Measles & Rubella Weekly Monitoring Report – Week 40: September 30 to October 6, 2018

Key Points

  • In Canada, no new cases of measles or rubella were reported in week 40, 2018. 
  • Twenty-five cases of measles and one case of congenital rubella syndrome have been reported in Canada in 2018.
  • Globally, there are large measles outbreaks reported across Europe which have affected a large number of countries. Canadians travelling to Europe and Venezuela are invited to consult the travel health notices for more information. 

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Epidemiological summary:

During epidemiological week 40, 2018 no new laboratory-confirmed cases of measles or rubella were reported in Canada1.

To date in 2018, a total of 25 cases of measles and 1 case of congenital rubella syndrome have been reported. The majority of measles cases were unique importations and a few of those resulted in transmissions in Canada. The last case of measles was reported in epidemiological week 39. The case of congenital rubella syndrome reported in epidemiological week 39 will continue to be monitored by local public health to prevent risk of further spread.

FIGURE 1: Number of cases of measles (n=25), rubella (n=0), and congenital rubella syndrome (n=1)1 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 October 6, 2018.

Figure 1 - Long Description
Figure 1: Number of cases of measles (n=25) and rubella (n=0), and congenital rubella syndrome (n=1) 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 October 6, 2018.
Epidemiological Week of Rash Onset, 2018 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 0 0 0
3 0 0 0
4 1 0 0
5 0 0 0
6 1 0 0
7 1 0 0
8 0 0 0
9 0 0 0
10 1 0 0
11 0 0 0
12 0 0 0
13 0 0 0
14 1 0 0
15 1 0 0
16 2 0 0
17 1 0 0
18 1 0 0
19 1 0 0
20 0 0 0
21 0 0 0
22 3 0 0
23 1 0 0
24 1 0 0
25 1 0 0
26 1 0 0
27 0 0 0
28 1 0 0
29 0 0 0
30 0 0 0
31 2 0 0
32 0 0 0
33 0 0 1
34 1 0 0
35 0 0 0
36 1 0 0
37 1 0 0
38 1 0 0
39 0 0 0
40 0 0 0
Missing Rash Onset 0 0 0
Cases (year-to-date) 25 0 1

Geographic distribution

There is currently one activeFigure 2 - Footnote * case of measles reported in Canada.

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

Figure 2 - long description
Figure 2: Distribution of activeFigure 2 - Footnote *, confirmed measles cases by health region. of rash onset.
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 0
Ouest-du-Québec 0
Montérégie 0
Nord-Est 0
Ontario Central East 0
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 0
Prairie Mountain Health 0
Interlake-Eastern Regional Health Authority 1
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

Laboratory summary

Measles

In 2018, 23 cases of measles have been genotyped and the genotypes were B3 (n=5) and D8 (n=18) (Figure 3). 

Figure 3: Distribution of measles genotypes detected in 2018 (n=23) by weekFigure 3 - Footnote of rash onset.

Figure 3 - long description
Figure 3: Distribution of measles genotypes detected in 2018 (n=0) 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 1 0 0 0 1
5 0 0 0 0 0 0 0 0
6 0 0 0 1 0 0 0 1
7 0 0 0 1 0 0 0 1
8 0 0 0 0 0 0 0 0
9 0 0 0 0 0 0 0 0
10 0 0 0 1 0 0 0 1
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 1 0 0 0 0 0 0 1
15 0 0 0 0 0 0 0 0
16 2 0 0 0 0 0 0 2
17 1 0 0 0 0 0 0 1
18 0 0 0 1 0 0 0 1
19 0 0 0 1 0 0 0 1
20 0 0 0 0 0 0 0 0
21 0 0 0 0 0 0 0 0
22 0 0 0 3 0 0 0 3
23 0 0 0 1 0 0 0 1
24 0 0 0 1 0 0 0 1
25 1 0 0 1 0 0 0 1
26 0 0 0 0 0 0 0 0
27 0 0 0 1 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 1 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 1 0 0 0 0
35 0 0 0 0 0 0 0 0
36 0 0 0 1 0 0 0 0
37 0 0 0 1 0 0 0 0
38 0 0 0 1 0 0 0 0
39 0 0 0 0 0 0 0 0
40 0 0 0 0 0 0 0 0
Total 5 0 0 18 0 0 0 23

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.

RUBELLA
In 2018, there has been one rubella (congenital rubella syndrome) case genotyped and it was genotype 2B.

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