Abstract
Raw milk in southern Ontario frequently contains Yersinia enterocolitica. The potential for transmission of this organism by cheese manufactured from unpasteurized milk was evaluated by examination of milk and cheese curd samples from cheese manufacturing plants and finished cheddar and Italian cheeses. The incidence of Y. enterocolitica was lower in cheese curd samples (9.2%) than in raw milk (18.2%). Most of the curd samples showed a positive phosphatase test, indicating production from raw milk. One curd sample yielded Y. enterocolitica after 4 weeks of storage at 4 degrees C but was negative after 8 weeks. All samples of cheddar and Italian cheeses, most of which showed a positive phosphatase test, were negative for Y. enterocolitica. One out of 265 samples (0.4%) of pasteurized fluid dairy products contained Y. enterocolitica.
Full text
PDF
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Asakawa Y., Akahane S., Kagata N., Noguchi M., Sakazaki R. Two community outbreaks of human infection with Yersinia enterocolitica. J Hyg (Lond) 1973 Dec;71(4):715–723. doi: 10.1017/s002217240002297x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hamdan I. Y., Mikolajcik E. M. Acidolin: an antibiotic produced by Lactobacillus acidophilus. J Antibiot (Tokyo) 1974 Aug;27(8):631–636. doi: 10.7164/antibiotics.27.631. [DOI] [PubMed] [Google Scholar]
- Inoue M., Kurose M. Isolation of Yersinia enterocolitica from cow's intestinal contents and beef meat. Nihon Juigaku Zasshi. 1975 Feb;37(1):91–93. doi: 10.1292/jvms1939.37.91. [DOI] [PubMed] [Google Scholar]
- Schiemann D. A., Toma S. Isolation of Yersinia enterocolitica from raw milk. Appl Environ Microbiol. 1978 Jan;35(1):54–58. doi: 10.1128/aem.35.1.54-58.1978. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Szita J., Svidró A. A five-year survey of human Yersinia enterocolitica infections in Hungary. Acta Microbiol Acad Sci Hung. 1976;23(2):191–203. [PubMed] [Google Scholar]
- Toma S., Deidrick V. R. Isolation of Yersinia enterocolitica from swine. J Clin Microbiol. 1975 Dec;2(6):478–481. doi: 10.1128/jcm.2.6.478-481.1975. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Tsubokura M., Otsuki K., Itagaki K. Studies on Yersinia enterocolitica. I. Isolation of Y. enterocolitica from swine. Nihon Juigaku Zasshi. 1973 Oct;35(5):419–424. doi: 10.1292/jvms1939.35.419. [DOI] [PubMed] [Google Scholar]
- Zenyoji H., Maruyama T., Sakai S., Kimura S., Mizuno T. An outbreak of enteritis due to Yersinia enterocolitica occurring at a junior high school. Jpn J Microbiol. 1973 May;17(3):220–222. doi: 10.1111/j.1348-0421.1973.tb00730.x. [DOI] [PubMed] [Google Scholar]