PCR for detection of cdt-III and the relative frequencies of cytolethal distending toxin variant-producing Escherichia coli isolates from humans and cattle.

Abstract excerpt

A PCR assay that uses primers whose sequences were obtained from the published sequence of the cdt-III gene was developed to determine the frequencies of the cdt-I, cdt-II, and cdt-III genes in Escherichia coli isolates from humans and animals. E. coli isolates producing cytolethal distending toxin (CDT) were infrequently detected. The cdt-I gene was preferentially detected in strains with the cnf1 gene, while...

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