Measles & Rubella Weekly Monitoring Report - Week 26, 2018: June 24 to 30, 2018
- In Canada, two new cases of measles and no new cases of rubella were reported in week 26, 2018.
- Eighteen cases of measles and no cases of rubella have been reported in Canada in 2018.
- Globally, there are large measles outbreaks reported in Europe which have affected a large number of countries. Canadians travelling to Europe are invited to consult the travel health notice for more information.
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During epidemiological week 26, 2018 two new laboratory-confirmed cases of measles were reported in Canada1. No cases of rubella were reported.
Both cases were reported by the province of British Columbia. The first case is in a child who travelled to Canada from Pakistan and had rash onset in epidemiological week 25. The source of exposure is unknown. The second case is in an adult who travelled to Canada from India via China while communicable. The rash onset for the second case was in epidemiological week 26.
To date in 2018, a total of 18 cases have been reported.
The last rubella case was reported in February 2016.
Figure 1: Number of cases of measles (n=18) 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 June 30, 2018.
Figure 1 - Long Description
|Epidemiological Week of Rash Onset, 2018||Number of confirmed measles cases reported||Number of confirmed rubella cases reported|
|Missing Rash Onset||0||0|
There are currently three activeNote * cases of measles reported in Canada.
There are no reported active cases of rubella in Canada.
Figure 2: Distribution of activeFootnote *, confirmed measles cases by health region.
Figure 2 - Text 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||1||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|
In 2018, 15 cases of measles have been genotyped and the genotypes were B3 (n=4) and D8 (n=11) (Figure 3).
The genotype of the secondary measles case reported by the province of Ontario in week 24 was genotype D8, identical to the primary imported case reported in week 22 and the MVs/Gir Somnath.IND/42.16/ WHO named strain (GenBank accession number KY120864).
Figure 3: Distribution of measles genotypes detected in 2018 (n=15) by weekFigure 2 - Note † of rash onset.
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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