Measles & Rubella Weekly Monitoring Report: March 5 to March 11, 2017 (week 10)
- In Canada, 1 new case of measles was reported in week 10, 2017.
- Three provinces have active measles cases: Nova Scotia (n=4), Alberta (n=1), and British Columbia (n=1). These events are not linked, as they resulted from separate importation events (from USA, Indonesia, and France respectively). There are no active cases of rubella.
- A total of 9 cases of measles, and zero cases of rubella have been reported in Canada in 2017.
During epidemiological week 10, 2017, 1 new case of measles was reported in Canada1. This case had rash onset during week 9 (n=1).
To date in 2017, 9 cases of measles have been reported in Canada from three different provinces, Nova Scotia (n=7), Alberta (n=1), and British Columbia (n=1). These events are not linked, as they resulted from separate importation events (from USA, Indonesia, and France respectively). Rash onsets occurred during week 4 (n=1), week 6 (n=2), week 7 (n=1), week 8 (n=4), and week 9 (n=1). No cases of rubella have been reported in 2017 (Figure 1). It has been 56 epidemiologic weeks since the last rubella case was reported (week 6, 2016).
Figure 1: Number of cases of measles (n=9) 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 March 11, 2017.
Note: Only cases up to the indicated end date are included in this report. Any additional cases will be described in future reports.
Figure 1 - Text 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 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 activeFigure 2 Footnote *, confirmed measles cases by health region
- Figure 2 - Footnote *
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 - Footnote **
No data' is indicated for jurisdictions that do report cases of measles or rubella to the Public Health Agency of Canada, but do not include the public health region variable.
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||5||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||2||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, 3 measles cases have been genotyped and the genotypes are B3 (n=3). Genotype information is pending for 3 additional cases. (Figure 3).
Figure 3: Distribution of measles genotypes detected in 2017 (n=3) by weekFootnote † of rash onset.
- 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.
Figure 3 - Text 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.
To date in 2017, no rubella cases have been genotyped.
- Footnote 1
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 2
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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