Figure 3. Phylogenetic tree of measles N-450 sequences detected in Canada in 2015 (n=56).

NOTE: Relevant WHO reference sequences (9) are shown in bold, italic font. Named strains, assigned in the WHO measles sequence database (MeaNS) (9), matching any Canadian sequences are shown in italics. Canadian sequences are shown in regular font and are identified by their WHO name which indicates province and week of rash onset. Cases with travel history are identified with “ex:<3 letter country code>.” Outbreaks are represented by a single sequence and are tagged with their outbreak number (Appendix). The number of identical sequences identified in the outbreak is provided in brackets. The remaining sequences (without an outbreak number listed) are from sporadic cases (n=6). The scale bar indicates number of nucleotide differences between branches.