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 1 (January 2 – January 8)

About epidemiological week

Data extracted up to 1:00 am on January 14, 2022
Next reporting date: January 24, 2022

COVID-19: High Activity

In Week 1, there were 15,926 laboratory-confirmed COVID-19 cases reported in Manitoba, an increase from 9,023 in the previous week. The volume of lab tests increased to on average 5,077 people tested for COVID-19 per day compared to 3,991 in the previous week, and the positivity rate of lab tests was 46.1%, an increase from 32.7% in the previous week.

In the 15,926 cases reported this week, 68% were reported from the Winnipeg Regional Health Authority and 10% were reported from the Southern Health - Santé Sud Regional Health Authority. The remaining cases were reported from Prairie Mountain Health Authority (9%), Interlake-Eastern Regional Health Authority (8%), and Northern Health Region (5%).

In all Manitoba residents, 80.8% of residents have been partially vaccinated and 74.7% have been fully vaccinated.

Cases

About cases

  • New cases: 15,926
  • Total cases: 99,997
  • Recovered cases: 68,971
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Testing

About testing

This week:

  • Average daily specimens: 5,077
  • Weekly positivity rate: 46.1%

Total:

  • Tested people: 688,292
  • Population tested: 50.4%
  • Specimens tested: 1,340,436
  • Positivity rate: 8.5%
More Analyses

Severity

About severity

Severe outcomes associated with COVID-19:

  • Hospitalizations: 5,655
    • ICU admissions3: 1,157
  • Deaths: 1,432
More Analyses

Outbreaks

About outbreaks

2022 COVID-19 outbreaks: 20

  • Outbreaks in long-term care facilities: 13
  • Outbreaks in schools: 0

Total COVID-19 outbreaks: 343

  • Total outbreaks in long-term care facilities: 162
  • Total outbreaks in schools: 33
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Exposure

About exposure

Source of infection in cases (% of total):

  • Travel: 1.6%
  • Close contact to cases: 46.6%
  • Unknown: 26.5%
  • Pending: 25.2%

Top five outbreak/cluster/special investigation settings:4

  • Industrial setting: 100.0%
  • Workplace: 34.9%
  • Small/remote/isolated community: 15.6%
  • Long term care facility: 11.1%
  • Food services establishments: 10.1%
More Analyses

Transmission and Acquisition

About transmission and acquisition

Top five transmission settings in all cases:5

  • Household: 53.6%
  • Social gathering: 12.1%
  • Workplace: 9.6%
  • School: 3.1%
  • Transportation: 2.9%

Top five acquisition settings in cases with unknown source of infection:6

  • Household: 43.8%
  • Workplace: 17.8%
  • Social gathering: 9.9%
  • Retail: 5.9%
  • Food services establishments: 4.4%
More Analyses

Symptoms

About symptoms

Symptomatic cases: 68.1%

Top symptoms (% of reports):

  • Cough: 51.1%
  • Headache: 39.4%
  • Sore Throat: 33.6%
  • Fever: 33.0%
  • Runny nose: 29.6%
More Analyses

Risk Factors

About risk factors

  • Pregnant cases: 981
  • Health care workers7: 4,771
  • Deceased health care workers: 5
  • Recovered health care workers: 3,133
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. The top five settings where cases are found to be linked with an outbreak or cluster or special investigation.
  5. Transmission settings include those settings exposed during a case’s communicability period, i.e., 48 hours prior to the development of overt symptoms in the case until the case is classified as no longer infectious. Percentages are calculated using total cases counts as a denominator. Categories are NOT mutually exclusive.
  6. Acquisition settings include those settings exposed during a case’s incubation period, i.e., 14 days before symptom onset date. Percentages are calculated using community-transmitted case counts as a denominator for acquisition settings. Categories are NOT mutually exclusive.
  7. 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 8, 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 8, 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 8, 2022

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Figure 4. Cases of COVID-19 by Health Region and Public Health Report Date, Manitoba, February 1, 2021 – January 8, 2022

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Table 1. Cases of COVID-19 by Health Region, Manitoba, March 13, 2020 – January 8, 2022

