Measles & Rubella Weekly Monitoring Report - Week 7, 2017: February 12 to February 18, 2017
- In Canada, no new cases of measles and rubella were reported for week 7, 2017.
- One province (Nova Scotia) has active measles cases, possibly linked to travel. There are no active cases of rubella.
- A total of 3 cases of measles, and no cases of rubella have been reported in Canada in 2017.
During epidemiological week 7, 2017, no new cases of measles and rubella were reported in CanadaFootnote 1.
To date in 2017, 3 cases of measles have been reported; with rash onset during week 4 (n=1) and week 6 (n=2). No cases of rubella have been reported in 2017 (Figure 1). It has been 53 epidemiologic weeks since the last rubella case was reported (week 6, 2016).
Figure 1: Number of cases of measles (n=3) 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 February 18, 2017.
There are no reported active cases of rubella in Canada (Figure not shown).
Maps from previous weeks, including any retrospective updates, are available online in the Measles and rubella weekly surveillance maps feature.
Figure 2: Distribution of activeFigure 2 - Footnote *, confirmed measles cases by health region.
To date in 2017, measles genotyping is pending for 1 case and specimens for the remaining 2 cases are unavailable (Figure 3).
Figure 3: Distribution of measles genotypes detected in 2017 (n=0) by week† of rash onset (if available, n=0) or specimen collection (n=0). Measles cases without specimens available for genotyping are not reflected (n=2).
- Figure 3 - Footnote †
Epidemiological weeks for laboratory specimens 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 - Footnote *
Genotype B3 sequences identical to sequence variant / named strain MVi/Harare.ZWE/38.09 (GenBank accession number JF973033)
Return to Figure 3 - Footnote * referrer
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.
To date in 2017, no rubella cases have been genotyped.
- Footnote 1
Only cases up to the indicated end date are included in this report. Any additional cases will be described in future reports.
- Footnote 2
Public Health Agency of Canada. Guidelines for the prevention and control of measles outbreaks in Canada. Canadian Communicable Disease Report. 2013. Vol. 39: Definitions: conclusion of an outbreak (p. 5).
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