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Human isolates of Listeria monocytogenes in Sweden during half a century (1958-2010)
Örebro University, School of Hospitality, Culinary Arts & Meal Science.
Örebro University, School of Hospitality, Culinary Arts & Meal Science.ORCID iD: 0000-0001-6903-5322
Örebro University, School of Health and Medical Sciences, Örebro University, Sweden. Department of Restaurant and Culinary Arts, Örebro University, Grythyttan, Sweden.
Department of Environmental Assessment, SLU, Uppsala, Sweden.
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2014 (English)In: Epidemiology and Infection, ISSN 0950-2688, E-ISSN 1469-4409, Vol. 142, p. 2251-2260Article in journal (Refereed) Published
Abstract [en]

Isolates of Listeria monocytogenes (n=932) isolated in Sweden during 1958–2010 from human patients with invasive listeriosis were characterized by serotyping and pulsed-field gel electrophoresis (PFGE) (AscI). Of the 932 isolates, 183 different PFGE types were identified, of which 83 were each represented by only one isolate. In all, 483 serovar 1/2a isolates were distributed over 114 PFGE types; 90 serovar 1/2b isolates gave 32 PFGE types; 21 serovar 1/2c isolates gave nine PFGE types; three serovar 3b isolates gave one PFGE type; and, 335 serovar 4b isolates gave 31 PFGE types. During the 1980s in Sweden, several serovar 4b cases were associated with the consumption of European raw soft cheese. However, as cheese-production hygiene has improved, the number of 4b cases has decreased. Since 1996, serovar 1/2a has been the dominant L. monocytogenes serovar in human listeriosis in Sweden. Therefore, based on current serovars and PFGE types, an association between human cases of listeriosis and the consumption of vacuum-packed gravad and cold-smoked salmon is suggested.

Place, publisher, year, edition, pages
2014. Vol. 142, p. 2251-2260
Keywords [en]
Cheese, Listeria monocytogenes, PFGE, serotyping, salmon
National Category
Occupational Health and Environmental Health
Research subject
Culinary Arts and Meal Science
Identifiers
URN: urn:nbn:se:oru:diva-40067DOI: 10.1017/S0950268813003385ISI: 000344921000003PubMedID: 24480252Scopus ID: 2-s2.0-84909991349OAI: oai:DiVA.org:oru-40067DiVA, id: diva2:775122
Note

Funding Agency:

Research Foundation of Ivar and Elsa Sandberg 

Available from: 2014-12-30 Created: 2014-12-30 Last updated: 2018-01-11Bibliographically approved

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Lopez-Valladares, GloriaTham, WilhelmParihar, Vishal SinghDanielsson-Tham, Marie-Louise

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Lopez-Valladares, GloriaTham, WilhelmParihar, Vishal SinghDanielsson-Tham, Marie-Louise
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School of Hospitality, Culinary Arts & Meal ScienceSchool of Health and Medical Sciences, Örebro University, Sweden
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Epidemiology and Infection
Occupational Health and Environmental Health

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