Yersinia spp. in Wild Rodents and Shrews in Finland

Show full item record



Permalink

http://hdl.handle.net/10138/309549

Citation

Joutsen , S , Laukkanen-Ninios , R , Henttonen , H , Niemimaa , J , Voutilainen , L , Kallio , E R , Helle , H , Korkeala , H & Fredriksson-Ahomaa , M 2017 , ' Yersinia spp. in Wild Rodents and Shrews in Finland ' , Vector Borne and Zoonotic Diseases , vol. 17 , no. 5 , pp. 303-311 . https://doi.org/10.1089/vbz.2016.2025

Title: Yersinia spp. in Wild Rodents and Shrews in Finland
Author: Joutsen, Suvi; Laukkanen-Ninios, Riikka; Henttonen, Heikki; Niemimaa, Jukka; Voutilainen, Liina; Kallio, Eva R.; Helle, Heikki; Korkeala, Hannu; Fredriksson-Ahomaa, Maria
Other contributor: University of Helsinki, Departments of Faculty of Veterinary Medicine
University of Helsinki, University of Helsinki
University of Helsinki, Department of Virology
University of Helsinki, Departments of Faculty of Veterinary Medicine
University of Helsinki, University of Helsinki







Date: 2017-05
Language: eng
Number of pages: 9
Belongs to series: Vector Borne and Zoonotic Diseases
ISSN: 1530-3667
DOI: https://doi.org/10.1089/vbz.2016.2025
URI: http://hdl.handle.net/10138/309549
Abstract: Yersinia enterocolitica and Yersinia pseudotuberculosis are important zoonotic bacteria causing human enteric yersiniosis commonly reported in Europe. All Y. pseudotuberculosis strains are considered pathogenic, while Y. enterocolitica include both pathogenic and nonpathogenic strains which can be divided into six biotypes (1A, 1B, and 2-5) and about 30 serotypes. The most common types causing yersiniosis in Europe are Y. enterocolitica bioserotypes 4/O:3 and 2/O:9. Strains belonging to biotype 1A are considered as nonpathogenic because they are missing important virulence genes like the attachment-invasion-locus (ail) gene in the chromosome and the virulence plasmid. The role of wild small mammals as a reservoir of enteropathogenic Yersinia spp. is still obscure. In this study, the presence of Yersinia spp. was examined from 1840 wild small mammals, including voles, mice, and shrews, trapped in Finland during a 7-year period. We isolated seven Yersinia species. Y. enterocolitica was the most common species, isolated from 8% of the animals; while most of these isolates represented nonpathogenic biotype 1A, human pathogenic bioserotype 2/O:9 was also isolated from a field vole. Y. pseudotuberculosis of bioserotype 1/O:2 was isolated from two shrews. The ail gene, which is typically only found in the isolates of biotypes 1B and 2-5 associated with yersiniosis, was frequently (23%) detected in the nonpathogenic isolates of biotype 1A and sporadically (6%) in Yersinia kristensenii isolates. Our results suggest that wild small mammals, especially voles, may serve as carriers for ail-positive Y. enterocolitica 1A and Y. kristensenii. We also demonstrate that voles and shrews sporadically excrete pYV-positive Y. enterocolitica 2/O:9 and Y. pseudotuberculosis 1/O:2, respectively, in their feces and, thus, can serve as a contamination source for vegetables by contaminating the soil.
Subject: ail gene
isolation
wild small mammals
Yersinia
zoonoses
ENVIRONMENTAL-SAMPLES
ESCHERICHIA-COLI
AIL GENE
ENTEROCOLITICA
PSEUDOTUBERCULOSIS
INFECTION
SALMONELLA
OUTBREAK
STRAINS
CARROTS
3142 Public health care science, environmental and occupational health
413 Veterinary science
Rights:


Files in this item

Total number of downloads: Loading...

Files Size Format View
Joutsen_et_al._2017_VBZD_1.pdf 283.5Kb PDF View/Open

This item appears in the following Collection(s)

Show full item record