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 8 (February 20 – February 26)

About epidemiological week

Data extracted up to 1:00 am on March 4, 2022
Next reporting date: March 14, 2022

COVID-19: Decreasing Activity

In Week 8, there were 1,589 laboratory-confirmed COVID-19 cases reported in Manitoba, a decrease from 1,951 in the previous week. The volume of lab tests decreased to on average 1,160 people tested for COVID-19 per day compared to 1,303 in the previous week, and the positivity rate of lab tests was 15.6%, a decrease from 18.4% in the previous week.

In the 1,589 cases reported this week, 33% were reported from the Northern Health Region and 26% were reported from the Winnipeg Regional Health Authority. The remaining cases were reported from Prairie Mountain Health Authority (19%), Interlake-Eastern Regional Health Authority (14%), and Southern Health - Santé Sud Regional Health Authority (8%).

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: 1,589
  • Total cases: 130,724
  • Recovered cases: 122,695
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Testing

About testing

This week:

  • Average daily specimens: 1,160
  • Weekly positivity rate: 15.6%

Total:

  • Tested people: 710,981
  • Population tested: 52.1%
  • Specimens tested: 1,425,264
  • Positivity rate: 9.6%
More Analyses

Severity

About severity

Severe outcomes associated with COVID-19:

  • Hospital admissions: 8,093
    • ICU admissions3: 1,377
  • Deaths: 1,685
More Analyses

Outbreaks

About outbreaks

2022 COVID-19 outbreaks: 92

  • Outbreaks in long-term care facilities: 46
  • Outbreaks in schools: 0

Total COVID-19 outbreaks: 416

  • Total outbreaks in long-term care facilities: 196
  • Total outbreaks in schools: 33
More Analyses

Exposure

About exposure

Source of infection in cases (% of total):

  • Travel: 2.0%
  • Close contact to cases: 41.8%
  • Unknown: 26.2%
  • Pending: 30.0%
More Analyses

Symptoms

About symptoms

Symptomatic cases: 55.3%

Top symptoms (% of reports):

  • Cough: 44.7%
  • Headache: 33.7%
  • Sore Throat: 29.4%
  • Fever: 28.6%
  • Runny nose: 26.2%
More Analyses

Risk Factors

About risk factors

  • Pregnant cases: 1,138
  • Health care workers4: 5,591
  • Deceased health care workers: 5
  • Recovered health care workers: 5,577
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 26, 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 26, 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 26, 2022

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Figure 4. Cases of COVID-19 by Health Region and Public Health Report Date, Manitoba, March 1, 2021 – February 26, 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 26, 2022

Health Region Total Cases Cases this week Incidence Rate Age-standardized Incidence Rate *
Winnipeg RHA 71,547 422 5.3 5.3
Southern Health-Santé Sud 18,546 126 5.9 6.2
Interlake-Eastern RHA 10,712 216 16.1 17.0
Prairie Mountain Health 12,982 297 17.2 16.9
Northern Health Region 16,937 528 68.3 67.3

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 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 26, 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 2,294 198.4 18,510 1690.7 3,908 680.6
Symptomatic 3,352 290.0 22,912 2092.8 4,856 845.7
All 5,646 488.4 41,422 3783.5 8,764 1526.3

2b. Cases After Infection by Age Group

Partially vaccinated % Fully vaccinated % After First Booster Dose %
5-11 2,276 40.3% 151 0.4% 0 0.0%
12-19 337 6.0% 5,078 12.3% 100 1.1%
20-29 515 9.1% 9,923 24.0% 980 11.2%
30-39 538 9.5% 8,474 20.5% 1,370 15.6%
40-49 488 8.6% 7,559 18.2% 1,700 19.4%
50-59 563 10.0% 5,360 12.9% 1,497 17.1%
60-69 474 8.4% 2,733 6.6% 1,094 12.5%
70-79 278 4.9% 1,265 3.1% 745 8.5%
80+ 178 3.2% 878 2.1% 1,278 14.6%
Total 5,647 100% 41,421 100% 8,764 100%

