Acknowledgements This research was supported by National Science Foundation CAREER award DEB-0844409
to E.F.B. The authors declare no conflicts of interest. References 1. Faruque SM, Sack DA, Sack RB, Colwell RR, Takeda Y, Nair GB: Emergence and evolution of Vibrio cholerae O139. Proc Natl Acad Sci USA 2003,100(3):1304–1309.PubMedCrossRef 2. Faruque SM, Chowdhury N, Kamruzzaman M, Dziejman M, Rahman MH, Sack DA, Nair GB, Mekalanos JJ: Genetic diversity and virulence potential of environmental Vibrio cholerae population in a cholera-endemic area. Proc Natl Acad Sci USA 2004,101(7):2123–2128.PubMedCrossRef 3. Burrus V, Quezada-Calvillo R, Marrero J, Waldor EPZ015938 nmr M: SXT-related integrating conjugative element in New World Vibrio cholerae . Appl Environ Microbiol 2006, 72:3054–3057.PubMedCrossRef 4. Nusrin S, Gil AI, Bhuiyan
NA, Safa A, Asakura M, Lanata CF, Hall E, Miranda H, Huapaya B, Vargas GC, et al.: Peruvian Vibrio cholerae O1 El Tor strains possess a distinct region in the Vibrio seventh pandemic island-II that differentiates them from the prototype seventh pandemic El Tor strains. J Med Microbiol 2009, 58:342–354.PubMedCrossRef 5. Tay C, Reeves P, Lan R: Importation of the major pilin TcpA gene and frequent recombination drive the divergence of the Vibrio pathogenicity island in Vibrio cholerae . FEMS Microbiol selleck Lett 2008, 289:210–218.PubMedCrossRef 6. Ghosh R, Nair GB, Tang L, Morris JG, Sharma NC, Ballal M, Garg P, Ramamurthy T, Stine OC: Epidemiological study of Vibrio cholerae using buy CRT0066101 variable number of tandem repeats. FEMS Microbiol Lett 2008,288(2):196–201.PubMedCrossRef 7. Gonzalez-Fraga S, Pichel M, Binsztein N, Johnson JA, Morris JG Jr, Stine OC: Lateral gene transfer of O1 serogroup
encoding genes of Vibrio cholerae. FEMS Microbiol Lett 2008,286(1):32–38.PubMedCrossRef 8. Chun J, Grim CJ, Hasan NA, Lee JH, Choi SY, Haley BJ, Taviani E, Jeon YS, Kim DW, Lee JH, et al.: Comparative genomics reveals mechanism for short-term and long-term clonal transitions in pandemic Vibrio cholerae. Proc Natl Acad Sci USA 2009,106(36):15442–1547.PubMedCrossRef 9. Grim CJ, Hasan NA, Taviani E, Haley B, Chun J, Brettin TS, Bruce DC, Detter JC, Han CS, Chertkov O, et al.: Genome sequence of hybrid Vibrio cholerae O1 check details MJ-1236, B-33, and CIRS101 and comparative genomics with V. cholerae. J Bacteriol 2010,192(13):3524–3533.PubMedCrossRef 10. Lam C, Octavia S, Reeves P, Wang L, Lan R: Evolution of seventh cholera pandemic and origin of 1991 epidemic, Latin America. Emerg Infect Dis 2010, 16:1130–1132.PubMedCrossRef 11. Morita M, Ohnishi M, Arakawa E, Yamamoto S, Nair GB, Matsushita S, Yokoyama K, Kai A, Seto K, Watanabe H, et al.