Relevance of Citrobacter species in urinary tract infections: a 10 year surveillance study

G. Márió
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Abstract

Abstract Urinary tract infections are the third most common infections in human medicine worldwide. Citrobacter species present a challenge to both clinicians and clinical microbiologists, due to various intrinsic and acquired resistance mechanisms. This study includes microbiological and resistance data on urine samples positive for Citrobacter spp. between January 1, 2008 and December 31, 2017 at the Department of Clinical Microbiology, University of Szeged. Citrobacter species represented 0.7% (n=129) of outpatient samples and 0.6% (n=138) of inpatient samples. Their higher prevalence at advanced age (> 60 years) is consistent with that reported in the literature, whereas the clinical origin (inpatient/outpatient) of the urine specimens did not influence their isolation rates. Overall, the highest levels of resistance were observed with ceftriaxone (29.8% and 47.5%), whereas in case of gentamicin (8.3% and 25.4%) and fosfomycin (9.3 and 13.8%), the lowest level of resistance was detected, respectively. As these pathogens may cause nosocomial epidemics (usually in vulnerable patients groups), close and continuous monitoring is required at both institutional and national level.
尿路感染中柠檬酸杆菌种类的相关性:一项10年的监测研究
尿路感染是世界范围内人类医学中第三大常见感染。由于各种内在和获得性耐药机制,柠檬酸杆菌物种对临床医生和临床微生物学家提出了挑战。本研究包括2008年1月1日至2017年12月31日期间塞格德大学临床微生物学系柠檬酸杆菌阳性尿液样本的微生物学和耐药性数据。门诊样本中有0.7% (n=129)种,住院样本中有0.6% (n=138)种。它们在高龄(> 60岁)中较高的患病率与文献报道一致,而临床来源(住院/门诊)尿液标本不影响其分离率。总体而言,头孢曲松的耐药水平最高(29.8%和47.5%),庆大霉素(8.3%和25.4%)和磷霉素(9.3和13.8%)的耐药水平最低。由于这些病原体可能导致医院内流行(通常在脆弱患者群体中),因此需要在机构和国家一级进行密切和持续的监测。
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