Publications

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isolation of listeria monocytogenes from roof rats (rattus rattus) in buildings in tokyo. 19911832043
the incidence of listeria species in retail foods in japan.meat, fish and vegetable products obtained at retail shops in or around tokyo were examined for listeria contamination. listeria spp. were isolated from 43 (56.6%) out of 76 samples of meat products. l. monocytogenes occurred in 26 (34%) of the samples, l. monocytogenes was isolated from 7 (6.1%) out of 114 samples of fish and fish products including 'ready-to-eat' foods. listeria was not isolated from any of 21 samples of vegetable and vegetable product including 'ready-to-eat' foods investigat ...19921445759
prevalence of listeria monocytogenes in retailed meat in the tokyo metropolitan area.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 ...201020828477
genetic classification of listeria monocytogenes serotype 4b strains, including epidemic clones, isolated from retail meat in the tokyo metropolitan area.a food-borne pathogen, listeria monocytogenes serotype 4b, has been frequently isolated from patients with listeriosis, and numerous outbreaks of listeriosis are associated with this serotype. in the present study, we performed subtyping of l. monocytogenes serotype 4b strains on the basis of genetic analyses. thirty-four isolates of serotype 4b were classified into 8 genotypes, namely genotypes 12, 15, 16, 17, 18, 23, 24, and 25, on the basis of the sequence for the partial iap gene. genetic an ...201425056070
prevalence and contamination levels of listeria monocytogenes in ready-to-eat foods in tokyo, japan.we surveyed prevalence and contamination levels of listeria monocytogenes in ready-to-eat foods between 2000 and 2012 in tokyo. l. monocytogenes was isolated from 52 (1.7%) out of 2,980 samples. comparing the prevalence in the study period, 2.2% were positive in the former period (2000-2005) and 1.2% in the latter (2006-2012). using the most probable number (mpn) technique, 32 samples were contaminated with fewer than 0.3 l. monocytogenes/g, 10 samples with 0.3-1.0/g and 4 samples with more than ...201627000951
incidence of listeria monocytogenes in raw seafood products in japanese retail stores.the incidence of listeria monocytogenes in raw fish, shellfish, and fish roe was investigated in seafood products collected from randomly selected retail stores in and around tokyo, japan. of the 10 samples of 208 examined found positive for l. monocytogenes by mini-vidas lmo, seven were fish roe (cod, salmon) and three were minced tuna. three serotypes (1/2a, 1/2b, 3b) were detected among the isolated strains; serotype 1/2a was predominant (8 of 10).200515726989
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