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Human Escherichia coli O157:H7 Genetic Marker in Isolates of Bovine Origin
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Aug 2004
Source: Emerg Infect Dis. 10(8):1482-1485.
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Alternative Title:Emerg Infect Dis
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Description: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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