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Updated: Oct 9, 2026

Laboratory Techniques Used to Maintain and Differentiate Biotypes of Vibrio cholerae Clinical and Environmental Isolates
Published on: May 30, 2017
[Genetic markers of epidemic strains of Vibrio cholerae]
N I Smirnova1, O A Kirillina, V V Kutyrev
1Research Institute for Plaque Control Microbe, Saratov, Russia.
Abstract:
In this review new data on the key pathogenicity genes of V. cholerae are presented. As shown on the basis of the analysis of the latest information on the structure of the genomes of different V. cholerae strains, structural genes ctxAB coding cholera toxin may not serve as the only marker of epidemically dangerous strains. More complete and reliable information for the evaluation of the epidemic potential of V. cholerae isolated from the environment may be obtained by the simultaneous detection of 4 genetic markers: genes ctxAB, tcpA and hap coding, respectively, cholera toxin, toxin-corregulated adhesion pili and soluble hemagglutinin/protease, as well as regulatory virulence gene toxR.
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