Provincial Respiratory Surveillance Report

COVID-19 and Seasonal Influenza

2024-2025 season

*seasons are defined as June 30, 2024 to June 28, 2025

This weekly report provides a current epidemiological update on the intensity and severity of respiratory activity in Manitoba including laboratory confirmed activity of both COVID-19 and seasonal influenza. Surveillance data include syndromic indicators, laboratory testing, associated hospitalization and mortality, and outbreaks. Updates around immunization coverage in COVID-19 and seasonal influenza are also included.

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 3:00pm every Friday.

Week 36 (September 1 – September 7, 2024)

About epidemiological week

Data extracted up to 1:00 am on September 12, 2024
Next reporting date: September 20, 2024

COVID-19 vaccination / Seasonal Influenza vaccination

COVID-19 Test positivity remains lower than the peak rate observed in the fall (week 45). In the past few weeks there has been signs of an increase; hospital/ICU admissions and fatalities increased this week compared to the previous week, all other indicators remained stable over time. Wastewater surveillance data up to September 10 indicates high viral activity for COVID-19.		Cases About cases Cases this week: 136 Total cases: 862 (June 30, 2024 – September 7, 2024) More Analyses Epi curve Age and sex
Testing About testing This week Average daily specimens: 135 Weekly positivity rate: 22.8% Total (June 30, 2024 – September 7, 2024) Tested people: 6,668 Population tested: 0.5% Specimens tested: 8,286 Positivity rate: 17.8% More Analyses Provincial testing	Severity About associated severity Severe outcomes this week Hospital admissions: 59 ICU admissions3: 10 Deaths7: 10 Total severe outcomes (June 30, 2024 – September 7, 2024) Hospital admissions: 373 ICU admissions: 39 Deaths: Unavailable	Outbreaks About outbreaks COVID-19 outbreaks this week In long-term care facilities: 3 In hospitals: 0 In other settings: 5 Total COVID-19 outbreaks (June 30, 2024 – September 7, 2024) In long-term care facilities: 51 In hospitals: 20 In other settings: 5 More Analyses Check trend
Seasonal Influenza Test positivity remains lower than the peak rate observed in the fall (week 51); all other indicators remained stable over time. No RSV detection in week 36. RSV detection decreased slightly compared with the previous week.		Cases Cases this week Influenza A: 3 Influenza B: 0 Total cases (June 30, 2024 – September 7, 2024) Influenza A: 9 Influenza B: 0 More Analyses Check trend
Testing Influenza testing this week Average daily specimens: 59 Influenza A positivity rate: 0.2% Influenza B positivity rate: 0.0% Other respiratory pathogens this week RSV4 positivity rate: 0.0% RSV detections: 0 More Analyses Influenza testing Respiratory detection	Severity Severe outcomes this week Hospital admissions: Unavailable ICU admissions: Unavailable Deaths7: 0 Total severe outcomes (June 30, 2024 – September 7, 2024) Hospital admissions: Unavailable ICU admissions: Unavailable Deaths: 0	Outbreaks About outbreaks Influenza outbreaks this week Influenza A: 0 Influenza B: 0 Total influenza outbreaks (June 30, 2024 – September 7, 2024) Influenza A: 0 Influenza B: 0 Other outbreaks This week: 0 Total (June 30, 2024 – September 7, 2024): 22 More Analyses Check trend
Syndromic Indicators Weekly respiratory visits to emergency department are currently lower than the peak seen in week 51. In the past fews week there are signs of an increase. All other syndromic indicators have remained similar to the previous week.		FluWatchers About FluWatchers Participants reporting this week: 304 Reporting fever and cough: 1.6% More Analyses Check trend
Physician Visits About sentinel physicians Influenza Like Illness (ILI) Visits to sentinel physicians this week: 3.3% More Analyses Check Trend	Antiviral About Antiviral Units of antiviral dispensed from pharmacies this week: 0 More Analyses Check Trend	ED Visits About emergency room visits Respiratory visits to emergency department (ED) this week: 1224 More Analyses Check Trend
Important Notes Data about COVID-19 and 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. Cumulative totals include all events from start of the current season to end of the reporting week. ICU admissions are included in hospital admissions, and include adult and pediatric cases. RSV - Respiratory syncytial virus. Influenza associated hospitalizations and associated ICU cases are currently under review. COVID case counts are under review and maybe an undercount. Deaths are reported as “associated with” COVID or Influenza, but not all have been “caused by” COVID or Influenza. “COVID associated deaths” and “Influenza associated deaths” include persons who had a confirmed positive lab test result for COVID or Influenza, within 30 days before their death, or following their death through a post mortem. The number of deaths from week to week may be impacted by the lag-time for entry of deaths from Vital Statistics/Client Registry/clinical notifications and delayed entry of cases.

