Respiratory Virus Report, Week 39 - ending October 1, 2022
In this Respiratory Virus Report, the number of detections of coronavirus reflects only seasonal human coronaviruses, not the novel pandemic coronavirus (SARS-CoV-2) that causes COVID-19. For information on COVID-19, see the Coronavirus disease (COVID-19): Outbreak update
Overall Summary
Respiratory virus detections remain low in Canada, but are increasing. Activity of all viruses is near or below expected levels.
- Enterovirus/Rhinovirus remains the most common seasonal respiratory virus detected in Canada (894 detections; 22.6% positive), but activity is similar to previous weeks and remains below expected levels for this time of year.
- Detections of other respiratory viruses are low, but activity is near expected levels.
- 33/34 sentinel laboratories reported surveillance data.
On this page
- List of abbreviations
- Respiratory virus detections
- Positive respiratory virus tests historical comparison
- Number of positive respiratory virus tests
- Positive influenza (Flu) tests
- Positive respiratory syncytial virus (RSV) tests
- Positive human parainfluenza virus (HPIV) tests
- Positive adenovirus (ADV) tests
- Positive human metapneumovirus (HMPV) tests
- Positive enterovirus/rhinovirus (EV/ RV) tests
- Positive human coronavirus (HCoV) tests
Abbreviations:
- Flu
- Influenza
- Flu A(H1)pdm09
- Influenza A(H1N1)pdm09
- Flu A(H3)
- Influenza A(H3N2)
- Flu A(UnS)
- Influenza A(Unsubtyped)
- RSV
- Respiratory syncytial virus
- HPIV
- Human parainfluenza virus
- HMPV
- Human metapneumovirus
- ADV
- Adenovirus
- EV/RV
- Enterovirus/Rhinovirus
- HCoV
- Human coronavirus
- Atl
- Atlantic Canada
- BC
- British Columbia
- Can
- Canada
- EORLA
- Eastern Ontario Regional Laboratory Association
- HSC
- Health Sciences Centre
- N.C.
- Data not collected
- N.R.
- Data not reported for current week
- ON
- Ontario
- PR
- Prairies
- P.H.O.L.
- Public Health Ontario Laboratory
- QC
- Quebec
- Terr
- Territories of Canada
- UHN
- University Health Network
Respiratory virus detections
Table 1: Respiratory virus detections for the week ending October 1, 2022 (surveillance week 2022-39)
| Reporting Laboratory | Flu Tested | A(H1)pdm09 Positive | A(H3) Positive | A(UnS) Positive | Total Flu A Positive | Total Flu B Positive | RSV Tested | RSV Positive | HPIV Tested | HPIV 1 Positive | HPIV 2 Positive | HPIV 3 Positive | HPIV 4 Positive | Other HPIV Positive | ADV Tested | ADV Positive | HMPV Tested | HMPV Positive | EV/RV Tested | EV/RV Positive | HCoV Tested | HCoV Positive |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Newfoundland | 176 | 0 | 0 | 0 | 0 | 0 | 176 | 10 | 176 | 0 | 0 | 3 | 1 | 0 | 176 | 3 | 176 | 5 | 176 | 35 | 176 | 0 |
| Prince Edward Island | 28 | 0 | 0 | 0 | 0 | 0 | 28 | 0 | 28 | 0 | 0 | 0 | 0 | 0 | 28 | 1 | 28 | 0 | 28 | 15 | 28 | 0 |
| Nova Scotia | 179 | 0 | 0 | 2 | 2 | 1 | 179 | 6 | 41 | 0 | 0 | 0 | 0 | 0 | 41 | 2 | 41 | 0 | 41 | 8 | 41 | 0 |
| New Brunswick | 305 | 0 | 0 | 0 | 0 | 0 | 173 | 1 | 41 | 0 | 1 | 0 | 0 | 0 | 41 | 2 | 41 | 0 | 41 | 21 | 41 | 1 |
| Atlantic | 688 | 0 | 0 | 2 | 2 | 1 | 556 | 17 | 286 | 0 | 1 | 3 | 1 | 0 | 286 | 8 | 286 | 5 | 286 | 79 | 286 | 1 |
