Measles & Rubella Weekly Monitoring Report – Week 26: June 23 to June 29, 2019

Key Points:

  • In Canada, three new cases of measles and no new cases of rubella were reported in week 26, 2019.
  • Currently, there are six active Footnote 1 cases of measles in Canada.
  • Seventy-five (75) 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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Epidemiological Summary:

During epidemiological week 26, 2019 three new confirmed cases of measles and no new cases of rubella were reported in CanadaFootnote 2. The first case, reported by the province of Manitoba, was exposed in the Philippines with rash onset in epidemiological week 25. The second and third cases were both reported by the province of Quebec and are both linked to a previously reported case, with rash onset in epidemiological week 26 for both cases.

To date in 2019, 75 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=75), 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 June 29, 2019.
fig1
Figure 1 - Text Equivalent

Figure 1: Number of cases of measles (n=75), 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 June 29, 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 2 0 0
7 3 0 0
8 6 0 0
9 4 0 0
10 5 0 0
11 2 0 0
12 2 0 0
13 6 0 0
14 4 0 0
15 3 0 0
16 0 0 0
17 2 0 0
18 2 0 0
19 4 0 0
20 3 0 0
21 7 0 0
22 6 0 0
23 0 0 0
24 3 0 0
25 2 0 0
26 2 0 0
Cases (year-to-date) 75 0 0

Geographic Distribution

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

Figure 2: Distribution of activeFootnote *, confirmed measles cases by health region.
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
Centre-du-Québec 0
Montréal et Laval 3
Ouest-du-Québec 0
Montérégie 1
Nord-Est 0
Ontario Central East 1
Ontario Central West 0
Ontario Eastern 0
Ontario North East 0
Ontario North West 0
Ontario South West 0
City of Toronto Health Unit 0
Winnipeg Regional Health Authority 1
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 0
Yukon 0
Northwest Territories 0
Nunavut 0

Footnote 6

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 4.

Return to footnote * referrer

Laboratory Summary

Measles

In 2019, fifty-nine (59) cases of measles have been genotyped and the genotypes were B3 (n=15) and D8 (n=44), both of which are circulating globally.

In week 26, two measles cases were genotyped, both with rash onset in epidemiological week 24. One case was reported by the province of Ontario and was linked to a previously reported case. The second case was reported by the province of Quebec and had travelled to the United States. Measles genotype D8, identical to the WHO named strain MVs/Gir Somnath.IND/42.16/ (GenBank accession number KY120864), was identified in both cases.

Figure 3: Distribution of measles genotypes detected in 2019 (n=59) by week Footnote of rash onset.
fig3
Figure 3 - Text Equivalent

Figure 3: Distribution of measles genotypes detected in 2019 (n=59) by week Footnote 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 2 0 0 2 0 0 0 4
10 0 0 0 2 0 0 0 2
11 0 0 0 1 0 0 0 1
12 1 0 0 1 0 0 0 2
13 2 0 0 4 0 0 0 6
14 0 0 0 3 0 0 0 3
15 1 0 0 2 0 0 0 3
16 0 0 0 0 0 0 0 0
17 0 0 0 2 0 0 0 2
18 2 0 0 0 0 0 0 2
19 1 0 0 2 0 0 0 3
20 0 0 0 2 0 0 0 2
21 0 0 0 5 0 0 0 5
22 0 0 0 5 0 0 0 5
23 0 0 0 0 0 0 0 0
24 0 0 0 3 0 0 0 3
25 0 0 0 0 0 0 0 0
26 0 0 0 0 0 0 0 0
Total 15 0 0 44 0 0 0 59
Footnote 5

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.

Footnotes

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.

Return to footnote 1 referrer

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.

Return to footnote 2 referrer

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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