COVID-19

Cases

Figure 1. Weekly Cases of COVID-19 by Season, Manitoba, 2021 – 2025 (June through June)

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Figure 2. Sex and Age Distribution of COVID-19 Cases, Manitoba, June 30, 2024 – September 7, 2024

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Figure 3. Cases of COVID-19 by Health Region and Public Health Report Date, Manitoba, June 30, 2024 – September 7, 2024

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Testing

Figure 4. Average Daily Testing Volume and Positivity (%) for COVID-19 by Week of Specimen Receiving Date, Manitoba, June 30, 2024 – September 7, 2024

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Vaccination

Table 1. Fall COVID-19 Campaign Coverage (at least 1 dose) and Coverage in the Last Six Months by Age Group

	Sep 1, 2022 - Feb 28, 2023		Sep 1, 2023 - Sep 07, 2024		( Last 6 months, up to Sep 07, 2024 )
Age group	Number Vaccinated	%Coverage	Number Vaccinated	%Coverage	Number Vaccinated	%Coverage
00-04	4951	5.9%	4159	4.9%	445	0.5%
05-17	23501	10.1%	15530	6.7%	468	0.2%
18-49	77870	12.8%	53838	8.9%	1429	0.2%
50-64	74119	28.5%	61420	23.6%	2038	0.8%
65+	151317	62.2%	140160	57.6%	16057	6.6%
All	357089	25.0%	291025	20.4%	20573	1.4%

About vaccination coverage

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Seasonal Influenza

Cases

Figure 5. Weekly Cases of Influenza by Season, Manitoba, 2020 – 2025 (June through June)

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Testing

Figure 6. Average Daily Testing Volume and Positivity (%) for Influenza by Week of Specimen Receiving Date, Manitoba, June 30, 2024 – September 7, 2024

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Figure 7. Number of Positive Respiratory Virus Tests by Week of Specimen Receiving Date, Manitoba, June 30, 2024 – September 7, 2024

Note. Other respiratory viruses include adenovirus, enterovirus/rhinovirus, human coronavirus (seasonal), human metapneumovirus and human parainfluenza virus.

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Outbreaks

Figure 8. Weekly Respiratory Outbreaks, Manitoba, 2021 – September 7, 2024

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Vaccinations

Table 2. Coverage of Influenza Vaccinations, Manitoba

	Sep 1, 2022 - May 31, 2023		Sep 1, 2023 - Sep 07, 2024
Age group	Number Vaccinated	%Coverage	Number Vaccinated	%Coverage
0-4	17512	20.9%	14667	17.5%
5-17	37352	15.7%	32033	13.4%
18-49	95919	15.4%	90194	14.5%
50-64	83203	32.3%	78529	30.4%
65+	146413	58.9%	148776	59.9%
All	386652	26.7%	368948	25.4%

Note. Actual number of people vaccinated between September 1 and September 7, 2024 may be higher due to delays in reporting doses administered.

About vaccination coverage

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FluWatchers

Figure 9. Weekly FluWatchers Participants and Percentage Reporting Fever and Cough, Manitoba, 2020 – September 7, 2024

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Physician Visits

Figure 10. Weekly Percentage of ILI Related Visits to Sentinel Physicians, Manitoba, 2018 – September 7, 2024

Note. Due to small numbers the rates should be interpreted with caution.

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Antiviral

Figure 11. Weekly Units of Antiviral Dispensed from Pharmacies, Manitoba, 2020 – September 7, 2024

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ED Visits

Figure 12. Weekly Respiratory Visits to Emergency Department, Manitoba, 2017 – September 7, 2024

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