Human Escherichia coli O157:H7 genetic marker in isolates of bovine origin

Jeffrey T. LeJeune; Stephen T. Abedon; Kaori Takemura; Nicholas P. Christie; Srinand Sreevatsan

doi:10.3201/eid1008.030784

Human Escherichia coli O157:H7 genetic marker in isolates of bovine origin

Jeffrey T. LeJeune, Stephen T. Abedon, Kaori Takemura, Nicholas P. Christie, Srinand Sreevatsan

Veterinary Population Medicine

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Abstract

The antiterminator Q gene of bacteriophage 933W (Q₉₃₃) was identified upstream of the stx2 gene in 90% of human disease-origin Escherichia coli O157:H7 isolates and in 44.5% of bovine isolates. Shiga toxin production was higher in Q₉₃₃-positive isolates than Q₉₃₃-negative isolates. This genetic marker may provide a useful molecular tool for epidemiologic studies.

Original language	English (US)
Pages (from-to)	1482-1485
Number of pages	4
Journal	Emerging infectious diseases
Volume	10
Issue number	8
DOIs	https://doi.org/10.3201/eid1008.030784
State	Published - Aug 2004

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abstract = "The antiterminator Q gene of bacteriophage 933W (Q933) was identified upstream of the stx2 gene in 90\% of human disease-origin Escherichia coli O157:H7 isolates and in 44.5\% of bovine isolates. Shiga toxin production was higher in Q933-positive isolates than Q933-negative isolates. This genetic marker may provide a useful molecular tool for epidemiologic studies.",

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AU - LeJeune, Jeffrey T.

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AU - Takemura, Kaori

AU - Christie, Nicholas P.

AU - Sreevatsan, Srinand

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AB - The antiterminator Q gene of bacteriophage 933W (Q933) was identified upstream of the stx2 gene in 90% of human disease-origin Escherichia coli O157:H7 isolates and in 44.5% of bovine isolates. Shiga toxin production was higher in Q933-positive isolates than Q933-negative isolates. This genetic marker may provide a useful molecular tool for epidemiologic studies.

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Human Escherichia coli O157:H7 genetic marker in isolates of bovine origin

Abstract

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