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 3 (January 16 – January 22)

About epidemiological week

Data extracted up to 1:00 am on January 28, 2022
Next reporting date: February 7, 2022

COVID-19: High Activity

In Week 3, there were 5,655 laboratory-confirmed COVID-19 cases reported in Manitoba, a decrease from 9,987 in the previous week. The volume of lab tests decreased to on average 2,516 people tested for COVID-19 per day compared to 3,709 in the previous week, and the positivity rate of lab tests was 32.8%, a decrease from 39.2% in the previous week.

In the 5,655 cases reported this week, 53% were reported from the Winnipeg Regional Health Authority and 15% were reported from the Northern Health Region. The remaining cases were reported from Prairie Mountain Health Authority (13%), Southern Health - Santé Sud Regional Health Authority (10%), and Interlake-Eastern Regional Health Authority (9%).

In all Manitoba residents, 80.8% of residents have been partially vaccinated and 74.4% have been fully vaccinated.

Cases

About cases

  • New cases: 5,655
  • Total cases: 115,628
  • Recovered cases: 87,475
More Analyses

Testing

About testing

This week:

  • Average daily specimens: 2,516
  • Weekly positivity rate: 32.8%

Total:

  • Tested people: 697,541
  • Population tested: 51.1%
  • Specimens tested: 1,374,912
  • Positivity rate: 9.1%
More Analyses

Severity

About severity

Severe outcomes associated with COVID-19:

  • Hospitalizations: 6,675
    • ICU admissions3: 1,248
  • Deaths: 1,534
More Analyses

Outbreaks

About outbreaks

2022 COVID-19 outbreaks: 61

  • Outbreaks in long-term care facilities: 31
  • Outbreaks in schools: 0

Total COVID-19 outbreaks: 384

  • Total outbreaks in long-term care facilities: 180
  • Total outbreaks in schools: 33
More Analyses

Exposure

About exposure

Source of infection in cases (% of total):

  • Travel: 1.8%
  • Close contact to cases: 44.0%
  • Unknown: 26.2%
  • Pending: 28.0%
More Analyses

Symptoms

About symptoms

Symptomatic cases: 61.1%

Top symptoms (% of reports):

  • Cough: 47.9%
  • Headache: 36.5%
  • Sore Throat: 31.6%
  • Fever: 30.8%
  • Runny nose: 28.1%
More Analyses

Risk Factors

About risk factors

  • Pregnant cases: 1,039
  • Health care workers4: 5,519
  • Deceased health care workers: 5
  • Recovered health care workers: 4,780
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 – January 22, 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 – January 22, 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 – January 22, 2022

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Figure 4. Cases of COVID-19 by Health Region and Public Health Report Date, Manitoba, February 1, 2021 – January 22, 2022

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Table 1. Cases of COVID-19 by Health Region, Manitoba, March 13, 2020 – January 22, 2022

Health Region Total Cases Cases this week Incidence Rate Age-standardized Incidence Rate *
Winnipeg RHA 65610 2970 37.5 37.6
Southern Health-Santé Sud 17124 562 26.5 26.8
Interlake-Eastern RHA 8992 551 41.2 42.7
Prairie Mountain Health 10463 711 41.2 41.7
Northern Health Region 13439 861 111.4 116.0

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, Non-ICU Hospital Admissions, ICU Admissions, and Deaths, Manitoba, December 19, 2021 – December 25, 2021


Note: Content is updated monthly from January 2022 onwards.

Unprotected Case: Individuals 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.

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Table 2. COVID-19 Cases After Vaccination, Manitoba, December 16, 2020 – January 22, 2022

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

Partially vaccinated % Incidence Rate Fully vaccinated % Incidence Rate
AZ/COVISHIELD 425 8.7% 515.5 193 0.5% 2364.3
Janssen N/A N/A N/A 47 0.1% 3069.9
Moderna 780 16.0% 368.2 7,489 21.0% 3847.2
Pfizer 1,944 39.9% 249.6 19,909 55.8% 3164.1
Pfizer Pediatric 1,724 35.4% 2550.8 34 0.1% 696.3
Mixed vaccine products N/A N/A N/A 7,978 22.4% 7157.6
Total 4,873 100% 257.3 35,650 100% 1933.3

