Phylogenetic tree of measles H gene sequences detected in Canada in 2013 (n = 43)
WHO reference sequences (10) are shown in bold, italic font. Canadian sequences are shown in regular font and are identified by their WHO name, which indicates province and week of rash onset or specimen collection. Cases of imported virus are identified with “ex:< 3 letter country code>.” Outbreaks are represented by colour fonts: sequences with the same colour, within the same genotype, are from the same outbreak.