Health Region Total Cases Cases this week Incidence Rate Age-standardized Incidence Rate *
Winnipeg RHA 57160 10800 136.5 135.3
Southern Health-Santé Sud 15490 1517 71.6 72.2
Interlake-Eastern RHA 7627 1255 93.8 98.2
Prairie Mountain Health 8500 1455 84.3 87.1
Northern Health Region 11220 899 116.3 116.9

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 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 8, 2022

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

Partially vaccinated % Incidence Rate Fully vaccinated % Incidence Rate
AZ/COVISHIELD 421 10.5% 512.1 145 0.5% 1822.1
Janssen N/A N/A N/A 34 0.1% 2401.2
Moderna 663 16.6% 314.7 4,912 18.4% 2535.5
Pfizer 1,761 44.0% 226.8 15,157 56.8% 2422.2
Pfizer Pediatric 1,154 28.9% 1905.2 3 0.0% 240.0
Mixed vaccine products N/A N/A N/A 6,415 24.1% 5797.4
Total 3,999 100% 220.5 26,666 100% 1505.2

2b. Cases After Infection by Age Group

Partially vaccinated % Fully vaccinated %
05-11 1,159 29.0% 4 0.0%
12-19 233 5.8% 3,040 11.4%
20-29 400 10.0% 6,715 25.2%
30-39 400 10.0% 5,324 20.0%
40-49 436 10.9% 4,910 18.4%
50-59 512 12.8% 3,554 13.3%
60-69 448 11.2% 1,829 6.9%
70-79 254 6.3% 801 3.0%
80+ 160 4.0% 489 1.8%
Total 4,002 100% 26,666 100%

2c. Severe Cases After Infection

Partially vaccinated % Fully vaccinated %
Hospitalizations (including ICU admissions)
05-11 2 0.8% 0 0.0%
12-19 3 1.1% 23 3.5%
20-29 16 6.0% 51 7.9%
30-39 19 7.2% 41 6.3%
40-49 17 6.4% 47 7.3%
50-59 44 16.6% 67 10.3%
60-69 59 22.3% 110 17.0%
70+ 105 39.6% 309 47.7%
Total hospitalizations 265 100% 648 100%
Deaths
12-19 0 0.0% 0 0.0%
20-29 0 0.0% 0 0.0%
30-39 1 1.9% 1 1.1%
40-49 0 0.0% 2 2.3%
50-59 12 22.6% 8 9.1%
60-69 13 24.5% 18 20.5%
70+ 27 50.9% 59 67.0%
Total deaths 53 100% 88 100%

2d. Cases After Vaccination by Sex

Partially vaccinated % Fully vaccinated %
Infections in females 2,073 51.8% 13,893 52.1%
Infections in males 1,929 48.2% 12,768 47.9%
Total 4,002 100% 26,661 100%


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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 8, 2022

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Table 3. Cumulative National Testing Volume and Positivity (%) for COVID-19 by Province/Territory, Canada, March 13, 2020 – January 8, 2022

Province Confirmed Cases Tests Completed Test Rate in Population (Estimated %) Positivity Rate (Estimated %)
Alberta 395,252 6,445,602 148.1% 6.1%
British Columbia 276,875 5,120,945 101.5% 5.4%
Manitoba 94,850 1,350,362 99.0% 7.0%
New Brunswick 19,857 643,611 83.2% 3.1%
Newfoundland and Labrador 7,537 477,668 91.4% 1.6%
Northwest Territories 2,801 38,491 85.7% 7.3%
Nova Scotia 23,943 1,611,229 166.7% 1.5%
Nunavut 977 26,012 67.3% 3.8%
Ontario 853,270 21,468,476 148.2% 4.0%
Prince Edward Island 2,463 252,984 162.5% 1.0%
Quebec 712,358 15,037,137 178.0% 4.7%
Saskatchewan 89,821 1,344,280 114.8% 6.7%
Yukon 2,125 9,129 22.5% 23.3%
Canada 2,482,142 53,826,002 143.9% 4.6%

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 – January 8, 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 8, 2022

Figure 9. Percentage of COVID-19 Cases With Underlying Illnesses, Manitoba, March 13, 2020 – January 8, 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 8, 2022

Source of Infection Cases Percentage
Close contact of known case 2540 53.2%
Pending 293 6.1%
Travel 73 1.5%
Unknown 1865 39.1%
All Cases 4771

