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Detection of Streptococcus equi subspecies equi using a triplex qPCR assay.


ABSTRACT: Genome sequencing data for Streptococcus equi subspecies equi and zooepidemicus were used to develop a novel diagnostic triplex quantitative PCR (qPCR) assay targeting two genes specific to S. equi (eqbE and SEQ2190) and a unique 100 base pair control DNA sequence (SZIC) inserted into the SZO07770 pseudogene of S. zooepidemicus strain H70. This triplex strangles qPCR assay can provide results within 2h of sample receipt, has an overall sensitivity of 93.9% and specificity of 96.6% relative to the eqbE singlex assay and detects S. equi at levels below the threshold of the culture assay, even in the presence of contaminating bacteria.

SUBMITTER: Webb K 

PROVIDER: S-EPMC3611602 | biostudies-literature | 2013 Mar

REPOSITORIES: biostudies-literature

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Detection of Streptococcus equi subspecies equi using a triplex qPCR assay.

Webb Katy K   Barker Colin C   Harrison Tihana T   Heather Zoe Z   Steward Karen F KF   Robinson Carl C   Newton J Richard JR   Waller Andrew S AS  

Veterinary journal (London, England : 1997) 20120810 3


Genome sequencing data for Streptococcus equi subspecies equi and zooepidemicus were used to develop a novel diagnostic triplex quantitative PCR (qPCR) assay targeting two genes specific to S. equi (eqbE and SEQ2190) and a unique 100 base pair control DNA sequence (SZIC) inserted into the SZO07770 pseudogene of S. zooepidemicus strain H70. This triplex strangles qPCR assay can provide results within 2h of sample receipt, has an overall sensitivity of 93.9% and specificity of 96.6% relative to th  ...[more]

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