Interactive aggregate data on respiratory related cases in Alberta
Circulation of respiratory viruses is normally highest in the fall and winter. For the purposes of reporting and comparisons over time and between viruses, the respiratory season typically runs from late August of the current year to late August of the following year. The current season, 2023-2024, starts on August 27, 2023 and ends on August 24, 2024. Additional information on respiratory season, and a full calendar for the current season, can be found on the Data Notes page.
Respiratory virus data included in the interactive data application is up-to-date as of April 27, 2024. Among its new features, the dashboard now includes RSV cases and positivity, with plans to collect Severe Outcomes data in the near future.
Summary of laboratory-confirmed respiratory viruses, 2023-2024
Respiratory virus
Number of tests in the current week (n)
Cumulative number of tests in the season (n)
Percent positivity in the current week (%)
Rolling percent positivity (%; previous 3 weeks)
Adenovirus
1,306
46,974
0.8
0.8
Coronavirus
1,305
46,956
5.3
4.6
SARS-CoV-2
4,248
184,708
5.4
5.0
Human Metapneumovirus (hMPV)
1,307
46,786
3.3
3.5
Influenza (All)
4,644
178,253
6.6
6.9
Influenza A
4,640
177,949
0.8
1.0
Influenza B
4,626
170,726
5.8
5.9
Parainfluenza
1,305
46,966
7.5
7.0
Respiratory Syncytial Virus
4,388
159,994
1.0
1.3
Rhinovirus/Enterovirus
1,301
46,878
10.9
9.4
Respiratory virus test positivity by week, 2023-2024
Respiratory virus test positivity by week and zone, 2023-2024
Zone
SARS-CoV-2
Influenza (All)
Influenza A
Influenza B
Respiratory Syncytial Virus
Alberta
Calgary Zone
Central Zone
Edmonton Zone
North Zone
South Zone
Zone
Rhinovirus/Enterovirus
Adenovirus
Coronavirus
Parainfluenza
Human Metapneumovirus (hMPV)
Alberta
Calgary Zone
Central Zone
Edmonton Zone
North Zone
South Zone
Respiratory virus test positivity by week for the 2023-2024 season compared to historical trends
Grey shaded area represents historical minimum and maximums for percent positivity. The dotted grey line represents the historical average positivity during that respiratory week. Historical calculations are based on the previous five seasons. For COVID-19, everything prior to the 2019-2020 season is excluded. For influenza, everything prior to the 2019-2020 season is excluded.
SARS-CoV-2 testing and positivity by week, 2019-2020 to 2023-2024
Influenza testing and positivity by week, 2019-2020 to 2023-2024
Respiratory syncytial virus testing and positivity by week, 2019-2020 to 2023-2024
Adenovirus testing and positivity by week, 2019-2020 to 2023-2024
Coronavirus testing and positivity by week, 2019-2020 to 2023-2024
Rhinovirus/enterovirus testing and positivity by week, 2019-2020 to 2023-2024
Human metapneumovirus (hMPV) testing and positivity by week, 2019-2020 to 2023-2024
Parainfluenza testing and positivity by week, 2019-2020 to 2023-2024