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. 1994 Jul;32(7):1685–1690. doi: 10.1128/jcm.32.7.1685-1690.1994

Molecular characterization of Vibrio cholerae O1 strains by pulsed-field gel electrophoresis.

D N Cameron 1, F M Khambaty 1, I K Wachsmuth 1, R V Tauxe 1, T J Barrett 1
PMCID: PMC263762  PMID: 7929758

Abstract

Pulsed-field gel electrophoresis (PFGE) was performed on 180 isolates of Vibrio cholerae serogroup O1 representing 6 different multilocus enzyme electrophoresis (MEE) types and 27 rRNA restriction fragment length polymorphism types (ribotypes). Isolates were digested with the restriction enzyme NotI and were separated into 63 patterns on the basis of differences in band arrangements. In general, strains which were different by MEE or ribotyping also had different PGFE patterns. PFGE identified individual strains within a single MEE type or ribotype; isolates with one PFGE pattern were less frequently distinguished by ribotyping. All V. cholerae O1 isolates tested from the Latin American epidemic were indistinguishable by their MEE, ribotype, or PFGE patterns. PFGE could further distinguish strains of this same ribotype isolated in Africa, Europe, the South Pacific, or Southeast Asia. Although both MEE and PFGE could identify the strain from the Latin American epidemic, PFGE was more rapid and less labor intensive. PFGE also distinguished nontoxigenic isolates endemic to the U.S. Gulf Coast from unrelated nontoxigenic isolates. In the present study PFGE was more discriminating than other previously described subtyping assays for V. cholerae O1 and appears to be a useful epidemiologic tool.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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