Measles & Rubella Weekly Monitoring Report - Week 19, 2018: May 6 to May 12, 2018
- In Canada, one new case of measles and no new cases of rubella was reported in week 19, 2018.
- Eleven 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 19, 2018 one new laboratory-confirmed case of measles was reported by the province of Alberta1. The case is a child who had rash onset during epidemiological week 19, approximately two weeks after returning back from India. No cases of rubella were reported.
To date in 2018, a total of 11 cases have been reported, all cases were imported or associated with an imported case.
The last rubella case was reported in February 2016.
Figure 1: Number of cases of measles (n=11) 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 May 12, 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||1||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, nine cases of measles have been genotyped and the genotypes were B3 (n=4) and D8 (n=5) (Figure 3).
The case reported by the province of Ontario with rash onset in week 18 and travel history to India was genotype D8, which is endemic in India.
Figure 3: Distribution of measles genotypes detected in 2018 (n=9) 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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