Measles & Rubella Weekly Monitoring Report - Week 33, August 13 to August 19, 2017
- In Canada, no new cases of measles were reported in week 33, 2017.
- There are currently no active cases in Canada.
- A total of 43 cases of measles, and zero cases of rubella have been reported in Canada in 2017.
- Canadians travelling to Europe are invited to consult the travel health notice for more information.
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During epidemiological week 33, 2017 no new case of measles was reported in CanadaFootnote 1. The most recent case was reported by Quebec in week 23.
To date in 2017, 43 cases of measles have been reported in Canada. Two outbreaks have been confirmed – one that began in February and the other began in March and involved five provinces. Both outbreaks have concluded.
No cases of rubella have been reported in 2017 (Figure 1). It has been 78 epidemiologic weeks since the last rubella case was reported (week 6, 2016).
Figure 1: Number of cases of measles (n=43) 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 August 19, 2017.
Figure 1 - Long Description
|Epidemiological Week of Rash Onset, 2017||Number of confirmed measles cases reported||Number of confirmed rubella cases reported|
|Missing Rash Onset||0||0|
There are no currently active* cases of measles reported in Canada (Figure 2).
There are no reported active cases of rubella in Canada (Figure not shown).
Maps from previous weeks, including any retrospective updates, are available online in the Measles and rubella weekly surveillance maps feature.
Figure 2: Distribution of active*, confirmed measles cases by health region
* Active cases or outbreaks are those in which the onset date of the most recent case/outbreak-associated case falls within 32 days of the issue date of this reportFootnote 2.
Figure 2 - Long Description
|Health Region||Measles Cases||Rubella Cases|
|Eastern Regional Integrated Health Authority||0||0|
|Central Regional Integrated Health Authority||0||0|
|Western Regional Integrated Health Authority||0||0|
|Labrador-Grenfell Regional Integrated Health Authority||0||0|
|Prince Edward Island||0||0|
|South Shore District Health Authority||0||0|
|South West Nova District Health Authority||0||0|
|Annapolis Valley District Health Authority||0||0|
|Colchester East Hants Health Authority||0||0|
|Cumberland Health Authority||0||0|
|Pictou County Health Authority||0||0|
|Guysborough Antigonish Strait Health Authority||0||0|
|Cape Breton District Health Authority||0||0|
|Capital District Health Authority||0||0|
|Zone 1 (NB)||0||0|
|Zone 2 (NB)||0||0|
|Zone 3 (NB)||0||0|
|Zone 4 (NB)||0||0|
|Zone 5 (NB)||0||0|
|Zone 6 (NB)||0||0|
|Zone 7 (NB)||0||0|
|Québec et Chaudières-Appalaches||0||0|
|Montréal et Laval||0||0|
|Ontario Central East||0||0|
|Ontario Central West||0||0|
|Ontario North East||0||0|
|Ontario North West||0||0|
|Ontario South West||0||0|
|City of Toronto Health Unit||0||0|
|Winnipeg Regional Health Authority||0||0|
|Prairie Mountain Health||0||0|
|Interlake-Eastern Regional Health Authority||0||0|
|Northern Regional Health Authority||0||0|
To date in 2017, 35 of the 43 reported measles cases (81%) have had specimens available for genotyping and the genotypes were B3 (n=6) and D8 (n=29) (Figure 3).
Figure 3: Distribution of measles genotypes detected in 2017 (n=35) by week† of rash onset.
† 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.
Figure 3 - Long Description
|Epi week||B3||B3 - Harare||D4||D8||D8 - Taunton||D9||H1||Total|
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.
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