| Région Nord-Est | 604 | 0 | 0 | 0 | 0 | 0 | 153 | 5 | 8 | 0 | 0 | 0 | 0 | 0 | 8 | 0 | 8 | 0 | N.C. | N.C. | 8 | 0 |
| Québec-Chaudière-Appalaches | 436 | 0 | 0 | 1 | 1 | 0 | 438 | 25 | 37 | 1 | 1 | 2 | 0 | 0 | 276 | 5 | 276 | 7 | N.C. | N.C. | 155 | 1 |
| Centre-du-Québec | 310 | 0 | 0 | 0 | 0 | 0 | 280 | 20 | 147 | 0 | 0 | 1 | 0 | 0 | 147 | 3 | 147 | 3 | N.C. | N.C. | 147 | 0 |
| Montréal-Laval | 900 | 0 | 0 | 2 | 2 | 2 | 916 | 64 | 412 | 5 | 2 | 2 | 1 | 0 | 412 | 10 | 412 | 15 | N.C. | N.C. | 439 | 3 |
| Ouest du Québec | 249 | 0 | 0 | 0 | 0 | 0 | 249 | 21 | 16 | 0 | 0 | 1 | 0 | 0 | 16 | 2 | 16 | 0 | N.C. | N.C. | 16 | 0 |
| Montérégie | 367 | 0 | 0 | 0 | 0 | 0 | 367 | 29 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | N.C. | N.C. | 0 | 0 |
| Province of Québec | 2866 | 0 | 0 | 3 | 3 | 2 | 2403 | 164 | 620 | 6 | 3 | 6 | 1 | 0 | 859 | 20 | 859 | 25 | N.C. | N.C. | 765 | 4 |
| P.H.O.L. - Ottawa | 47 | 0 | 0 | 0 | 0 | 0 | 47 | 0 | 47 | 0 | 0 | 0 | 0 | 0 | 47 | 0 | 47 | 0 | 47 | 4 | 47 | 0 |
| EORLA | 269 | 0 | 0 | 3 | 3 | 0 | 269 | 12 | 58 | 0 | 0 | 2 | 0 | 0 | 58 | 2 | 58 | 3 | 58 | 28 | 58 | 0 |
| P.H.O.L. - Kingston | 61 | 0 | 0 | 0 | 0 | 0 | 61 | 3 | 61 | 0 | 0 | 0 | 0 | 1 | 61 | 1 | 61 | 0 | 61 | 7 | 61 | 0 |
| UHN / Mount Sinai Hospital | 450 | 0 | 0 | 2 | 2 | 0 | 450 | 5 | 5 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 5 | 0 | 5 | 0 | 5 | 0 |
| P.H.O.L. - Toronto | 380 | 4 | 19 | 1 | 3 | 0 | 379 | 6 | 379 | 0 | 0 | 0 | 0 | 22 | 379 | 9 | 379 | 2 | 379 | 84 | 379 | 1 |
| Sick Kids Hospital - Toronto | N.R. | N.R. | N.R. | N.R. | N.R. | N.R. | N.R. | N.R. | N.R. | N.R. | N.R. | N.R. | N.R. | N.R. | N.R. | N.R. | N.R. | N.R. | N.R. | N.R. | N.R. | N.R. |
| Shared Hospital Laboratory | 2872 | 0 | 0 | 24 | 24 | 0 | 2872 | 20 | 312 | 1 | 0 | 3 | 0 | 1 | 314 | 2 | 314 | 0 | 314 | 25 | 299 | 0 |
| P.H.O.L. - Sault Ste. Marie | 10 | 0 | 0 | 0 | 0 | 0 | 10 | 0 | 10 | 0 | 0 | 0 | 0 | 0 | 10 | 0 | 10 | 0 | 10 | 1 | 10 | 0 |
| P.H.O.L. - Timmins | 5 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 5 | 0 | 5 | 0 | 5 | 1 |
| St. Joseph's - London | 62 | 0 | 0 | 0 | 0 | 0 | 62 | 1 | 62 | 0 | 0 | 0 | 0 | 2 | 62 | 1 | 62 | 0 | 62 | 23 | 8 | 0 |
| P.H.O.L. - London | 106 | 0 | 1 | 0 | 1 | 0 | 106 | 2 | 106 | 0 | 0 | 0 | 0 | 3 | 106 | 2 | 106 | 0 | 106 | 30 | 106 | 1 |
| P.H.O.L. - Orillia | 24 | 0 | 0 | 1 | 1 | 0 | 24 | 1 | 24 | 0 | 0 | 0 | 0 | 4 | 24 | 0 | 24 | 0 | 24 | 8 | 24 | 0 |
| P.H.O.L. - Thunder Bay | 12 | 0 | 0 | 0 | 0 | 0 | 12 | 0 | 12 | 0 | 0 | 0 | 0 | 0 | 12 | 0 | 12 | 0 | 12 | 4 | 12 | 1 |
| P.H.O.L. - Sudbury | 12 | 0 | 0 | 0 | 0 | 0 | 12 | 0 | 12 | 0 | 0 | 0 | 0 | 0 | 12 | 0 | 12 | 0 | 12 | 0 | 12 | 0 |
| P.H.O.L. - Hamilton | 66 | 0 | 1 | 0 | 1 | 0 | 66 | 3 | 66 | 0 | 0 | 0 | 0 | 7 | 66 | 1 | 66 | 0 | 66 | 20 | 66 | 0 |
| P.H.O.L. - Peterborough | 20 | 0 | 0 | 0 | 0 | 0 | 20 | 2 | 20 | 0 | 0 | 0 | 0 | 1 | 20 | 1 | 20 | 0 | 20 | 10 | 20 | 0 |
| St. Joseph's - Hamilton | 762 | 0 | 0 | 2 | 2 | 1 | 762 | 21 | 762 | 0 | 0 | 25 | 0 | 0 | 762 | 0 | 762 | 4 | 762 | 138 | 0 | 0 |
| Province of Ontario | 5158 | 4 | 21 | 33 | 37 | 1 | 5157 | 76 | 1941 | 1 | 0 | 30 | 0 | 41 | 1943 | 19 | 1943 | 9 | 1943 | 382 | 1112 | 4 |
