Characterization of Human Invasive Isolates of Listeria monocytogenes in Sweden 1986-2007

Abstract

Since 1986, 68% of the Listeria monocytogenes isolates from human cases of invasive listeriosis in Sweden are available for retrospective Studies. The aim of the present Study was to characterize 601 human invasive isolates of L. monocytogenes in Sweden from 1986 to 2007 by using serotyping and pulsed-field gel electrophoresis. Since 1996, serovar 4b was permanently reduced to the second or third most common serovar in human cases in Sweden. During the latter period, 2000-2007, only 13% belonged to serovar 4b and 71% to 1/2a. The dendrogram, based on pulsovars, reveals two Clusters with different serovars. Cluster I exhibits serovars 4b and 1/2b, whereas cluster 2 consists of serovar 1/2a. Serovar 1/2a seems to be more heterogeneous than serovar 4b.

Published in

Foodborne Pathogens and Disease
2008, volume: 5, number: 6, pages: 755-761
Publisher: MARY ANN LIEBERT INC

SLU Authors

• Helmersson, Seved

  • Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences
    

• Tham, Wilhelm

  • Örebro University

UKÄ Subject classification

Public Health, Global Health, Social Medicine and Epidemiology
Food Science

Publication identifier

• DOI: https://doi.org/10.1089/fpd.2008.0123

Permanent link to this page (URI)

https://res.slu.se/id/publ/78155