Provincial COVID-19 Surveillance
To guide the Public Health response to COVID-19, Epidemiology and Surveillance has been monitoring the intensity and geographic spread, characteristics of both cases and contacts, and transmission in various populations. Surveillance data collected includes syndromic, laboratory and public health investigation data about cases and contacts to detect activity in both community and in health care settings.
In this weekly COVID-19 surveillance report, we provide regular updates about the current activity of COVID-19 in Manitoba with two overall objectives:
- To understand COVID-19 within the respiratory context; and
- To present a detailed overview about COVID-19 cases and contacts.
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 35 (August 23 – August 29)
Data extracted up to 4:00am on September 4, 2020
Next reporting date: September 14, 2020
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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
Back Figure 2. Cases of COVID-19 by Sex and Age Group, Manitoba, 2020
Figure 3. Cases of COVID-19 by Health Region and Week of Public Health Report Date, Manitoba, 2020
Back Table 1. Cases of COVID-19 by Health Region, Manitoba, 2020
| Health Region | Cases | Percentage |
|---|---|---|
| Winnipeg RHA | 416 | 34.8% |
| Southern Health-Santé Sud | 259 | 21.7% |
| Interlake-Eastern RHA | 75 | 6.3% |
| Prairie Mountain Health | 440 | 36.8% |
| Northern Health Region | 5 | 0.4% |
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 | 13,476 | 744,053 | 17.1% | 1.8% |
| British Columbia | 5,496 | 297,277 | 5.9% | 1.8% |
| Manitoba | 1,096 | 129,714 | 9.5% | 0.8% |
| New Brunswick | 191 | 53,010 | 6.8% | 0.4% |
| Newfoundland and Labrador | 269 | 31,373 | 6.0% | 0.9% |
| Northwest Territories | 5 | 3,413 | 7.6% | 0.1% |
| Nova Scotia | 1,083 | 74,986 | 7.8% | 1.4% |
| Nunavut | 0 | 1,737 | 4.5% | 0.0% |
| Ontario | 41,935 | 2,789,866 | 19.3% | 1.5% |
| Prince Edward Island | 44 | 27,059 | 17.4% | 0.2% |
| Quebec | 62,076 | 1,084,344 | 12.8% | 5.7% |
| Saskatchewan | 1,611 | 115,914 | 9.9% | 1.4% |
| Yukon | 15 | 2,518 | 6.2% | 0.6% |
| Canada | 127,310 | 5,355,340 | 14.3% | 2.4% |
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, March 12 - August 7, 2020
Note. Musculoskeletal illnesses include osteoporosis, osteoarthritis, rheumatoid arthritis, gout and crystal arthropathies; Immunosuppressed illnesses include organ transplants, immune deficiency; COPD-chronic obstructive pulmonary disease; CVD-cardiovascular disease; Other chronic conditions include cancer, chronic liver disease, obesity, chronic kidney disease. About definitions of chronic conditions
Risk Factors
Table 3. Source of Infection in Health Care Workers, Manitoba, August 23 – August 29, 2020
| Source of infection | Cases | Percentage |
|---|---|---|
| Close contact of known case | 43 | 62.3% |
| Travel | 12 | 17.4% |
| Unknown | 14 | 20.3% |
| All Cases | 69 |
Table 4. Roles of Health Care Workers, Manitoba, August 23 – August 29, 2020
| Role | Cases |
|---|---|
| Nurse | 17 |
| Health care aide | 20 |
| Physician or physician in training | 9 |
| Social/Support Workers | 5 |
| Medical Clerk | 4 |
| Combined Category* | 14 |
Note. The Combined Category counts health care workers in a role with very few cases. These cases are grouped together to keep the identities of these individuals private.
Outbreaks
Figure 8. Weekly Respiratory and COVID-19 Outbreaks, Manitoba, 2017 – 2020
FluWatchers
Figure 9. Weekly FluWatchers Participants and Percentage Reporting Fever and Cough, Manitoba, 2020
Physician Visits
Figure 10. Weekly Percentage of ILI Related Visits to Sentinel Physicians, Manitoba
ED Visits
Figure 11. Weekly Respiratory Visits to Emergency Department, Winnipeg Regional Health Authority, Manitoba
Contacts
Figure 5. COVID-19 Contact Summary Table, Manitoba, August 23 – August 29, 2020
| Regional Health Authority | Active Cases | Median Contacts | Min contacts | Max contacts |
|---|---|---|---|---|
| Interlake-Eastern Health | 6 | 7.5 | 1 | 43 |
| Prairie Mountain Health | 247 | 4.0 | 0 | 32 |
| Southern Health - Sante Sud | 41 | 3.0 | 0 | 10 |
| Winnipeg Health | 164 | 4.0 | 0 | 26 |
Symptoms
Figure 12. 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.
Epidemiology and Surveillance
Other Epidemiology and Surveillance reports
http://www.gov.mb.ca/health/publichealth/surveillance/index.html