Measles & Rubella Weekly Monitoring Report: February 14 to February 20, 2016 (week 7)
- In Canada, no new cases of measles or rubella were reported for week 7, 2016. However, one case of congenital rubella syndrome (CRS) was retrospectively reported by Ontario, for week 50, 2015.
- A total of 2 cases of measles, and 0 cases of rubella have been reported in Canada in 2016.
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During epidemiological week 7, 2016, no new cases of measles or rubella were reportedFootnote 1. It has been 4 epidemiological weeks since the last reported measles case (week 03, 2016), and 102 weeks since the last reported rubella case (week 10, 2014).
However, during the week 7 reporting cycle, one case of congenital rubella syndrome (CRS) was retrospectively reported by Ontario, for week 50, 2015 and is still being actively followed.
The year-to-date total is 2 cases of measles and 0 cases of rubella for 2016 (Figure 1).
Figure 1: Number of cases measles (n=2) 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 February 20, 2016.
To date in 2016, measles cases have been reported in two Canadian provinces: British Columbia and Ontario.
Figure 2: Distribution of activeFigure 2 - Footnote *, confirmed measles cases by health region.
To date in 2016, 2 measles cases have been genotyped and the genotypes were B3 (n=1) and D8 (n=1) (Figure 3).
Figure 3: Distribution of measles genotypes detected in 2016 (n=2) by weekFigure 3 - Footnote † of rash onset (if available, n=2) or specimen collection (n=0).
- Figure 3 - Footnote †
Epidemiological weeks for laboratory specimens are assigned in accordance with WHO guidelines (WHO.WER.2012;9(87):73) with week 1 beginning on the first Monday of the year.
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.
To date in 2016, no rubella cases have been reported. As such, no genotype information is available for 2016.
One case of congenital rubella syndrome was retrospectively reported by Ontario, for week 50 2015. This case was confirmed as genotype 2B.
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