Measles & Rubella Weekly Monitoring Report - Week 46, 2017: November 12 to November 18, 2017 

Figure 1: Number of cases of measles (n=45) and rubella (n=0), by week of rash onset, as reported to the Canadian Measles/ Rubella Surveillance System (CMRSS) and Measles and Rubella Surveillance System (MARS), for the period ending November 18, 2017.

Geographic distribution

There are currently no active^{Figure 2 - Footnote *} cases of measles reported in Canada (Figure not shown).

There are no reported active cases of rubella in Canada (Figure not shown).

Laboratory summary

Measles

To date in 2017, 37 of the 45 reported measles cases (82%) have had specimens available for genotyping and the genotypes were B3 (n=8) and D8 (n=29) (Figure 2).

Figure 2: Distribution of measles genotypes detected in 2017 (n=37) by week^{Figure 3 - Footnote †} of rash onset.

The current global distribution of measles genotypes can be found on the WHO Measles Surveillance website.

For information regarding the interpretation and use of measles genotyping (including a discussion of genotypes and sequence variants), refer to Hiebert J and Severini A. Canada Communicable Disease Report. 2014; 40-12: 257- 260.