Abstract
An outbreak associated with Streptococcus suis infection in humans emerged in Sichuan province, China in 2005. The outbreak is atypical for the apparent large number of human cases, high fatality rate and geographical spread. To determine whether the bacterium has changed, we compared both human and animal isolates from the Sichuan outbreak with those collected previously within China and in other countries using whole genome PCR scanning (WGPScaning) comparative sequencing of several known virulence factor genes and multilocus sequence typing (MLST) analysis. WGPScanning analysis showed that all primer pairs yielded PCR products of the expected sizes in all four strains tested. The nucleotide sequences of all the detected virulence factor genes are identical in the four strains and MLST results showed that the four isolates studied and reference strain all belonged to the ST1 complex. No new genetic changes were found in the genome structure of the isolates from this Sichuan outbreak.
Publication types
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Comparative Study
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Research Support, Non-U.S. Gov't
MeSH terms
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Genome, Bacterial / genetics*
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Molecular Sequence Data
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Polymerase Chain Reaction
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Streptococcus suis / genetics*
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Streptococcus suis / pathogenicity
Associated data
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GENBANK/DQ410817
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GENBANK/DQ410818
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