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 10:00am every Friday.
Data extracted up to 1:00 am on March 2, 2023
Next reporting date:
March 10, 2023
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Important Notes
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Figure 1. Weekly Cases of COVID-19 by Season, Manitoba, 2020 – 2023 (July through June)
Figure 2. Sex and Age Distribution of COVID-19 Cases, Manitoba, July 3, 2022 – February 25, 2023
Figure 3. Incidence Rate (/10,000 Population) of COVID-19 Cases by Age Group and Week of Public Health Report Date, Manitoba, July 3, 2022 – February 25, 2023
Figure 4. Cases of COVID-19 by Health Region and Public Health Report Date, Manitoba, July 3, 2022 – February 25, 2023
Table 1. Cases of COVID-19 and Incidence Rate (/10,000 population) by Health Region, Manitoba, July 3, 2022 – February 25, 2023
Helath region | Total cases | Cases this week | Incidence rate this week | Age-standardized incidence rate* this week |
---|---|---|---|---|
Winnipeg RHA | 4770 | 66 | 0.8 | 0.8 |
Southern Health-Santé Sud | 825 | 26 | 1.2 | 1.4 |
Interlake-Eastern RHA | 815 | 9 | 0.7 | 0.6 |
Prairie Mountain Health | 1074 | 18 | 1.0 | 0.9 |
Northern Health Region | 513 | 5 | 0.6 | 1.1 |
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.
Figure 5. Average Daily Testing Volume and Positivity (%) for COVID-19 by Week of Specimen Receiving Date, Manitoba, July 3, 2022 – February 25, 2023
Figure 6. Severe Outcomes of COVID-19 by Week of Outcome Date, Manitoba, July 3, 2022 – February 25, 2023
Note. ICU admissions are not included in the hospital admissions.
Figure 7. Age Distribution of Severe COVID-19 Cases This Week Compared to All Cases, Manitoba, July 3, 2022 – February 25, 2023
Figure 8. Weekly COVID-19 Outbreaks, Manitoba, 2020 – 2023
Note: All respiratory outbreaks include COVID-19 outbreaks, influenza outbreaks and the other respiratory outbreaks with known or unknown pathogens.
Table 2. Coverage of COVID-19 Vaccinations, Manitoba, February 25, 2023
Age group (years) | At least 1 dose | At least 2 doses | At least 1 dose within the last 6 months | At least 1 dose of Bivalent |
---|---|---|---|---|
.5-04 | 10.4% | 5.6% | 8.4% | 0.1% |
05-11 | 54.5% | 41.9% | 7.2% | 1.4% |
12-17 | 82.2% | 77.2% | 8.1% | 7.2% |
18-29 | 87.8% | 84.8% | 7.1% | 7.9% |
30-39 | 84.2% | 81.7% | 10.9% | 12.9% |
40-49 | 87.8% | 85.9% | 14.9% | 17.6% |
50-59 | 86.8% | 85.4% | 21.9% | 23.8% |
60-69 | >=95.0% | 93.8% | 39.4% | 42.8% |
70-79 | 100% | >=95.0% | 52.6% | 58.0% |
80+ | >=95.0% | >=95.0% | 51.4% | 58.8% |
ALL | 81.2% | 77.9% | 19.4% | 20.4% |
For more information, please visit COVID-19 vaccination coverage in Canada - Canada.ca
Figure 9. Weekly Cases of Influenza by Season, Manitoba, 2019 – 2023 (July through June)
Figure 10. Incidence Rate (/10,000 Population) of Influenza Cases by Age Group and Week of Public Health Report Date, July 3, 2022 – February 25, 2023
Table 3. Cases of Influenza and Incidence Rate (/10,000 population) by Health Region, Manitoba, July 3, 2022 – February 25, 2023
Helath region | Total cases | Cases this week | Incidence rate this week | Age-standardized incidence rate* this week |
---|---|---|---|---|
Winnipeg RHA | 1194 | 1 | 0 | 0 |
Southern Health-Santé Sud | 357 | 0 | 0 | 0 |
Interlake-Eastern RHA | 332 | 0 | 0 | 0 |
Prairie Mountain Health | 477 | 0 | 0 | 0 |
Northern Health Region | 234 | 0 | 0 | 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.
BackTable 4. Antiviral Susceptibility of Isolates by Influenza Type and Subtype, Canada, September 1, 2022 – February 25, 2023
Area | Strain | Resistant | Susceptible | Resistant | Susceptible |
---|---|---|---|---|---|
Canada | A(H3N2) | 0 | 266 | 0 | 266 |
A(H1N1) | 0 | 26 | 0 | 26 | |
Manitoba | A(H3N2) | 0 | 193 | 0 | 193 |
A(H1N1) | 0 | 19 | 0 | 19 |
Table 5. Strain Characterization of Influenza Isolates, Canada, September 1, 2022 – February 25, 2023
Strain | Canada | Manitoba |
---|---|---|
Influenza A (H3N2)/Darwin/6/2021-like | 302 | 215 |
Influenza A (H1N1)/Wisconsin/588/2019-like | 30 | 20 |
Notes: A/Darwin/6/2021-like virus is the H3N2 virus selected for the 2022/23 Northern Hemisphere Influenza vaccine. A/Wisconsin/588/2019-like virus is the recommmended H1N1 component for the 2022-2023 Northern Hemisphere influenza vaccine.
BackFigure 11. Average Daily Testing Volume and Positivity (%) for Influenza by Week of Specimen Receiving Date, Manitoba, July 3, 2022 – February 25, 2023
Figure 12. Number of Positive Respiratory Virus Tests by Week of Specimen Receiving Date, Manitoba, July 3, 2022 – February 25, 2023
Note. Other respiratory viruses include adenovirus, enterovirus/rhinovirus, human coronavirus (seasonal), human metapneumovirus and human parainfluenza virus.
BackFigure 13. Severe Outcomes of Influenza by Week of Outcome Date, Manitoba, July 3, 2022 – February 25, 2023
Note. ICU admissions are not included in the hospital admissions.
BackFigure 14. Age Distribution of Severe Influenza Cases in All Cases, Manitoba, July 3, 2022 – February 25, 2023
Figure 15. Weekly Respiratory and Influenza Outbreaks, Manitoba, 2018 – February 25, 2023
Note: All respiratory outbreaks include COVID-19 outbreaks, influenza outbreaks and the other respiratory outbreaks with known or unknown pathogens.
Table 7. Coverage of Influenza Vaccinations, Manitoba, September 1, 2022 – February 25, 2023
Age group | Does | Coverage percentage |
---|---|---|
0-4 | 16712 | 19.8% |
5-17 | 36681 | 15.8% |
18-49 | 94468 | 15.5% |
50-64 | 82151 | 31.6% |
65+ | 145094 | 59.7% |
All | 380446 | 26.6% |
Figure 16. Weekly FluWatchers Participants and Percentage Reporting Fever and Cough, Manitoba, 2019 – February 25, 2023
Figure 17. Weekly Percentage of ILI Related Visits to Sentinel Physicians, Manitoba, 2018 – February 25, 2023
Figure 18. Weekly Units of Antiviral Dispensed from Pharmacies, Manitoba, 2018 – February 25, 2023
Figure 19. Weekly Respiratory Visits to Emergency Department, Manitoba, 2017 – February 25, 2023