Provincial Respiratory Surveillance Report
COVID-19 and Seasonal Influenza
This report provides a current epidemiological update on the intensity and severity of COVID-19 in Manitoba. Surveillance and administrative data include laboratory, public health case and contact tracing investigations, hospitalization and mortality data. Data are presented at the provincial and regional level; and include a focussed review on the disproportional impact of COVID-19 on various populations in the province.
Epidemiology and Surveillance also continues to monitor the activity of seasonal influenza in Manitoba during this pandemic. During the 2020–2021 influenza season, routine reporting of seasonal influenza is included in this weekly report.
In this weekly respiratory surveillance report, we provide regular updates about the current activity of COVID-19 and seasonal influenza in Manitoba with overall objectives:
- To understand COVID-19 within the respiratory context;
- To present a detailed overview about COVID-19 cases and contacts; and
- To continue monitor and report on seasonal influenza during the pandemic.
Data are reported with a one-week delay for increased data accuracy, completeness and reliability. More analyses continue to be conducted and will be added to this report as available. It is published online at approximately 10:00am every Monday.
Week 51 (December 13 – December 19)
Data extracted up to 4:00am on December 25, 2020
Next reporting date: January 4, 2021
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Important Notes
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Cases
Figure 1. Cases of COVID-19 by Week of Public Health Report Date, Manitoba, 2020
Note. Deaths due to COVID-19 were aligned by week of death date.
Back
Figure 2. Cases of COVID-19 by Sex and Age Group, Manitoba, 2020
Figure 3. Cases of COVID-19 by Health Region and Public Health Report Date, Manitoba, 2020
Back Table 1. Cases of COVID-19 by Health Region, Manitoba, 2020
| Health Region | Cases | Percentage |
|---|---|---|
| Winnipeg RHA | 13915 | 60.8% |
| Southern Health-Santé Sud | 4039 | 17.7% |
| Interlake-Eastern RHA | 1617 | 7.1% |
| Prairie Mountain Health | 1471 | 6.4% |
| Northern Health Region | 1826 | 8.0% |
Testing
Figure 4. Average Daily Testing Volume and Positivity (%) for COVID-19 by Week of Specimen Receiving Date, Manitoba, 2020
Back Table 2. Cumulative National Testing Volume and Positivity (%) for COVID-19 by Province/Territory, Canada, 2020
| Province | Confirmed Cases | Tests Completed | Tested Population (Estimated %) | Positivity Rate (Estimated %) |
|---|---|---|---|---|
| Alberta | 87,581 | 1,547,298 | 35.6% | 5.7% |
| British Columbia | 45,400 | 899,338 | 17.8% | 5.0% |
| Manitoba | 22,397 | 389,259 | 28.5% | 5.8% |
| New Brunswick | 573 | 111,512 | 14.4% | 0.5% |
| Newfoundland and Labrador | 372 | 69,461 | 13.3% | 0.5% |
| Northwest Territories | 24 | 7,635 | 17.0% | 0.3% |
| Nova Scotia | 1,442 | 167,239 | 17.3% | 0.9% |
| Nunavut | 259 | 5,159 | 13.3% | 5.0% |
| Ontario | 151,257 | 6,998,331 | 48.3% | 2.2% |
| Prince Edward Island | 90 | 75,421 | 48.5% | 0.1% |
| Quebec | 172,801 | 2,382,661 | 28.2% | 7.3% |
| Saskatchewan | 13,077 | 289,625 | 24.7% | 4.5% |
| Yukon | 59 | 5,822 | 14.3% | 1.0% |
| Canada | 495,345 | 12,948,837 | 34.6% | 3.8% |
Note. National testing data are collected daily from the national Coronavirus disease (COVID-19) Outbreak update webpage.
Severity
Figure 5. Severe Outcomes of COVID-19 by Week of Public Health Report Date, Manitoba, 2020
Note. ICU admissions are not included in the hospital admissions.
Figure 6. Age Distribution of Severe COVID-19 Cases Compared to All Cases, Manitoba, 2020
Figure 7. Percentage of COVID-19 Cases With Underlying Illnesses, Manitoba, 2020
Note. Musculoskeletal illnesses include: osteoporosis, osteoarthritis, juvenile idiopathic arthritis, gout and crystal Arthropathies; COPD-chronic obstructive pulmonary disease; CVD-cardiovascular disease; Other CVDs include: ischemic heart disease, heart failure, acute myocardial infarction, and stroke; Other chronic conditions include: parkinson’s disease, multiple sclerosis, alzheimer’s disease and epilepsy. About definitions of chronic conditions
Risk Factors
Table 3. Source of Infection in Health Care Workers with Non-missing Information, Manitoba, 2020
| Source of infection | Cases | Percentage |
|---|---|---|
| Close contact of known case | 870 | 58.6% |
| Pending | 175 | 11.8% |
| Travel | 13 | 0.9% |
| Unknown | 427 | 28.8% |
| All Cases | 1485 |
Table 4. Roles of Health Care Workers with Non-missing Information, Manitoba, 2020
| Role | Cases |
|---|---|
| Allied Health and Support Staff | 853 |
| Nurse/Licensed Practical Nurse | 426 |
| Not identified | 120 |
| Physician/Physician in training | 57 |
| First Responder | 29 |
Outbreaks
Figure 8. Weekly Respiratory and COVID-19 Outbreaks, Manitoba, 2017 – 2020
Contacts
Table 5. COVID-19 Contact Summary Table, Manitoba, 2020
| Regional Health Authority | Active Cases | Median Contacts | Min contacts | Max contacts |
|---|---|---|---|---|
| Winnipeg Health | 2276 | 1 | 0 | 79 |
| Northern Health | 829 | 0 | 0 | 15 |
| Interlake-Eastern Health | 347 | 0 | 0 | 27 |
| Southern Health - Sante Sud | 242 | 0 | 0 | 22 |
| Prairie Mountain Health | 237 | 0 | 0 | 70 |
Symptoms
Figure 9. Percentage of Symptoms Reported by COVID-19 Cases, Manitoba, 2020
Note: Other symptoms include those less common symptoms such as sweating, runny eyes, itchy throat, etc.
FluWatchers
Figure 10. Weekly FluWatchers Participants and Percentage Reporting Fever and Cough, Manitoba, 2020
Physician Visits
Figure 11. Weekly Percentage of ILI Related Visits to Sentinel Physicians, Manitoba, 2017 – 2020
ED Visits
Figure 12. Weekly Respiratory Visits to Emergency Department, Winnipeg Regional Health Authority, Manitoba, 2017 – 2020
Epidemiology and Surveillance
Other Epidemiology and Surveillance reports
https://www.gov.mb.ca/health/publichealth/surveillance/index.html