Measles & Rubella Weekly Monitoring Report – Week 39: September 24 to September 30, 2023

On this page

• Epidemiological summary
• Geographic distribution
• Laboratory summary

Epidemiological summary

During epidemiological week 39, 2023, 1 new case of measles and no new cases of rubella were reported in Canada^{Footnote 2}. The case was reported by the province of Ontario and is an unvaccinated child who acquired the infection in Pakistan prior to arriving in Canada. Rash onset occurred in epidemiological week 39 (late September). To date in 2023, 8 cases of measles, 1 case of rubella and 2 cases of congenital rubella syndrome have been reported.

Figure 1 - Text description

Epidemiological Week of Rash Onset, 2023	Number of confirmed measles cases reported	Number of confirmed rubella cases reported	Number of confirmed congenital rubella syndrome/infection cases reported
1	1	0	0
2	0	0	0
3	0	0	0
4	0	0	0
5	0	0	0
6	0	0	0
7	2	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	1	0	0
15	0	0	0
16	1	0	0
17	0	0	0
18	1	0	0
19	0	0	0
20	0	0	0
21	0	0	0
22	0	0	0
23	1	0	0
24	0	0	0
25	0	0	0
26	0	0	0
27	0	0	0
28	0	1	0
29	0	0	0
30	0	0	0
31	0	0	0
32	0	0	1
33	0	0	0
34	0	0	1
35	0	0	0
36	0	0	0
37	0	0	0
38	0	0	0
39	1	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)	8	1	2

Geographic distribution

There is currently 1 active^{Footnote *} case of measles and 1 active^{Footnote **} case of congenital rubella syndrome in Canada.

Figure 2 - Text description

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	1
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

Figure 3 - Text description

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	1
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

To date in 2023, 7 cases of measles have been genotyped and the genotypes were B3 (n=2) and D8 (n=5).

Figure 4 - Text description

Epi week	B3	B3 - Harare	D4	D8	D8 - Taunton	D9	H1	Total
1	1	0	0	0	0	0	0	1
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	0	0	0	0	0	0	0	0
7	1	0	0	1	0	0	0	2
8	0	0	0	0	0	0	0	0
9	0	0	0	0	0	0	0	0
10	0	0	0	0	0	0	0	0
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	0	0	0	1	0	0	0	1
15	0	0	0	0	0	0	0	0
16	0	0	0	1	0	0	0	1
17	0	0	0	0	0	0	0	0
18	0	0	0	1	0	0	0	1
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	1	0	0	0	1
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	2	0	0	5	0	0	0	7

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.

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

Rubella and Congenital rubella syndrome/infection

To date in 2023, 1 congenital rubella syndrome case has been genotyped and it was genotype 1G.