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Phylogenetic tree of 7th pandemic Vibrio cholerae. (Top) A phylogenetic tree of non-recombinogenic regions from 1,270 strains of O1 El Tor 7th pandemic V. cholerae. Tracks represent continent (inner) and year (outer) of isolation. Tree scale represents single-nucleotide polymorphisms (SNPs) per genome. (Bottom) Inset focused on the Haiti clade along with recent Asian isolates.
