Measles & Rubella Weekly Monitoring Report – Week 28: July 7 to July 13, 2019
- In Canada, four new cases of measles and no new cases of rubella were reported in week 28, 2019.
- Currently, there are eight active Footnote 1 cases of measles in Canada.
- Eighty-one (81) cases of measles and no cases of rubella have been reported in Canada in 2019. These cases were reported by Québec, British Columbia, the Northwest Territories, Ontario, Alberta, New Brunswick, Saskatchewan, and Manitoba.
- Globally, there are large measles outbreaks which have affected a large number of countries. Canadians travelling outside of Canada are invited to consult the travel health notices for more information.
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During epidemiological week 28, 2019 four new confirmed cases of measles and no new cases of rubella were reported in CanadaFootnote 2. All four cases were reported by the province of Quebec, and are part of an ongoing outbreak in the greater Montreal area that began in June 2019. Rash onset occurred in epidemiological week 28 for all four cases. To date in 2019, 81 cases of measles and no cases of rubella have been reported. The last case of rubella was reported in 2016 and the last case of congenital rubella syndrome/infection was reported in September 2018.
Figure 1 - Text Equivalent
|Epidemiological Week of Rash Onset, 2019||Number of confirmed measles cases reported||Number of confirmed rubella cases reported||Number of confirmed congenital rubella syndrome/infection cases reported|
- There are currently eight active Footnote * cases of measles reported in Canada.
Figure 2 - Text Equivalent
|Health Region||Measles Active Cases|
|Eastern Regional Integrated Health Authority||0|
|Central Regional Integrated Health Authority||0|
|Western Regional Integrated Health Authority||0|
|Labrador-Grenfell Regional Integrated Health Authority||0|
|Prince Edward Island||0|
|South Shore District Health Authority||0|
|South West Nova District Health Authority||0|
|Annapolis Valley District Health Authority||0|
|Colchester East Hants Health Authority||0|
|Cumberland Health Authority||0|
|Pictou County Health Authority||0|
|Guysborough Antigonish Strait Health Authority||0|
|Cape Breton District Health Authority||0|
|Capital District Health Authority||0|
|Zone 1 (NB)||0|
|Zone 2 (NB)||0|
|Zone 3 (NB)||0|
|Zone 4 (NB)||0|
|Zone 5 (NB)||0|
|Zone 6 (NB)||0|
|Zone 7 (NB)||0|
|Québec et Chaudières-Appalaches||0|
|Montréal et Laval||6|
|Ontario Central East||0|
|Ontario Central West||0|
|Ontario North East||0|
|Ontario North West||0|
|Ontario South West||0|
|City of Toronto Health Unit||0|
|Winnipeg Regional Health Authority||0|
|Prairie Mountain Health||0|
|Interlake-Eastern Regional Health Authority||0|
|Northern Regional Health Authority||0|
In 2019, sixty-four (64) cases of measles have been genotyped and the genotypes were B3 (n=16) and D8 (n=48), both of which are circulating globally.
In week 28, two measles cases were genotyped. Both cases were reported by the province of Quebec. One case, with rash onset in epidemiological week 26, was linked to a previously reported case and had the same measles genotype D8 strain as the earlier case, identical to the WHO named strain MVs/Gir Somnath.IND/42.16/ (GenBank accession number KY120864). A different genotype D8 strain was identified in the second case, who had rash onset in in epidemiological week 25 and travel history to Vietnam.
Figure 3 - Text Equivalent
|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 named strains), refer to Hiebert J and Severini A. Canada Communicable Disease Report. 2014; 40-12: 257- 260.
- Footnote 1
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 report.
- Footnote 2
Only cases with rash onset up to the indicated end date are included in this report. Any additional cases will be described in future reports.
- Footnote 3
Epidemiological week of birth is used for congenital rubella syndrome cases.
- Footnote 4
Public Health Agency of Canada. Guidelines for the prevention and control of measles outbreaks in Canada. Canadian Communicable Disease Report. 2013. Vol. 39: Definitions: conclusion of an outbreak (p. 5).
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