Provincial Respiratory Surveillance Report

COVID-19


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. In this weekly report, we provide regular updates about the current activity of COVID-19 in Manitoba 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.

For reporting on seasonal influenza in 2021-2022 season, please visit www.gov.mb.ca/health/publichealth/surveillance/influenza/index.html

Week 6 (February 6 – February 12)

About epidemiological week

Data extracted up to 1:00 am on February 18, 2022
Next reporting date: February 28, 2022

COVID-19: High Activity

In Week 6, there were 2,614 laboratory-confirmed COVID-19 cases reported in Manitoba, a decrease from 3,522 in the previous week. The volume of lab tests decreased to on average 1,545 people tested for COVID-19 per day compared to 1,765 in the previous week, and the positivity rate of lab tests was 23.2%, a decrease from 27.2% in the previous week.

In the 2,614 cases reported this week, 40% were reported from the Winnipeg Regional Health Authority and 24% were reported from the Northern Health Region. The remaining cases were reported from Prairie Mountain Health Authority (15%), Interlake-Eastern Regional Health Authority (11%), and Southern Health - Santé Sud Regional Health Authority (10%).

In all Manitoba residents, 81.8% of residents have been partially vaccinated and 75.5% have been fully vaccinated. By January 31st, 36.6% have received one additional dose.

Cases

About cases

  • New cases: 2,614
  • Total cases: 126,945
  • Recovered cases: 115,467
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Testing

About testing

This week:

  • Average daily specimens: 1,545
  • Weekly positivity rate: 23.2%

Total:

  • Tested people: 706,550
  • Population tested: 51.8%
  • Specimens tested: 1,409,263
  • Positivity rate: 9.5%
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Severity

About severity

Severe outcomes associated with COVID-19:

  • Hospitalizations: 7,717
    • ICU admissions3: 1,348
  • Deaths: 1,645
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Outbreaks

About outbreaks

2022 COVID-19 outbreaks: 83

  • Outbreaks in long-term care facilities: 40
  • Outbreaks in schools: 0

Total COVID-19 outbreaks: 407

  • Total outbreaks in long-term care facilities: 190
  • Total outbreaks in schools: 33
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Exposure

About exposure

Source of infection in cases (% of total):

  • Travel: 2.0%
  • Close contact to cases: 42.5%
  • Unknown: 26.3%
  • Pending: 29.2%
More Analyses

Symptoms

About symptoms

Symptomatic cases: 56.6%

Top symptoms (% of reports):

  • Cough: 45.2%
  • Headache: 34.2%
  • Sore Throat: 29.8%
  • Fever: 29.0%
  • Runny nose: 26.6%
More Analyses

Risk Factors

About risk factors

  • Pregnant cases: 1,112
  • Health care workers4: 5,591
  • Deceased health care workers: 5
  • Recovered health care workers: 5,543
More Analyses

Important Notes

  1. Data about COVID-19 cases and contacts are extracted from PHIMS.
  2. Numbers are subject to change. Missed events in the current report due to reporting delays will be included in later reports when data become available.
  3. ICU admissions were also included in hospitalizations.
  4. Health care workers include personnels in hospitals, long-term care settings, community health clinics and services (including agency staff), and diagnostic/laboratory services.

Cases

Figure 1. Cases of COVID-19 by Week of Public Health Report Date, Manitoba, August 23, 2020 – February 12, 2022

Note. Deaths due to COVID-19 were aligned by week of death date.
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Figure 2. Sex and Age Distribution of COVID-19 Cases, March 1, 2020 – February 12, 2022

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Figure 3. Incidence Rate (/10,000 Population) of COVID-19 Cases by Age Group and Week of Public Health Report Date, Manitoba, August 23, 2020 – February 12, 2022

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Figure 4. Cases of COVID-19 by Health Region and Public Health Report Date, Manitoba, March 1, 2021 – February 12, 2022

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Table 1. Cases of COVID-19 and Incidence Rate (/10,000 population) by Health Region, Manitoba, March 13, 2020 – February 12, 2022

Health Region Total Cases Cases this week Incidence Rate Age-standardized Incidence Rate *
Winnipeg RHA 70416 1044 13.2 13.3
Southern Health-Santé Sud 18207 255 12.0 12.1
Interlake-Eastern RHA 10185 286 21.4 22.7
Prairie Mountain Health 12298 400 23.2 23.4
Northern Health Region 15839 629 81.4 79.7

Note: * Age-standardized rates are used to account for differences in the age structure in health regions. The whole Manitoba population is used as the standard population.