2b. Cases After Infection by Age Group

Partially vaccinated % Fully vaccinated %
5-11 1,729 35.5% 35 0.1%
12-19 301 6.2% 4,190 11.8%
20-29 475 9.7% 8,729 24.5%
30-39 467 9.6% 7,192 20.2%
40-49 464 9.5% 6,575 18.4%
50-59 538 11.0% 4,707 13.2%
60-69 465 9.5% 2,421 6.8%
70-79 268 5.5% 1,091 3.1%
80+ 167 3.4% 710 2.0%
Total 4,874 100% 35,650 100%

2c. Severe Cases After Infection

Partially vaccinated % Fully vaccinated %
Hospitalizations (including ICU admissions)
5-11 4 1.3% 0 0.0%
12-19 4 1.3% 46 3.8%
20-29 24 8.1% 120 10.0%
30-39 27 9.1% 131 10.9%
40-49 20 6.7% 89 7.4%
50-59 49 16.4% 127 10.6%
60-69 62 20.8% 187 15.5%
70+ 108 36.2% 503 41.8%
Total hospitalizations 298 100% 1,203 100%
Deaths
12-19 0 0.0% 0 0.0%
20-29 0 0.0% 0 0.0%
30-39 1 1.8% 1 0.8%
40-49 0 0.0% 3 2.3%
50-59 14 24.6% 12 9.2%
60-69 14 24.6% 24 18.3%
70+ 28 49.1% 91 69.5%
Total deaths 57 100% 131 100%

2d. Cases After Vaccination by Sex

Partially vaccinated % Fully vaccinated %
Infections in females 2,501 51.3% 18,673 52.4%
Infections in males 2,373 48.7% 16,965 47.6%
Total 4,874 100% 35,638 100%


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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 – January 22, 2022

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Table 3. Cumulative National Testing Volume and Positivity (%) for COVID-19 by Province/Territory, Canada, March 13, 2020 – January 22, 2022

Province Confirmed Cases Tests Completed Test Rate in Population (Estimated %) Positivity Rate (Estimated %)
Alberta 466,616 6,629,724 152.4% 7.0%
British Columbia 308,079 5,329,956 105.6% 5.8%
Manitoba 114,021 1,401,799 102.7% 8.1%
New Brunswick 25,003 674,964 87.2% 3.7%
Newfoundland and Labrador 14,522 524,035 100.2% 2.8%
Northwest Territories 4,680 39,379 87.7% 11.9%
Nova Scotia 33,684 1,673,994 173.2% 2.0%
Nunavut 1,297 27,949 72.3% 4.6%
Ontario 984,359 22,149,074 152.9% 4.4%
Prince Edward Island 5,628 254,297 163.4% 2.2%
Quebec 824,942 15,600,291 184.7% 5.3%
Saskatchewan 106,328 1,395,832 119.2% 7.6%
Yukon 2,849 9,129 22.5% 31.2%
Canada 2,892,021 55,710,499 148.9% 5.2%

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 – January 22, 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 – January 22, 2022

Figure 9. Percentage of COVID-19 Cases With Underlying Illnesses, Manitoba, March 13, 2020 – January 22, 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 – January 22, 2022

Source of Infection Cases Percentage
Close contact of known case 2887 52.3%
Pending 310 5.6%
Travel 95 1.7%
Unknown 2227 40.4%
All Cases 5519

Table 5. Roles of Health Care Workers with Non-missing Information, Manitoba, March 13, 2020 – January 22, 2022

Role Cases Percentage
Allied Health, Health Professionals, and Support Staff 3553 64.4%
Nurse/Licensed Practical Nurse 1269 23%
Not Identified 486 8.8%
Physician/Physician in training 210 3.8%
All Cases 5519

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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 – January 22, 2022

Regional Health Authority Cases Median Contacts Minimum Contacts Maximum Contacts
Winnipeg Health 65610 0 0 249
Southern Health - Sante Sud 17124 1 0 69
Northern Health 13439 0 0 121
Prairie Mountain Health 10463 0 0 134
Interlake-Eastern Health 8992 0 0 76

Table 7. COVID-19 Contact Summary in New Cases Reported in Week 3, Manitoba, 2022

Regional Health Authority Cases Median Contacts Minimum Contacts Maximum Contacts
Winnipeg Health 2970 0 0 14
Northern Health 861 0 0 12
Prairie Mountain Health 711 0 0 0
Southern Health - Sante Sud 562 0 0 1
Interlake-Eastern Health 551 0 0 0

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Symptoms

Figure 11. Percentage of Symptoms Reported by COVID-19 Cases, Manitoba, March 13, 2020 – January 22, 2022

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

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