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. 2011 Jun;17(6):1110-2.
doi: 10.3201/eid/1706.101778.

Worldwide distribution of major clones of Listeria monocytogenes

Viviane Chenal-Francisque  1 , Jodie Lopez, Thomas Cantinelli, Valerie Caro, Coralie Tran, Alexandre Leclercq, Marc Lecuit, Sylvain Brisse
Affiliations

Worldwide distribution of major clones of Listeria monocytogenes

Viviane Chenal-Francisque et al. Emerg Infect Dis. 2011 Jun.

Abstract

Listeria monocytogenes is worldwide a pathogen, but the geographic distribution of clones remains largely unknown. Genotyping of 300 isolates from the 5 continents and diverse sources showed the existence of few prevalent and globally distributed clones, some of which include previously described epidemic clones. Cosmopolitan distribution indicates the need for genotyping standardization.

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Figures

Figure
Figure
Number of isolates from 7 world regions where the most prevalent clones of Listeria monocytogenes are found.
Figure A1
Figure A1
Genetic relationships among 660 Listeria monocytogenes isolates. The graph is a minimum spanning tree based on allelic profiles by using BioNumerics version 6.1 (Applied-Maths, Sint-Martens-Latem, Belgium). The 300 isolates of this study are in blue; the 360 L. monocytogenes isolates and reference strains of our earlier study (12) are in white and gray, respectively. Each circle represents a multilocus sequence typing genotype (ST), the size of which is related to the number of isolates (see legend). Clones, defined as clonal complexes [CC], are composed of groups of STs linked with a single gene difference, denoted as bold lines (see legend); clone number is indicated for the major clones. Links with >2 mismatches are unreliable because many alternatives may exist; links with 7 mismatches are not shown.
See this image and copyright information in PMC

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