Measles & Rubella Weekly Monitoring Report - Week 10, 2019: March 3 to March 9, 2019

Key Points

  • In Canada, four new cases of measles and no new cases of rubella were reported in week 10, 2019.
  • Currently, there are twelve activeFootnote 1 cases of measles in Canada.
  • Twenty-six (26) cases of measles and no cases of rubella have been reported in Canada in 2019. These cases have been reported by Québec, British Columbia, the Northwest Territories, and Ontario.
  • 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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Epidemiological summary

During epidemiological week 10, 2019 four new laboratory-confirmed cases of measles and no new cases of rubella were reported in CanadaFootnote 2. Two cases were reported by the province of British Columbia, of which one case was linked to the Vancouver outbreak and the other case was acquired during travel to Oregon in the United States. Both cases had rash onset in epidemiological week 10. The third case was reported by the province of Ontario and was acquired during travel to Cambodia/Thailand. The week of rash onset was epidemiological week 9. The last case was reported by the Northwest Territories with rash onset in week 9 and was linked to a previously reported case from the region.

To date in 2019, twenty-six 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: Number of cases of measles (n=26), rubella (n=0), and congenital rubella syndrome (n=0)Footnote 3 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 9, 2019.

figure 1

Figure 1 - Text equivalent
Figure 1: Number of cases of measles (n=26), rubella (n=0), and congenital rubella syndrome (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 9, 2019.
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
1 0 0 0
2 1 0 0
3 0 0 0
4 1 0 0
5 5 0 0
6 3 0 0
7 3 0 0
8 6 0 0
9 4 0 0
10 3 0 0
11 0 0 0
12 0 0 0
13 0 0 0
14 0 0 0
15 0 0 0
16 0 0 0
17 0 0 0
18 0 0 0
19 0 0 0
20 0 0 0
21 0 0 0
22 0 0 0
23 0 0 0
24 0 0 0
25 0 0 0
26 0 0 0
27 0 0 0
28 0 0 0
29 0 0 0
30 0 0 0
31 0 0 0
32 0 0 0
33 0 0 0
34 0 0 0
35 0 0 0
36 0 0 0
37 0 0 0
38 0 0 0
39 0 0 0
40 0 0 0
41 0 0 0
42 0 0 0
43 0 0 0
44 0 0 0
45 0 0 0
46 0 0 0
47 0 0 0
48 0 0 0
49 0 0 0
50 0 0 0
51 0 0 0
52 0 0 0
Missing Rash Onset 0 0 0
Cases (year-to-date) 26 0 0

Geographic distribution

There are currently twelve activeFootnote * cases of measles reported in Canada.

Figure 2: Distribution of activeFootnote *, confirmed measles cases by health region.

figure 2

Figure 2 - Text equivalent
Figure 2: Distribution of active Figure 2 Table - Footnote * confirmed measles cases by health region
Health Region Measles Active Cases
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 4.

Return to first footnote * referrer

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
Centre-du-Québec 0
Montréal et Laval 0
Ouest-du-Québec 0
Montérégie 0
Nord-Est 0
Ontario Central East 0
Ontario Central West 1
Ontario Eastern 0
Ontario North East 0
Ontario North West 0
Ontario South West 0
City of Toronto Health Unit 1
Winnipeg Regional Health Authority 0
Prairie Mountain Health 0
Interlake-Eastern Regional Health Authority 0
Northern Regional Health Authority 0
Southern Health 0
Saskatchewan South 0
Saskatchewan Central 0
Saskatchewan North 0
South Zone 0
Calgary Zone 0
Central Zone 0
Edmonton Zone 0
North Zone 0
British Columbia 9
Yukon 0
Northwest Territories 1
Nunavut 0
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 4.

Return to first footnote * referrer

Laboratory summary

Measles

In 2019, eighteen (18) cases of measles have been genotyped and the genotypes were B3 (n=7) and D8 (n=11).

In week 10, three measles cases were genotyped. Two cases from British Columbia, related to the Vancouver outbreak, with rash onsets in epidemiological weeks 8 and 9, were genotype D8, all identical to the WHO named strain MVs/Gir Somnath.IND/42.16/ (GenBank accession number KY120864), the strain associated with the outbreak. The case reported from Ontario, with rash onset in week 9 and associated with travel to Pakistan, was genotype B3.

Figure 3: Distribution of measles genotypes detected in 2019 (n=18) by week† of rash onset.

figure 3

Figure 3 - Text equivalent
Figure 3: Distribution of measles genotypes detected in 2019 (n=18) by weekFigure 3 - Note of rash onset.
Epi week B3 B3 - Harare D4 D8 D8 - Taunton D9 H1 Total
1 0 0 0 0 0 0 0 0
2 1 0 0 0 0 0 0 1
3 0 0 0 0 0 0 0 0
4 0 0 0 1 0 0 0 1
5 1 0 0 2 0 0 0 3
6 0 0 0 2 0 0 0 2
7 1 0 0 2 0 0 0 3
8 3 0 0 3 0 0 0 6
9 1 0 0 1 0 0 0 2
10 0 0 0 0 0 0 0 0
11 0 0 0 0 0 0 0 0
12 0 0 0 0 0 0 0 0
13 0 0 0 0 0 0 0 0
14 0 0 0 0 0 0 0 0
15 0 0 0 0 0 0 0 0
16 0 0 0 0 0 0 0 0
17 0 0 0 0 0 0 0 0
18 0 0 0 0 0 0 0 0
19 0 0 0 0 0 0 0 0
20 0 0 0 0 0 0 0 0
21 0 0 0 0 0 0 0 0
22 0 0 0 0 0 0 0 0
23 0 0 0 0 0 0 0 0
24 0 0 0 0 0 0 0 0
25 0 0 0 0 0 0 0 0
26 0 0 0 0 0 0 0 0
27 0 0 0 0 0 0 0 0
28 0 0 0 0 0 0 0 0
29 0 0 0 0 0 0 0 0
30 0 0 0 0 0 0 0 0
31 0 0 0 0 0 0 0 0
32 0 0 0 0 0 0 0 0
33 0 0 0 0 0 0 0 0
34 0 0 0 0 0 0 0 0
35 0 0 0 0 0 0 0 0
36 0 0 0 0 0 0 0 0
37 0 0 0 0 0 0 0 0
38 0 0 0 0 0 0 0 0
39 0 0 0 0 0 0 0 0
40 0 0 0 0 0 0 0 0
41 0 0 0 0 0 0 0 0
42 0 0 0 0 0 0 0 0
43 0 0 0 0 0 0 0 0
44 0 0 0 0 0 0 0 0
45 0 0 0 0 0 0 0 0
46 0 0 0 0 0 0 0 0
47 0 0 0 0 0 0 0 0
48 0 0 0 0 0 0 0 0
49 0 0 0 0 0 0 0 0
50 0 0 0 0 0 0 0 0
51 0 0 0 0 0 0 0 0
52 0 0 0 0 0 0 0 0
Total 7 0 0 11 0 0 0 18
Footnote †

Epidemiological weeks for laboratory specimens submitted to the National Microbiology Laboratory are assigned and reported in accordance with WHO guidelines (WHO.WER.2012;9(87):73) with week 1 beginning on the first Monday of the year, which for 2019 is January 7. However, for the purposes of this report, the genotype data is presented in accordance with PAHO reporting weeks with week 1 of 2019 beginning on December 30, 2018).

Return to footnote referrer

 

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.

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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.

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Footnote 3

Epidemiological week of birth is used for congenital rubella syndrome cases.

Return to footnote 3 referrer

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).

Return to footnote 4 referrer

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