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Phylogeography and global expansion of genotype 4.3.1 (H58) Salmonella Typhi isolates
Timed phylogenetic tree of genotype 4.3.1 S Typhi isolates. The branch lengths are scaled in years and are coloured according to the location of the most probable ancestor of descendant nodes. The scale bar indicates nucleotide substitutions per site. AZI-R=azithromycin resistant. MDR=multidrug resistant. QRDR=quinolone-resistance determining region. XDR=extensively drug-resistant.
