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Category: Food Microbiology; Applied and Industrial Microbiology
Yersinia enterocolitica and Yersinia pseudotuberculosis, Page 1 of 2
< Previous page | Next page > /docserver/preview/fulltext/10.1128/9781555815936/9781555814595_Chap11-1.gif /docserver/preview/fulltext/10.1128/9781555815936/9781555814595_Chap11-2.gifAbstract:
Yersiniosis is an infectious disease caused by Yersinia, food-borne yersiniosis being due to Yersinia enterocolitica or Yersinia pseudotuberculosis. Jerret and coworkers reported that Y. pseudotuberculosis is one of the most common infectious causes of death among farmed deer in Australia. The primary transmission route of human yersiniosis is proposed to be fecal-oral via contaminated food. The most important intrinsic factors are nutrition, pH, and water activity. The most important extrinsic factors include temperature and gas atmosphere. DNA extraction procedures using silica particles or chelex resin have commonly been used, as they are rapid and simple to use; however, they are not necessarily the most effective methods to remove inhibitors from complex matrices. The majority of Y. enterocolitica isolates recovered from nonhuman sources are considered nonpathogenic; thus, it is important to assess the pathogenicity of isolates. The methods are based on specific segments of the virulence plasmid or the chromosomal DNA with known virulence functions. A combination of direct contact with wildlife feces during the storage and cross-contamination of the equipment are the most likely contributing factors. Although several studies on the epidemiology of enteropathogenic Yersinia have been conducted, a lot of questions remain to be solved using DNA-based detection and characterization methods in the future.
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Number of yersiniosis cases in Finland from 1995 to 2006 (http://www3.ktl.fi/stat/).
Distribution of different virulence determinants among high-, low-, and nonpathogenic Yersinia enterocolitica strains belonging to the most common bioserotypes.
Transmission of Yersinia enterocolitica and Yersinia pseudotuberculosis to humans.
Reported Yersinia pseudotuberculosis outbreaks
Ecological and geographical distribution of most common serotypes of Yersinia enterocolitica and Yersinia pseudotuberculosis
Virulence factors of Yersinia enterocolitica and Yersinia pseudotuberculosis
Animal reservoirs for Yersinia enterocolitica and Yersinia pseudotuberculosis
Prevalence of Yersinia pseudotuberculosis in animal sources
Prevalence of pathogenic Yersinia enterocolitica in foods with PCR and culture methods
Effect of temperature on activity of virulence-related genes in Y. enterocolitica b
Detection of Yersinia enterocolitica and Yersinia pseudotuberculosis in food samples using PCR
Isolation methods of Yersinia enterocolitica and Yersinia pseudotuberculosis most commonly used for food samples a
Frequently used methods for molecular subtyping of Yersinia enterocolitica and Yersinia pseudotuberculosis