Document Detail

Prevalence of Listeria monocytogenes in retailed meat in the Tokyo metropolitan area.
MedLine Citation:
PMID:  20828477     Owner:  NLM     Status:  MEDLINE    
This study was conducted to determine the prevalence of Listeria monocytogenes in retailed meats, comprising beef, chicken, and pork, in the Tokyo metropolitan area. A total of 379 samples of retailed meat were collected from 1998 to 2003, most of which were obtained by simultaneously purchasing the three classes of meat from a shop and then making another simultaneous purchase of meat from the same shop a few weeks later. The prevalence of L. monocytogenes was 28.0%, and the serotypes isolated were mainly 1/2a, 1/2b, 1/2c, and 4b. Comparison of the prevalence of each serotype among the classes of meat showed a predominant distribution of serotypes 1/2a, 1/2b, and 4b in chicken, while serotype 1/2c was dominant in pork. A total of nine cases considered to be due to persistence and/or cross-contamination were found. Most of the strains involved in persistence and/or cross-contamination were of serotypes 1/2c or 4b. These results suggest that contamination in retailed meat in Japan is at almost the same level as in other countries and that chicken has the highest potential as a source of contamination and infection. In addition, we suggest that the ecological niche of serotype 1/2c is distinct from those of 1/2a, 1/2b, and 4b, which may explain why human hosts have less opportunity to be exposed to serotype 1/2c and why there is a lower rate of isolation of this serotype from cases of human listeriosis.
Yoshitsugu Ochiai; Fumiya Yamada; Otgonchimeg Batmunkh; Mariko Mochizuki; Takashi Takano; Ryo Hondo; Fukiko Ueda
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of food protection     Volume:  73     ISSN:  0362-028X     ISO Abbreviation:  J. Food Prot.     Publication Date:  2010 Sep 
Date Detail:
Created Date:  2010-09-10     Completed Date:  2010-11-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7703944     Medline TA:  J Food Prot     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1688-93     Citation Subset:  IM    
Department of Veterinary Science, Nippon Veterinary and Life Sciences University, Musashino, Tokyo, Japan.
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MeSH Terms
Colony Count, Microbial
Consumer Product Safety
Food Contamination / analysis*
Food Microbiology*
Japan / epidemiology
Listeria monocytogenes / classification,  isolation & purification*
Meat / microbiology*
Species Specificity

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