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Figure 5. Vaccination Status in Monthly New Cases, Hospital Admissions, ICU Admissions, and Deaths, Manitoba, January 1, 2022 – January 31, 2022


Note: Content is updated monthly from January 2022 onwards. Hospital admissions include ICU admissions.

Unvaccinated Case: Individuals not vaccinated or vaccinated 0–13 days following the first dose of a COVID-19 vaccine. Partially Vaccinated Case: Individuals vaccinated >=14 days following the first dose of a 2-dose series COVID-19 vaccine if only one dose was received and 0-13 days following the second dose if two doses were received. Fully Vaccinated Case: Individuals vaccinated >=14 days following the second dose of a 2-dose series or first dose of a 1-dose series of a COVID-19 vaccine. After First Booster Dose: Individuals vaccinated >=14 days following one additional dose after completion of primary series.

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Table 2. COVID-19 Cases After Vaccination, Manitoba, December 16, 2020 – February 12, 2022

2a. Cases and Incidence Rate (/100,000 Vaccinated Individuals) After Vaccination, Overall

Partially vaccinated Incidence Rate Fully Vaccinated Incidence Rate After First Booster Dose Incidence Rate
Asymptomatic 2,219 192.7 17,629 1633.7 3,474 625.6
Symptomatic 3,303 286.8 22,460 2081.4 4,180 752.8
All 5,522 479.5 40,089 3715.1 7,654 1378.4

2b. Cases After Infection by Age Group

Partially vaccinated % Fully vaccinated % After First Booster Dose %
5-11 2,217 40.1% 97 0.2% 0 0.0%
12-19 329 6.0% 4,866 12.1% 74 1.0%
20-29 503 9.1% 9,655 24.1% 861 11.2%
30-39 519 9.4% 8,159 20.4% 1,182 15.4%
40-49 484 8.8% 7,338 18.3% 1,488 19.4%
50-59 558 10.1% 5,233 13.1% 1,350 17.6%
60-69 470 8.5% 2,664 6.6% 953 12.5%
70-79 274 5.0% 1,233 3.1% 632 8.3%
80+ 170 3.1% 844 2.1% 1,114 14.6%
Total 5,524 100% 40,089 100% 7,654 100%

2c. Severe Cases After Infection

Partially vaccinated % Fully vaccinated % After First Booster Dose %
Hospital Admissions
5-11 8 1.9% 0 0.0% 0 0.0%
12-19 6 1.5% 70 3.9% 2 0.4%
20-29 32 7.8% 208 11.6% 12 2.5%
30-39 44 10.7% 203 11.3% 29 6.0%
40-49 29 7.0% 157 8.8% 23 4.8%
50-59 73 17.7% 196 10.9% 46 9.6%
60-69 87 21.1% 288 16.1% 103 21.4%
70+ 133 32.3% 671 37.4% 266 55.3%
Total hospitalizations 412 100% 1,793 100% 481 100%
ICU Admissions
5-11 1 1.4% 0 0.0% 0 0.0%
12-19 1 1.4% 2 1.4% 0 0.0%
20-29 1 1.4% 8 5.7% 1 3.0%
30-39 3 4.3% 8 5.7% 1 3.0%
40-49 3 4.3% 23 16.3% 3 9.1%
50-59 17 24.6% 25 17.7% 4 12.1%
60-69 23 33.3% 38 27.0% 11 33.3%
70+ 20 29.0% 37 26.2% 13 39.4%
Total ICU admissions 69 100% 141 100% 33 100%
Deaths
12-19 0 0.0% 0 0.0% 0 0.0%
20-29 0 0.0% 1 0.6% 0 0.0%
30-39 1 1.6% 1 0.6% 0 0.0%
40-49 0 0.0% 4 2.3% 1 1.4%
50-59 14 23.0% 14 7.9% 0 0.0%
60-69 15 24.6% 34 19.2% 6 8.1%
70+ 31 50.8% 123 69.5% 67 90.5%
Total deaths 61 100% 177 100% 74 100%