2c. Severe Cases After Infection

Partially vaccinated % Fully vaccinated % After First Booster Dose %
Hospital Admissions
5-11 9 2.1% 2 0.1% 0 0.0%
12-19 7 1.6% 82 4.2% 4 0.7%
20-29 35 8.1% 238 12.1% 17 2.9%
30-39 49 11.3% 238 12.1% 41 6.9%
40-49 30 6.9% 176 9.0% 39 6.5%
50-59 76 17.5% 215 11.0% 54 9.1%
60-69 88 20.3% 307 15.7% 120 20.1%
70+ 140 32.3% 703 35.8% 321 53.9%
Total hospitalizations 434 100% 1,961 100% 596 100%
ICU Admissions
5-11 1 1.4% 0 0.0% 0 0.0%
12-19 1 1.4% 2 1.3% 1 2.4%
20-29 1 1.4% 11 7.1% 1 2.4%
30-39 3 4.3% 10 6.5% 1 2.4%
40-49 3 4.3% 24 15.6% 6 14.3%
50-59 18 25.7% 28 18.2% 4 9.5%
60-69 23 32.9% 41 26.6% 13 31.0%
70+ 20 28.6% 38 24.7% 16 38.1%
Total ICU admissions 70 100% 154 100% 42 100%
Deaths
12-19 0 0.0% 0 0.0% 0 0.0%
20-29 1 1.6% 1 0.5% 0 0.0%
30-39 1 1.6% 1 0.5% 0 0.0%
40-49 0 0.0% 5 2.6% 1 1.1%
50-59 14 22.6% 14 7.4% 1 1.1%
60-69 15 24.2% 38 20.0% 8 9.2%
70+ 31 50.0% 131 68.9% 77 88.5%
Total deaths 62 100% 190 100% 87 100%

2d. Cases After Vaccination by Sex

Partially vaccinated % Fully vaccinated % After First Booster Dose %
Infections in females 2,903 51.4% 21,723 52.5% 5,402 61.6%
Infections in males 2,744 48.6% 19,682 47.5% 3,361 38.4%
Total 5,647 100% 41,405 100% 8,763 100%


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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 26, 2022

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Table 3. Cumulative National Testing Volume and Positivity (%) for COVID-19 by Province/Territory, Canada, March 13, 2020 – February 26, 2022

Province Confirmed Cases Tests Completed Test Rate in Population (Estimated %) Positivity Rate (Estimated %)
Alberta 524,381 6,827,804 156.9% 7.7%
British Columbia 347,331 5,634,086 111.6% 6.2%
Manitoba 130,277 1,455,719 106.7% 8.9%
New Brunswick 36,417 728,188 94.1% 5.0%
Newfoundland and Labrador 23,147 573,650 109.7% 4.0%
Northwest Territories 8,682 40,153 89.4% 21.6%
Nova Scotia 44,908 1,763,754 182.4% 2.5%
Nunavut 2,668 35,332 91.4% 7.6%
Ontario 1,096,357 22,905,481 158.1% 4.8%
Prince Edward Island 13,372 256,386 164.7% 5.2%
Quebec 918,821 16,381,936 193.9% 5.6%
Saskatchewan 127,187 1,477,345 126.2% 8.6%
Yukon 3,426 9,129 22.5% 37.5%
Canada 3,276,987 58,089,039 155.3% 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 26, 2022

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

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Figure 8. Age Distribution of Severe COVID-19 Cases Compared to All Cases, Manitoba, March 13, 2020 – February 26, 2022

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Figure 9. Percentage of COVID-19 Cases With Underlying Illnesses, Manitoba, March 13, 2020 – February 26, 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 26, 2022

Source of Infection Cases Percentage
Close contact of known case 2,923 52.3%
Pending 319 5.7%
Travel 98 1.8%
Unknown 2,251 40.3%
All Cases 5,591

Table 5. Roles of Health Care Workers with Non-missing Information, Manitoba, March 13, 2020 – February 26, 2022

Role Cases Percentage
Allied Health, Health Professionals, and Support Staff 3,585 64.1%
Nurse/Licensed Practical Nurse 1,291 23.1%
Not Identified 500 8.9%
Physician/Physician in training 214 3.8%
All Cases 5,591

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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 26, 2022

Regional Health Authority Cases Median Contacts Minimum Contacts Maximum Contacts
Winnipeg Health 71,547 0 0 249
Southern Health-Santé Sud 18,546 1 0 69
Northern Health 16,937 0 0 121
Prairie Mountain Health 12,982 0 0 134
Interlake-Eastern Health 10,712 0 0 76

Table 7. COVID-19 Contact Summary in New Cases Reported in Week 8, Manitoba, 2022

Regional Health Authority Cases Median Contacts Minimum Contacts Maximum Contacts
Northern Health 528 0 0 1
Winnipeg Health 422 0 0 1
Prairie Mountain Health 297 0 0 0
Interlake-Eastern Health 216 0 0 0
Southern Health-Santé Sud 126 0 0 0

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Symptoms

Figure 11. Percentage of Symptoms Reported by COVID-19 Cases, Manitoba, March 13, 2020 – February 26, 2022

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

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