Provincial Respiratory Surveillance Report

COVID-19 and Seasonal Influenza

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.

Epidemiology and Surveillance also continues to monitor the activity of seasonal influenza in Manitoba during this pandemic. During the 2020–2021 influenza season, routine reporting of seasonal influenza is included in this weekly report.

In this weekly respiratory surveillance report, we provide regular updates about the current activity of COVID-19 and seasonal influenza in Manitoba with overall objectives:

• To understand COVID-19 within the respiratory context;
• To present a detailed overview about COVID-19 cases and contacts; and
• To continue monitor and report on seasonal influenza during the pandemic.

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.

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Week 6 (February 7 – February 13)

About epidemiological week

Data extracted up to 4:00am on February 19, 2021
Next reporting date: March 1, 2021

COVID-19: Decreasing Activity In Week 6, there were 520 laboratory-confirmed COVID-19 cases reported in Manitoba, a decrease from 663 in the previous week. The volume of lab tests decreased to on average 1,618 people tested for COVID-19 per day compared to 1,755 in the previous week, and the positivity rate of lab tests was 5.1%, a decrease from 6.1% in the previous week. In an examination of the 520 cases reported this week, majority (42%) were reported from the Winnipeg Regional Health and 38% were reported from the Northern Health Region. The remaining cases were reported from Southern Health - Santé Sud Regional Health Authority (12%), Interlake-Eastern Regional Health Authority (5%) and Prairie Mountain Health Authority (3%). Overall, older adults and those with underlying illnesses are at higher risk for severe outcomes as a result of COVID-19 infection. As of February 13, a total of 55,065 doses of COVID19 vaccines have been administered to the residents of Manitoba.		Cases About cases New cases: 520 Total cases: 30,766 Recovered cases: 29,172 More Analyses Epi curve Daily Case Counts (.csv) Age and sex Health region National update
Testing About testing This week Average daily specimens: 1,618 Weekly positivity rate: 5.1% Total Tested people: 355,151 Population tested: 26% Specimens tested: 500,845 Positivity rate: 6.6% More Analyses Provincial testing National testing	Severity About severity Severe outcomes associated with COVID-19: Hospitalizations: 2,177 ICU admissions: 405 Deaths: 879 More Analyses Severe Outcomes Age Underlying Illness	Outbreaks About outbreaks COVID-19 outbreaks: 187 Outbreaks in long-term care facilities: 99 Outbreaks in schools: 3 More Analyses Check trend Outbreak list
Exposure About exposure Source of infection in cases (% of total) Travel: 1.3% Close contact to cases: 52.4% Unknown: 23.4% Pending: 22.9% Close contacts Top contact type: Household exposure More Analyses Contacts	Risk Factors About risk factors Pregnant cases: 332 Health care workers**: 1,933 Deceased Health care workers: 2 Recovered health care workers: 1,907 More Analyses Health care workers	Symptoms About symptoms Symptomatic cases: 71.9% Top symptoms (% of reports) Cough: 44.1% Headache: 37.4% Fever: 30.0% Muscle pain (myalgia): 28.3% Sore Throat: 26.2% More Analyses All symptoms
Seasonal Influenza: Low Activity A large number of respiratory specimens continued to be tested for seasonal influenza. There were no laboratory-confirmed influenza cases reported in Manitoba in Week 6. As of February 13, 31.5% of residents in Manitoba have been immunized with seasonal influenza vaccines.		Influenza Cases About cases New cases this week Influenza A: 0 Influenza B: 0 Total cases from September 1, 2020 Influenza A: 0 Influenza B: 1
Syndromic Indicators: Low Activity The respiratory activity levels in the community, primary care and emergency rooms continued to be low for this time of a year. The number of respiratory outbreaks reported that were not due to COVID-19 remains low.		FluWatchers About FluWatchers Participants reporting: 595 Reporting fever and cough: 0.3% Check Trend
Physician Visits About sentinal physicians Influenza Like Illness (ILI) Visits to sentinel physicians: 0.0% Check Trend	Antiviral About Antiviral Units of antiviral dispensed from pharmacies: 0	ED Visits About emergency room visits Average daily respiratory visits to emergency department (ED): 74 Check Trend
Important Notes Data about COVID-19 cases and contacts aswell as influenza cases are extracted from PHIMS. 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. *ICU admissions were also included in hospitalizations. **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, 2020 – 2021

