Measles & Rubella Weekly Monitoring Report - Week 36, September 3, to September 9, 2017

Key Points

  • In Canada, one new case of measles was reported in week 36, 2017.
  • One province (Ontario) has active measles cases.
  • A total of 45 cases of measles, and zero cases of rubella have been reported in Canada in 2017.
  • Globally, there are large outbreaks reported in Europe which have affected several countries. Canadians travelling to Europe are invited to consult the travel health notice for more information.

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Epidemiological summary:

During epidemiological week 36, 2017 one new case of measles was reported in CanadaFootnote 1.
The case had rash onset during week 36 and was a contact of the case imported to Canada from Europe in week 34.

To date in 2017, 45 cases of measles have been reported in Canada, with eight unique importation events. Three importation events have resulted in transmission in Canada.

No cases of rubella have been reported in 2017 (Figure 1). It has been 81 epidemiologic weeks since the last rubella case was reported (week 6, 2016).

Figure 1: Number of cases of measles (n=45) 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 September 9, 2017.

Figure 1 - Long Description
Figure 1: Number of cases of measles (n=45) 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 September 9, 2017.
Epidemiological Week of Rash Onset, 2017 Number of confirmed measles cases reported Number of confirmed rubella cases reported
1 0 0
2 0 0
3 0 0
4 1 0
5 0 0
6 2 0
7 1 0
8 4 0
9 1 0
10 0 0
11 1 0
12 8 0
13 12 0
14 1 0
15 3 0
16 3 0
17 1 0
18 2 0
19 0 0
20 1 0
21 2 0
22 0 0
23 0 0
24 0 0
25 0 0
26 0 0
27 0 0
28 0 0
29 0 0
30 0 0
31 0 0
32 0 0
33 0 0
34 1 0
35 0 0
36 1 0
Missing Rash Onset 0 0
Cases (year-to-date) 45 0

Geographic distribution

There are currently two activeFigure 2 - Footnote * cases of measles reported in one Canadian province (Ontario) (Figure 2).

There are no reported active cases of rubella in Canada (Figure not shown).

Figure 2: Distribution of activeFigure 2 - Footnote *, confirmed measles cases by health region.

Figure 2 - Long Description
Figure 2: Distribution of active Figure 2 - Footnote *, confirmed measles cases by health region.
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
Centre-du-Québec 0 0
Montréal et Laval 0 0
Ouest-du-Québec 0 0
Montérégie 0 0
Nord-Est 0 0
Ontario Central East 0 0
Ontario Central West 0 0
Ontario Eastern 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
Southern Health 0 0
Saskatchewan South 0 0
Saskatchewan Central 0 0
Saskatchewan North 0 0
South Zone 0 0
Calgary Zone 0 0
Central Zone 0 0
Edmonton Zone 0 0
North Zone 0 0
British Columbia 0 0
Yukon 0 0
Northwest Territories 0 0
Nunavut 0 0

Laboratory summary

Measles

To date in 2017, 36 of the 45 reported measles cases (80%) have had specimens available for genotyping and the genotypes were B3 (n=7) and D8 (n=29) (Figure 3).  Genotype information is pending for 1 additional case.

Figure 3: Distribution of measles genotypes detected in 2017 (n=36) by weekFigure 3 - Footnote of rash onset.

Figure 3 - Long Description
Figure 3: Distribution of measles genotypes detected in 2017 (n=36) by weekFigure 3 - 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 0 0 0 0 0 0 0 0
3 0 0 0 0 0 0 0 0
4 0 0 0 0 0 0 0 0
5 0 0 0 0 0 0 0 0
6 2 0 0 0 0 0 0 2
7 1 0 0 0 0 0 0 1
8 2 0 0 2 0 0 0 4
9 0 0 0 0 0 0 0 0
10 0 0 0 0 0 0 0 0
11 0 0 0 2 0 0 0 2
12 0 0 0 8 0 0 0 8
13 1 0 0 4 0 0 0 5
14 0 0 0 3 0 0 0 3
15 0 0 0 2 0 0 0 2
16 0 0 0 4 0 0 0 4
17 0 0 0 0 0 0 0 0
18 0 0 0 2 0 0 0 2
19 0 0 0 0 0 0 0 0
20 0 0 0 1 0 0 0 0
21 0 0 0 1 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 1 0 0 0 0 0 0 0
35 0 0 0 0 0 0 0 0
Total 7 0 0 29 0 0 0 36

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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