Measles & Rubella Weekly Monitoring Report: April 26 to May 2, 2015 (week 17)

Key Points

  • In Canada, no new cases of measles were reported during week 17.
  • Two provinces (Manitoba and Quebec) have reported recent measles activity. These events are not linked, as they are different genotypes and resulted from separate importation events.
  • A total of 193 cases of measles, and 0 cases of rubella have been reported in Canada for 2015.

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Date published: 2015-05-13

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Epidemiological Summary

Figure 1. Number of cases of measles (n=193) 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 May 02, 2015.

Figure 1
Figure 1 - Text Description
Figure 1. Number of cases of measles (n=193) 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 May 02, 2015.
Epidemiological Week of Rash Onset, 2015 Number of confirmed measles cases reported Number of confirmed rubella cases reported
1 0 0
2 1 0
3 3 0
4 12 0
5 2 0
6 13 0
7 16 0
8 15 0
9 87 0
10 12 0
11 17 0
12 4 0
13 8 0
14 1 0
15 2 0
16 0 0
17 0 0
18 0 0
19 0 0
20 0 0
21 0 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 0 0
35 0 0
36 0 0
37 0 0
38 0 0
39 0 0
40 0 0
41 0 0
42 0 0
43 0 0
44 0 0
45 0 0
46 0 0
47 0 0
48 0 0
49 0 0
50 0 0
51 0 0
52 0 0
Missing Rash Onset 0 0
Cases (year-to-date) 193 0


During epidemiological week 17, 2015, no new cases of measles were reported.

Recent measles activity reported prior to week 17 includes an imported case in Manitoba (linked to travel to South Africa), and an outbreak in Quebec (linked to travel to India).

The year-to-date total is 193 cases of measles and 0 cases of rubella for 2015.

Note that when additional cases are reported in advance of the cycle, these cases will be described in the appropriate reporting cycle.

Geographic Distribution

Figure 2: Distribution of confirmed measles and rubella cases by health region. Cases are included if they are considered activeFigure 2 - Footnote * Figure 2 - Footnote ¥

Figure 2
Figure 2 - Text Description
Figure 2: Distribution of confirmed measles and rubella cases by health region. Cases are included if they are considered active Table Figure 2 - Footnote * Table Figure 2 - Footnote ¥
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 2 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 0 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 1 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 Interior No Data No Data
British Columbia Fraser No Data No Data
British Columbia Vancouver Coastal No Data No Data
British Columbia Vancouver Island No Data No Data
British Columbia Northern No Data No Data
Yukon 0 0
Northwest Territories 0 0
Nunavut 0 0

Laboratory Summary

Measles

To date in 2015, 53 measles cases have been genotyped and the genotypes were: B3 (n=21), D4 (n=17), H1 (n=11) and D8 (n=4).

Two cases from Quebec, related to travel to India, were genotype D8 which is endemic in IndiaFootnote 2.

One case from Manitoba, with travel history to South Africa, was genotype B3 which is endemic in the African region (including South Africa)Footnote 2.

Figure 3: Distribution of measles genotypes detected in 2015 (n=53) by week of rash onset (if available, n=53) or specimen collection (n=0). Epidemiological weeks 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

* Genotype B3 sequences identical to sequence variant MVi/Harare.ZWE/38.09 (GenBank accession number JF973033)

Figure 3 - Text Description
Figure 3: Distribution of measles genotypes detected in 2015 cases by week of rash onset (if available) or specimen collection. Epidemiological weeks are assigned in accordance with WHO guidelines (WHO.WER.2012;9(87):73) with week 1 beginning on the first Monday of the year.
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 1 1 0 0 0 0 2
4 0 4 7 0 0 0 0 11
5 0 0 1 1 0 0 0 2
6 0 0 7 0 0 0 0 7
7 0 1 1 0 0 0 0 2
8 0 3 0 0 0 0 0 3
9 0 10 0 0 0 0 0 10
10 0 0 0 1 0 0 0 1
11 0 1 0 0 0 0 2 3
12 0 0 0 0 0 0 1 1
13 0 0 0 1 0 0 7 8
14 0 0 0 0 0 0 1 1
15 1 0 0 1 0 0 0 2
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 1 20 17 4 0 0 11 53

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.

Footnotes

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