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, hospitalization and mortality data. Data are presented at the provincial and regional level. In this weekly report, we provide regular updates about the current activity of COVID-19 in Manitoba with a focus on severe outcomes (hospital admissions, intensive care unit admissions (ICU), and deaths).

Data are reported with a one-week delay for increased data accuracy, completeness and reliability. Updates or changes to this report occur regularly. It is published online at approximately 10:00am every Thursday.

Week 37 (September 11 – September 17)

About epidemiological week

Data extracted up to 1:00 am on September 21, 2022
Next reporting date: September 29, 2022

COVID-19: Decreased Activity In Week 37, there were 377 laboratory-confirmed COVID-19 cases reported in Manitoba, an increase from 342 in the previous week. The volume of lab tests decreased to on average 286 people tested for COVID-19 per day compared to 327 in the previous week, and the positivity rate of lab tests was 22.0%, an increase from 19.9% in the previous week. There were 87 hospital admissions associated with COVID-19 infection (including 11 ICU admissions), an increase from 65 admissions (including 10 ICU admissions) in the previous week. There were 2 deaths associated with COVID-19 infection, a decrease from 7 in the previous week. As of September 17, in all Manitoba residents aged 5 and older, 83.0% have been fully vaccinated. In residents aged 18 and older, 55.8% have received at least one additional dose. Wastewater surveillance data for the city of Winnipeg by september 12 indicated ongoing activity of COVID-19. An increase in activity level since the last week of August has been observed.		Cases About cases Cases this week: 377 Total cases: 149,622 More Analyses Epi curve Age and sex Incidence by age Health region Vaccination status Cases after infection Rate and risk of severe outcomes
Testing About testing This week Average daily specimens: 286 Weekly positivity rate: 22% Total Tested people: 739,435 Population tested: 54.2% Specimens tested: 1,541,532 Positivity rate: 10.1% More Analyses Provincial testing	Severity About severity associated with COVID-19 Severe outcomes this week Hospital admissions: 87 ICU admissions3: 11 Deaths4: 2 Total severe outcomes Hospital admissions: 12,285 ICU admissions: 1,747 Deaths: 2,143 More Analyses Severe outcomes Age Underlying illness	Outbreaks About outbreaks COVID-19 outbreaks this week Outbreaks in long-term care facilities: 3 Outbreaks in schools: 0 Total COVID-19 outbreaks Total outbreaks in long-term care facilities: 445 Total outbreaks in schools: 33 More Analyses Check trend Outbreak list
Important Notes Data about COVID-19 cases and contacts 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 included in hospital admissions, and include adult and pediatric cases. As of March 15, 2022, the definition of a COVID-19-associated death has been changed.

Cases

Figure 1. Cases of COVID-19 by Week of Public Health Report Date, Manitoba, August 23, 2020 – September 17, 2022

Weekly cases and deaths (.csv)

Note. Deaths due to COVID-19 were aligned by week of outcome date.

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Figure 2. Sex and Age Distribution of COVID-19 Cases, Manitoba, March 1, 2020 – September 17, 2022

Sex and age counts (.csv)

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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 – September 17, 2022

Weekly incidence rate by age (.csv)

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Figure 4. Cases of COVID-19 by Health Region and Public Health Report Date, Manitoba, October 1, 2021 – September 17, 2022

Weekly cases by region (.csv)

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Table 1. Cases of COVID-19 and Incidence Rate (/10,000 population) by Health Region, Manitoba, March 13, 2020 – September 17, 2022

Health Region	Total Cases	Cases this week	Incidence Rate	Age-standardized Incidence Rate *
Winnipeg RHA	80,883	174	2.2	2.2
Southern Health-Santé Sud	20,602	23	1.1	1.2
Interlake-Eastern RHA	12,808	45	3.4	3.2
Prairie Mountain Health	15,556	39	2.3	2.0
Northern Health Region	19,773	96	12.4	12.5

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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Monthly updates about severe outcomes after vaccination have been discontinued starting Week 31. Manitoba Health will continue to monitor COVID-19 vaccine effectiveness and report periodically when data allow. COVID-19 vaccines continue to provide important protection against serious illness following infection due to all variants of concern (VOC) of COVID-19.

Testing

Figure 5. Average Daily Testing Volume and Positivity (%) for COVID-19 by Week of Specimen Receiving Date, Manitoba, August 23, 2020 – September 17, 2022

Weekly Testing (.csv)

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Severity

Figure 6. Severe Outcomes of COVID-19 by Week of Outcome Date, Manitoba, August 23, 2020 – September 17, 2022

Weekly severe outcomes (.csv)

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

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Figure 7. Age Distribution of Severe COVID-19 Cases Compared to All Cases, Manitoba, March 13, 2020 – September 17, 2022

Age distribution of new severe outcomes (.csv)

Age distribution of severe outcomes (.csv)

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Figure 8. Percentage of COVID-19 Cases With Underlying Illnesses, Manitoba, March 13, 2020 – September 17, 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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Outbreaks

Figure 9. Weekly COVID-19 Outbreaks, Manitoba, 2019 – 2022

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