Measles & Rubella Weekly Monitoring Report – Week 20: May 16 to May 22, 2021

Key points:

  • In Canada, no new cases of measles or rubella were reported in week 20, 2021.
  • Currently, there are no activeFootnote 1 cases of measles or rubella in Canada.
  • No cases of measles and no cases of rubella have been reported in Canada in 2021.
  • Canadians travelling outside of Canada are encouraged to consult the travel health notices for information on measles and rubella outbreaks occurring in other countries.

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Epidemiological Summary:

During epidemiological week 20, 2021, no new cases of measles or rubella were reported in CanadaFootnote 2. To date in 2021, no cases of measles and no cases of rubella have been reported. The last case of measles was reported in February 2020. The last case of rubella was reported in December 2019. The last case of congenital rubella syndrome/infection was reported in September 2018.

Figure 1: Number of cases of measles (n=0), rubella (n=0), and congenital rubella syndrome/infection (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 May 22, 2021.
Figure 1 - Text Equivalent
Figure 1: Number of cases of measles (n=0), rubella (n=0), and congenital rubella syndrome/infection (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 May 22, 2021.
Epidemiological Week of Rash Onset, 2021 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 0 0 0
5 0 0 0
6 0 0 0
7 0 0 0
8 0 0 0
9 0 0 0
10 0 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
Cases (year-to-date) 0 0 0

Geographic Distribution

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

Active measles cases are those in which the onset date of the case falls within 42 days of the end date of the epidemiological week of the reportFootnote 4. Active rubella cases are those in which the onset date of the case falls within 46 days of the end date of the epidemiological week of the reportFootnote 5.

Return to footnote * referrer

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 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 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

The current global distribution of measles genotypes can be found on the WHO Measles Surveillance website.

Footnotes

Footnote 1

Active measles cases are those in which the onset date of the case falls within 42 days of the end date of the epidemiological week of the report. Active rubella cases are those in which the onset date of the case falls within 46 days of the end date of the epidemiological week of the 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/infection cases.

Return to footnote 3 referrer

Footnote 4

The Centers for Disease Control and Prevention. Manual for the Surveillance of Vaccine-Preventable Diseases. Chapter 7: Measles. https://www.cdc.gov/vaccines/pubs/surv-manual/chpt07-measles.html. Page last reviewed: May 13, 2019.

Return to footnote 4 referrer

Footnote 5

The Centers for Disease Control and Prevention. Manual for the Surveillance of Vaccine-Preventable Diseases. Chapter 14: Rubella. https://www.cdc.gov/vaccines/pubs/surv-manual/chpt14-rubella.html. Page last reviewed: May 18, 2018.

Return to footnote 5 referrer

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