Whole genome-sequencing and phylogenetic analysis of a historical collection of Bacillus anthracis strains from Danish cattle

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Abstract

© 2015 Derzelle et al.Bacillus anthracis, the causative agent of anthrax, is known as one of the most genetically monomorphic species. Canonical single-nucleotide polymorphism (SNP) typing and wholegenome sequencing were used to investigate the molecular diversity of eleven B. anthracis strains isolated from cattle in Denmark between 1935 and 1988. Danish strains were assigned into five can SNP groups or lineages, i.e. A.Br.001/002 (n = 4), A.Br.Ames (n = 2), A.Br.008/011 (n = 2), A.Br.005/006 (n = 2) and A.Br.Aust94 (n = 1). The match with the A. Br.Ames lineage is of particular interest as the occurrence of such lineage in Europe is demonstrated for the first time, filling an historical gap within the phylogeography of the lineage. Comparative genome analyses of these strains with 41 isolates from other parts of the world revealed that the two Danish A.Br.008/011 strains were related to the heroin-associated strains responsible for outbreaks of injection anthrax in drug users in Europe. Eight novel diagnostic SNPs that specifically discriminate the different sub-groups of Danish strains were identified and developed into PCR-based genotyping assays. Copyright:

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Derzelle, S., Girault, G., Kokotovic, B., & Angen, Ø. (2015). Whole genome-sequencing and phylogenetic analysis of a historical collection of Bacillus anthracis strains from Danish cattle. PLoS ONE, 10(8). https://doi.org/10.1371/journal.pone.0134699

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