Table 5. Roles of Health Care Workers with Non-missing Information, Manitoba, March 13, 2020 – January 8, 2022

Role Cases Percentage
Allied Health, Health Professionals, and Support Staff 3119 65.4%
Nurse/Licensed Practical Nurse 1121 23.5%
Not Identified 338 7.1%
Physician/Physician in training 192 4%
All Cases 4771

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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 8, 2022

Regional Health Authority Cases Median Contacts Minimum Contacts Maximum Contacts
Winnipeg Health 57160 1 0 249
Southern Health - Sante Sud 15490 1 0 69
Northern Health 11220 0 0 121
Prairie Mountain Health 8500 1 0 134
Interlake-Eastern Health 7627 0 0 76

Table 7. COVID-19 Contact Summary in New Cases Reported in Week 1, Manitoba, 2022

Regional Health Authority Cases Median Contacts Minimum Contacts Maximum Contacts
Winnipeg Health 10800 0 0 3
Southern Health - Sante Sud 1517 0 0 1
Prairie Mountain Health 1455 0 0 1
Interlake-Eastern Health 1255 0 0 0
Northern Health 899 0 0 36

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Figure 11. Percentage of COVID-19 Cases Linked to Top-five Cluster/Outbreak/Special Investigation Settings, Manitoba, January 24, 2021 – January 8, 2022

Note: COVID-19 public health orders in Manitoba since January 23, 2021: PH order #1 (effective January 23, 2021), PH order #2 (effective March 5, 2021), PH order #3 (effective March 26, 2021), PH order #4 (effective April 19, 2021), PH order #5 (effective April 28, 2021), PH order #6 (effective May 9, 2021), PH order #7 (effective May 22, 2021), PH order #8 (effective May 29, 2021), PH order #9 (effective June 12, 2021), PH order #10 (effective June 26, 2021), PH order #11: (effective July 17, 2021), PH order #12: (effective August 7, 2021), PH order #13: (effective August 28, 2021), PH order #14: (effective October 5, 2021), PH order #15: (effective November 13, 2021), PH order #16: (effective December 21, 2021). Content of Public Health Orders

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Figure 12. Percentage of Total COVID-19 Cases Exposed to Top-five Transmission Settings, Manitoba, January 24, 2021 – January 8, 2022

Note: COVID-19 public health orders in Manitoba since January 23, 2021: PH order #1 (effective January 23, 2021), PH order #2 (effective March 5, 2021), PH order #3 (effective March 26, 2021), PH order #4 (effective April 19, 2021), PH order #5 (effective April 28, 2021), PH order #6 (effective May 9, 2021), PH order #7 (effective May 22, 2021), PH order #8 (effective May 29, 2021), PH order #9 (effective June 12, 2021), PH order #10 (effective June 26, 2021), PH order #11: (effective July 17, 2021), PH order #12: (effective August 7, 2021), PH order #13: (effective August 28, 2021), PH order #14: (effective October 5, 2021), PH order #15: (effective November 13, 2021), PH order #16: (effective December 21, 2021). Content of Public Health Orders

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Figure 13. Percentage of Community-transmitted COVID-19 Cases Exposed to Top-five Acquisition Settings, Manitoba, January 24, 2021 – January 8, 2022

Note: COVID-19 public health orders in Manitoba since January 23, 2021: PH order #1 (effective January 23, 2021), PH order #2 (effective March 5, 2021), PH order #3 (effective March 26, 2021), PH order #4 (effective April 19, 2021), PH order #5 (effective April 28, 2021), PH order #6 (effective May 9, 2021), PH order #7 (effective May 22, 2021), PH order #8 (effective May 29, 2021), PH order #9 (effective June 12, 2021), PH order #10 (effective June 26, 2021), PH order #11: (effective July 17, 2021), PH order #12: (effective August 7, 2021), PH order #13: (effective August 28, 2021), PH order #14: (effective October 5, 2021), PH order #15: (effective November 13, 2021), PH order #16: (effective December 21, 2021). Content of Public Health Orders

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Symptoms

Figure 14. Percentage of Symptoms Reported by COVID-19 Cases, Manitoba, March 13, 2020 – January 8, 2022

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

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