Gilmour_2010_BMC.Genomics_11_120

Reference

Title : High-throughput genome sequencing of two Listeria monocytogenes clinical isolates during a large foodborne outbreak - Gilmour_2010_BMC.Genomics_11_120
Author(s) : Gilmour MW , Graham M , Van Domselaar G , Tyler S , Kent H , Trout-Yakel KM , Larios O , Allen V , Lee B , Nadon C
Ref : BMC Genomics , 11 :120 , 2010
Abstract : BACKGROUND: A large, multi-province outbreak of listeriosis associated with ready-to-eat meat products contaminated with Listeria monocytogenes serotype 1/2a occurred in Canada in 2008. Subtyping of outbreak-associated isolates using pulsed-field gel electrophoresis (PFGE) revealed two similar but distinct AscI PFGE patterns. High-throughput pyrosequencing of two L. monocytogenes isolates was used to rapidly provide the genome sequence of the primary outbreak strain and to investigate the extent of genetic diversity associated with a change of a single restriction enzyme fragment during PFGE.
RESULTS: The chromosomes were collinear, but differences included 28 single nucleotide polymorphisms (SNPs) and three indels, including a 33 kbp prophage that accounted for the observed difference in AscI PFGE patterns. The distribution of these traits was assessed within further clinical, environmental and food isolates associated with the outbreak, and this comparison indicated that three distinct, but highly related strains may have been involved in this nationwide outbreak. Notably, these two isolates were found to harbor a 50 kbp putative mobile genomic island encoding translocation and efflux functions that has not been observed in other Listeria genomes.
CONCLUSIONS: High-throughput genome sequencing provided a more detailed real-time assessment of genetic traits characteristic of the outbreak strains than could be achieved with routine subtyping methods. This study confirms that the latest generation of DNA sequencing technologies can be applied during high priority public health events, and laboratories need to prepare for this inevitability and assess how to properly analyze and interpret whole genome sequences in the context of molecular epidemiology.
ESTHER : Gilmour_2010_BMC.Genomics_11_120
PubMedSearch : Gilmour_2010_BMC.Genomics_11_120
PubMedID: 20167121
Gene_locus related to this paper: lismo-LMO0110 , lismo-LMO0493 , lismo-LMO0580 , lismo-LMO0857 , lismo-LMO0950 , lismo-LMO0951 , lismo-LMO0977 , lismo-LMO1128 , lismo-LMO1258 , lismo-LMO1674 , lismo-LMO2089 , lismo-LMO2433 , lismo-LMO2450 , lismo-LMO2452 , lismo-LMO2578 , lismo-LMO2755 , lismo-metx

Citations formats

Gilmour MW, Graham M, Van Domselaar G, Tyler S, Kent H, Trout-Yakel KM, Larios O, Allen V, Lee B, Nadon C (2010)
High-throughput genome sequencing of two Listeria monocytogenes clinical isolates during a large foodborne outbreak
BMC Genomics 11 :120

Gilmour MW, Graham M, Van Domselaar G, Tyler S, Kent H, Trout-Yakel KM, Larios O, Allen V, Lee B, Nadon C (2010)
BMC Genomics 11 :120