2d. Cases After Vaccination by Sex

Partially vaccinated % Fully vaccinated % After First Booster Dose %
Infections in females 2,833 51.3% 21,044 52.5% 4,731 61.8%
Infections in males 2,690 48.7% 19,033 47.5% 2,922 38.2%
Total 5,523 100% 40,077 100% 7,653 100%


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Testing

Figure 6. Average Daily Testing Volume and Positivity (%) for COVID-19 by Week of Specimen Receiving Date, Manitoba, August 23, 2020 – February 12, 2022

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Table 3. Cumulative National Testing Volume and Positivity (%) for COVID-19 by Province/Territory, Canada, March 13, 2020 – February 12, 2022

Province Confirmed Cases Tests Completed Test Rate in Population (Estimated %) Positivity Rate (Estimated %)
Alberta 514,165 6,777,232 155.8% 7.6%
British Columbia 338,585 5,529,166 109.6% 6.1%
Manitoba 125,844 1,439,706 105.5% 8.7%
New Brunswick 32,307 710,586 91.8% 4.5%
Newfoundland and Labrador 19,710 556,298 106.4% 3.5%
Northwest Territories 7,343 39,945 88.9% 18.4%
Nova Scotia 42,105 1,738,247 179.8% 2.4%
Nunavut 2,114 33,285 86.1% 6.4%
Ontario 1,067,511 22,680,224 156.6% 4.7%
Prince Edward Island 9,969 255,799 164.3% 3.9%
Quebec 894,613 16,082,494 190.4% 5.6%
Saskatchewan 123,258 1,459,675 124.6% 8.4%
Yukon 3,302 9,129 22.5% 36.2%
Canada 3,180,839 57,311,862 153.2% 5.6%

Note. National testing data are collected daily from the national Coronavirus disease (COVID-19) Outbreak update webpage.

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Severity

Figure 7. Severe Outcomes of COVID-19 by Week of Public Health Report Date, Manitoba, August 23, 2020 – February 12, 2022

Note. ICU admissions are not included in the hospital admissions.

Figure 8. Age Distribution of Severe COVID-19 Cases Compared to All Cases, Manitoba, March 13, 2020 – February 12, 2022

Figure 9. Percentage of COVID-19 Cases With Underlying Illnesses, Manitoba, March 13, 2020 – February 12, 2022

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

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Risk Factors

Table 4. Source of Infection in Health Care Workers with Non-missing Information, Manitoba, March 13, 2020 – February 12, 2022

Source of Infection Cases Percentage
Close contact of known case 2922 52.3%
Pending 317 5.7%
Travel 98 1.8%
Unknown 2254 40.3%
All Cases 5591

Table 5. Roles of Health Care Workers with Non-missing Information, Manitoba, March 13, 2020 – February 12, 2022

Role Cases Percentage
Allied Health, Health Professionals, and Support Staff 3585 64.1%
Nurse/Licensed Practical Nurse 1291 23.1%
Not Identified 500 8.9%
Physician/Physician in training 214 3.8%
All Cases 5591

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Outbreaks

Figure 10. Weekly COVID-19 Outbreaks, Manitoba, 2018 – 2022

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Contacts

Table 6. COVID-19 Contact Summary in All Cases, Manitoba, March 13, 2020 – February 12, 2022

Regional Health Authority Cases Median Contacts Minimum Contacts Maximum Contacts
Winnipeg Health 70416 0 0 249
Southern Health - Sante Sud 18207 1 0 69
Northern Health 15839 0 0 121
Prairie Mountain Health 12298 0 0 134
Interlake-Eastern Health 10185 0 0 76

Table 7. COVID-19 Contact Summary in New Cases Reported in Week 6, Manitoba, 2022

Regional Health Authority Cases Median Contacts Minimum Contacts Maximum Contacts
Winnipeg Health 1044 0 0 0
Northern Health 629 0 0 10
Prairie Mountain Health 400 0 0 1
Interlake-Eastern Health 286 0 0 1
Southern Health - Sante Sud 255 0 0 0

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Symptoms

Figure 11. Percentage of Symptoms Reported by COVID-19 Cases, Manitoba, March 13, 2020 – February 12, 2022

Note: Other symptoms include those less common symptoms such as sweating, runny eyes, itchy throat, etc.

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