以用阿莫西林-克拉维酸静脉滴注治愈，但沙门氏菌感染尚未清除，表现为受感染的腹主动脉瘤破裂。菌株的反复传代产生了非粘液菌落，其被API和PHOENIX系统正确鉴定。使用脉冲场凝胶电泳发现，来自动脉瘤和前菌群的分离株是相同的。突出了自动细菌识别系统的易错性。对于沙门氏菌感染所表明的，这种错误对于体外抗生素药敏试验与治疗的临床成功无关的分离株尤其重要。

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