Outbreaks of Mucorales and the Species Involved

被引:50
作者
Walther, Grit [1 ]
Wagner, Lysett [1 ]
Kurzai, Oliver [1 ,2 ]
机构
[1] Hans Knoell Inst, Leibniz Inst Nat Prod Res & Infect Biol, German Natl Reference Ctr Invas Fungal Infect, D-07745 Jena, Germany
[2] Univ Wurzburg, Inst Hyg & Microbiol, Wurzburg, Germany
关键词
Outbreak; Mucormycosis; Mucorales; Rhizopus; Lichtheimia; Mucor; WOODEN TONGUE DEPRESSORS; CUTANEOUS MUCORMYCOSIS; RHIZOPUS MICROSPORUS; APOPHYSOMYCES-ELEGANS; FUNGAL CONTAMINATION; INFECTION; ZYGOMYCOSIS; EPIDEMIOLOGY; DNA; RHIZOPODIFORMIS;
D O I
10.1007/s11046-019-00403-1
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
The order Mucorales is an ancient group of fungi classified in the subphylum Mucoromycotina. Mucorales are mainly fast-growing saprotrophs that belong to the first colonizers of diverse organic materials and represent a permanent part of the human environment. Several species are able to cause human infections (mucormycoses) predominantly in patients with impaired immune system, diabetes, or deep trauma. In this review, we compiled 32 reports on community- and hospital-acquired outbreaks caused by Mucorales. The most common source of mucoralean outbreaks was contaminated medical devices that are responsible for 40.7% of the outbreaks followed by contaminated air (31.3%), traumatic inoculation of soil or foreign bodies (9.4%), and the contact (6.2%) or the ingestion (6.2%) of contaminated plant material. The most prevalent species were Rhizopus arrhizus and R. microsporus causing 57% of the outbreaks. The genus Rhizomucor was dominating in outbreaks related to contaminated air while outbreaks of Lichtheimia species and Mucor circinelloides were transmitted by direct contact. Outbreaks with the involvement of several species are reported. Subtyping of strains revealed clonality in two outbreaks and no close relation in two other outbreaks. Based on the existing data, outbreaks of Mucorales can be caused by heterogeneous sources consisting of different strains or different species. Person-to-person transmission cannot be excluded because Mucorales can sporulate on wounds. For a better understanding and prevention of outbreaks, we need to increase our knowledge on the physiology, ecology, and population structure of outbreak causing species and more subtyping data.
引用
收藏
页码:765 / 781
页数:17
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