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Molecular epidemiological survey of Listeria monocytogenes in seafood and seafood-processing plants.

Author(s) : RØVIK L. M., AASE B., ALVESTAD T., et al.

Type of article: Article

Summary

To evaluate the role of seafoods in the epidemiology of human listeriosis and the role of the processing environment as a source of Listeria monocytogenes in seafood products, 305 L. monocytogenes isolates were characterized by multilocus enzyme electrophoresis using 21 genetic loci and restriction enzyme analysis of total DNA. Forty-four isolates were recovered from patients in Norway; 93 were isolated from seafoods, seafood-processing environments, and seawater from 55 different producers; and the remaining 168 isolates originated from six seafood-processing plants and one transport terminal examined in detail for L. monocytogenes. Four of electrophoretic types were responsible of the listeriosis cases in 1992 to 1996. Isolates from Norwegian seafoods and processing environments do not offer a niche for specific L. monocytogenes strains. Isolates from individual processing plants were genetically more homogenous. The isolation of identical subclones of L. monocytogenes from both human patients and seafoods, including ready-to-eat products, suggests that such products may have been possible sources for listeriosis cases in Norway.

Details

  • Original title: Molecular epidemiological survey of Listeria monocytogenes in seafood and seafood-processing plants.
  • Record ID : 2002-0274
  • Languages: English
  • Source: Appl. environ. Microbiol. - vol. 66 - n. 11
  • Publication date: 2000/11

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