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The use of alkalinity and incubation at 9 °C for improved recovery of Yersinia spp. from faeces

  • Melody H. Greenwood (a1) and W. L. Hooper (a1)

Summary

Recovery of Yersinia enterocolitica and related strains from faecal samples enriched in 1% buffered peptone water (pH 7·2) and incubated at 4 °C for 17–21 days was compared with recovery from 1% peptone water buffered to pH 8·0 and incubation over the temperature range 4–26°C. Best recovery was obtained by use of the alkaline medium incubated at 9°C. Greatest recovery was obtained after incubation for 10–14 days, but most strains (> 75%) were recovered after 1 week.

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References

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Aulisio, C. C. G., Mehlman, I. J. & Sanders, A. C. (1980). Alkali method for rapid recovery of Yersinia enterocolitica and Yersinia pseudotuberculosis from foods. Applied and Environmental Microbiology 39, 135140.
Greenwood, M. H. & Hooper, W. L. (1985). Yersinia species in food and related environments. Food Microbiology 2, 263269.
Greenwood, M. H. & Hooper, W. L. (1987). Human carriage of Yersinia spp. Journal of Medical Microbiology 23, 345348.
Lewis, A. M. & Chattopadhyay, B. (1986). Faecal carriage rate of Yersinia species. Journal of Hygiene 97, 281287.
Ratnam, S., Looi, C. L. & Patel, T. R. (1983). Lack of efficacy of alkali treatment for isolation of Yersinia enterocolitica from faeces. Journal of Clinical Microbiology 18, 10921097.
Schiemann, D. A. & Olson, S. A. (1984). Antagonism by gram-negative bacteria to growth of Yersinia enterocolitica in mixed cultures. Applied and Environmental Microbiology 48, 539544.
Weissfeld, A. S. & Sonnenwirth, A. C. (1982). Rapid isolation of Yersinia spp. from faeces. Journal of Clinical Microbiology 15, 508510.
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Epidemiology & Infection
  • ISSN: 0950-2688
  • EISSN: 1469-4409
  • URL: /core/journals/epidemiology-and-infection
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