Molecular evidence of clonality amongst Vibrio cholerae O1 biotype El Tor during an outbreak in Malaysia

Vadivelu, Jamuna and Iyer, Lakshmy and Kshatriya, B.M. and Puthucheary, Savithri Devi (2000) Molecular evidence of clonality amongst Vibrio cholerae O1 biotype El Tor during an outbreak in Malaysia. Epidemiology and Infection, 124 (1). pp. 25-30. ISSN 0950-2688, DOI

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Forty-three clinical strains of V. cholerae O1 biotype El Tor were isolated between 3 May and 10 June 1998 during an outbreak in the metropolitan area of Kuala Lumpur and its suburbs. With the exception of three Inaba strains that were restricted to three members of a family, all the others belonged to the Ogawa serotype. The strains were analysed for clonality using ribotyping and pulsed-field gel electrophoresis (PFGE). Two ribotypes, V/B21a and B27, were identified among 40 Ogawa isolates using BglI restriction endonuclease. Ribotype V/B21a has been described previously from Taiwan and Colombia and several Asian countries while B27 has been reported among isolates from Senegal. The three Inaba strains belonged to one ribotype, designated type A, not previously reported. PFGE analysis using NotI revealed that all isolates within a ribotype had identical profiles demonstrating clonality amongst the strains. Dice coefficient analysis of the two Ogawa genotypes revealed 89% similarity on ribotype patterns and 91.3% on PFGE profiles. Ribotype V/B21a isolates were associated with cases from dispersed areas of Kuala Lumpur and its suburbs while ribotype B27 was restricted to cases from one particular area suggesting a common-source outbreak.

Item Type: Article
Uncontrolled Keywords: Bacterial Typing Techniques; Cholera; Disease Outbreaks; DNA, Bacterial; DNA, Ribosomal; Electrophoresis, Gel, Pulsed-Field; Humans; Malaysia; Vibrio cholerae
Subjects: R Medicine
Divisions: Faculty of Medicine
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 12 Apr 2021 02:37
Last Modified: 12 Apr 2021 02:37

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