A comparative study of clinical and food isolates of Listeria monocytogenes and related species

Szabo E.A. and Desmarchelier P.M. (1990) A comparative study of clinical and food isolates of Listeria monocytogenes and related species. Epidemiology and Infection, 105 2: 245-254. doi:10.1017/S0950268800047853


Author Szabo E.A.
Desmarchelier P.M.
Title A comparative study of clinical and food isolates of Listeria monocytogenes and related species
Journal name Epidemiology and Infection   Check publisher's open access policy
ISSN 1469-4409
Publication date 1990
Sub-type Article (original research)
DOI 10.1017/S0950268800047853
Volume 105
Issue 2
Start page 245
End page 254
Total pages 10
Subject 2725 Infectious Diseases
2713 Epidemiology
2403 Immunology
2739 Public Health, Environmental and Occupational Health
Abstract Ninety-six isolates of presumptive or confirmed Listeria monocytogenes were obtained from local clinical (30 isolates) or food laboratories (66 isolates). Minimal biochemical analysis identified only 80% of these isolates as L. monocytogenes the remaining included L. seeligeri, 1%, or the non-haemolytic L. innocua, 19%. The 27 clinical and 50 food isolates, mainly from meat products, frozen confectionaries, and cheeses, confirmed as L. monocytogenes were compared biochemically and serologically. Twenty-one isolates, including some strains of L. innocua and L. seeligeri, were examined for pathogenicity in immunocompromized mice and 44 typed using bacterial restriction endonuclease DNA analysis (BRENDA). Only isolates of L. monocytogenes were found to be pathogenic. Biovar-typing of the isolates was unreliable and provided poor discrimination. Serogroups 1/2 and 4 predominated among clinical and food isolates and BRENDA provided better discrimination among isolates. Ten stable and reproducible restriction patterns were observed among the Listeria sp. isolates studied. Overall, a combination of techniques gave the best discrimination and indicated their potential for use as epidemiological tools.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
 
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