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. 2016 Sep;22(9):1545–1553. doi: 10.3201/eid2209.151953

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This is a publication of the U.S. Government. This publication is in the public domain and is therefore without copyright. All text from this work may be reprinted freely. Use of these materials should be properly cited.

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The OJC-associated lineage of multidrug-resistant Shigella sonnei in context with other global lineages. These background (non-OJC) isolates were contemporaneously collected and selected on the basis of phage typing; that is, including diverse phage types, but focused on representing phage types associated with OJC outbreaks. The midpoint rooted maximum-likelihood phylogenetic tree shows the relationships of 437 sequences from study of travel- and community-based transmission of multidrug-resistant S. sonnei among international OJCs compared with 118 isolates from a global context database of previously defined lineages of S. sonnei. Lineages are labeled along branches. Adjacent tracks are colored according to the inlaid key and show epidemiologic features of the isolate (lane 1, sample designation; lane 2, country; lane 3, year of isolation). Year of isolation is colored on a continuous heat map scale for 1992–2014, shown by hash symbols (#). Scale bar indicates single-nucleotide polymorphisms. OJCs, Orthodox Jewish communities.