Classical RS1 and environmental RS1 elements in Vibrio Chalerae 01 El tor strains harbouring a tandem repeat of CTX prophage: revisiting Mozambique in 2005

Young Choi, Je Lee, Eun Jin Kim, Hye Ri Lee, Yoon-Seong Jeon, Lorenz Von Seidlein, Jaqueline Deen, M Ansaruzzaman, G Marcelino E S Lucas, Avertino Barreto, Francisco Songane, Catarina Mondlane, G Balakrish Nair, Cecil Czerkinsky, John D Clemens, Jongsik Chun, Dong Wook Kim

Research output: Contribution to journalArticle

Abstract

Currently, Vibrio cholerae O1 serogroup biotype El Tor strains producing classical type cholera toxin (altered strains or El Tor variants) are prevalent in Asia and in Mozambique. Mozambican strains collected in 2004 contained a tandem repeat of CTX prophage on the small chromosome and each CTX prophage harboured the classical rstR and classical ctxB. We found that the majority of the strains collected in 2005 in Mozambique contained extra elements on the large chromosome in addition to the tandem repeat of CTX prophage on the small chromosome. New type RS1 elements RS1cla and RS1env, and a CTXenv with rstR env and the classical ctxB were identified on the large chromosome of the Mozambican isolates collected in 2005.
Original languageEnglish
Pages (from-to)302-308
Number of pages7
JournalJournal of Medical Microbiology
Volume59
Issue number3
DOIs
Publication statusPublished - 1 Mar 2010
Externally publishedYes

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