Note. Deaths due to COVID-19 were aligned by week of death date.
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Figure 2. Cases of COVID-19 by Sex and Age Group, Manitoba, 2020 – 2021

Figure 3. Cases of COVID-19 by Health Region and Public Health Report Date, Manitoba, 2020 – 2021

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Table 1. Cases of COVID-19 by Health Region, Manitoba, 2020 – 2021

Health Region	Cases	Percentage
Winnipeg RHA	17265	56.1%
Southern Health-Santé Sud	4733	15.4%
Interlake-Eastern RHA	2362	7.7%
Prairie Mountain Health	2046	6.7%
Northern Health Region	4360	14.2%

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Testing

Figure 4. Average Daily Testing Volume and Positivity (%) for COVID-19 by Week of Specimen Receiving Date, Manitoba, 2020 – 2021

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Table 2. Cumulative National Testing Volume and Positivity (%) for COVID-19 by Province/Territory, Canada, 2020 – 2021

Province	Confirmed Cases	Tests Completed	Test Rate in Population (Estimated %)	Positivity Rate (Estimated %)
Alberta	128,235	3,269,415	75.1%	3.9%
British Columbia	72,750	1,799,600	35.7%	4.0%
Manitoba	30,588	502,204	36.8%	6.1%
New Brunswick	1,382	221,677	28.6%	0.6%
Newfoundland and Labrador	660	153,956	29.4%	0.4%
Northwest Territories	38	12,950	28.8%	0.3%
Nova Scotia	1,590	298,637	30.9%	0.5%
Nunavut	303	8,044	20.8%	3.8%
Ontario	283,587	10,059,985	69.5%	2.8%
Prince Edward Island	114	95,410	61.3%	0.1%
Quebec	274,831	5,836,593	69.1%	4.7%
Saskatchewan	26,145	534,478	45.6%	4.9%
Yukon	70	7,825	19.3%	0.9%
Canada	820,306	22,800,850	61.0%	3.6%

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

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Severity

Figure 5. Severe Outcomes of COVID-19 by Week of Public Health Report Date, Manitoba, 2020 – 2021

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 – 2021

Figure 7. Percentage of COVID-19 Cases With Underlying Illnesses, Manitoba, 2020 – 2021

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 3. Source of Infection in Health Care Workers with Non-missing Information, Manitoba, 2020 – 2021

Source of infection	Cases	Percentage
Close contact of known case	1155	59.8%
Pending	185	9.6%
Travel	15	0.8%
Unknown	578	29.9%
All Cases	1933

Table 4. Roles of Health Care Workers with Non-missing Information, Manitoba, 2020 – 2021

Role	Cases	Percentage
Allied Health, Health Professio	1123	58.1%
Nurse/Licensed Practical Nurse	547	28.3%
Not identified	152	7.9%
Physician/Physician in training	72	3.7%
First Responder	39	2%
All Cases	1933

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Outbreaks

Figure 8. Weekly Respiratory and COVID-19 Outbreaks, Manitoba, 2018 – 2021

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Contacts

Table 5. COVID-19 Contact Summary Table, Manitoba, 2020 – 2021

Regional Health Authority	Active Cases	Median Contacts	Min contacts	Max contacts
Northern Health	299	0	0	31
Winnipeg Health	214	2	0	62
Interlake-Eastern Health	138	0	0	12
Southern Health - Sante Sud	42	0	0	15
Prairie Mountain Health	20	0	0	7

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Symptoms

Figure 9. Percentage of Symptoms Reported by COVID-19 Cases, Manitoba, 2020 – 2021

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

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FluWatchers

Figure 10. Weekly FluWatchers Participants and Percentage Reporting Fever and Cough, Manitoba, 2021

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Physician Visits

Figure 11. Weekly Percentage of ILI Related Visits to Sentinel Physicians, Manitoba, 2021

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ED Visits

Figure 12. Weekly Respiratory Visits to Emergency Department, Winnipeg Regional Health Authority, Manitoba, 2018 – 2021

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Epidemiology and Surveillance

epiCOVID@gov.mb.ca

Other Epidemiology and Surveillance reports

https://www.gov.mb.ca/health/publichealth/surveillance/index.html