| Province of Manitoba | 466 | 0 | 0 | 0 | 0 | 0 | 466 | 3 | 127 | 0 | 0 | 1 | 0 | 0 | 127 | 5 | 141 | 2 | 127 | 27 | 141 | 0 |
| Province of Saskatchewan | 428 | 0 | 0 | 0 | 0 | 0 | 428 | 0 | 190 | 0 | 1 | 4 | 0 | 0 | 190 | 9 | 190 | 6 | 190 | 55 | 190 | 1 |
| Province of Alberta | 2128 | 6 | 11 | 3 | 20 | 0 | 1895 | 18 | 948 | 3 | 3 | 10 | 1 | 0 | 948 | 12 | 948 | 6 | 932 | 191 | 948 | 8 |
| Prairies | 3022 | 6 | 11 | 3 | 20 | 0 | 2789 | 21 | 1265 | 3 | 4 | 15 | 1 | 0 | 1265 | 26 | 1279 | 14 | 1249 | 273 | 1279 | 9 |
| British Columbia | 1952 | 7 | 3 | 1 | 30 | 0 | 1853 | 13 | 460 | 1 | 6 | 5 | 1 | 2 | 460 | 14 | 460 | 9 | 443 | 145 | 443 | 1 |
| Yukon | 4 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. |
| Northwest Territories | 32 | 0 | 0 | 0 | 0 | 0 | 32 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 32 | 15 | 0 | 0 |
| Nunavut | 77 | 0 | 0 | 4 | 4 | 0 | 77 | 1 | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. |
| Territories | 113 | 0 | 0 | 4 | 4 | 0 | 113 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 32 | 15 | 0 | 0 |
| CANADA | 13799 | 17 | 35 | 46 | 96 | 4 | 12871 | 292 | 4572 | 11 | 14 | 59 | 4 | 43 | 4813 | 87 | 4827 | 62 | 3953 | 894 | 3885 | 19 |
The data in the RVDSS report represent surveillance data available at the time of writing. Data missing from the current week are denoted by N.R. Data not collected by reporting lab denoted by N.C.
Specimens from Yukon (YT) are sent to reference laboratories in British Columbia and reported results reflect specimens identified as originating from YT.
Results from British Columbia comprise of specimens from the following sites: Children's and Women's Hospital Laboratory, Fraser Health Medical Microbiology Laboratory, Island Health, Providence Health Care, Vancouver General Hospital, Vancouver Coastal Health sites, Victoria General Hospital, BCCDC Public Health Laboratory, Interior Health Authority sites and Northern Health Authority sites.
Delays in the reporting of data may cause data to change retrospectively.
Due to different testing protocols of laboratories across Canada, influenza A subtype detection counts may not be included in total influenza A detection counts. Some subtype detections are not available through routine testing but are subsequently reported if further subtype testing is conducted. In these instances, subtype counts do not reflect influenza A detections intended to be captured by routine surveillance, and are excluded from total detections and percent positivity.
Table 2: Cumulative respiratory virus detections from August 28, 2022 to October 1, 2022 (surveillance week 2021-39)
| Reporting Laboratory | Flu Tested | A(H1)pdm09 Positive | A(H3) Positive | A(UnS) Positive | Total Flu A Positive | Total Flu B Positive | RSV Tested | RSV Positive | HPIV Tested | HPIV 1 Positive | HPIV 2 Positive | HPIV 3 Positive | HPIV 4 Positive | Other HPIV Positive | ADV Tested | ADV Positive | HMPV Tested | HMPV Positive | EV/RV Tested | EV/RV Positive | HCoV Tested | HCoV Positive |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Newfoundland | 841 | 0 | 1 | 0 | 1 | 0 | 841 | 22 | 841 | 2 | 2 | 6 | 3 | 0 | 841 | 9 | 841 | 26 | 841 | 114 | 841 | 0 |
| Prince Edward Island | 193 | 0 | 0 | 0 | 0 | 0 | 193 | 3 | 193 | 0 | 2 | 9 | 0 | 0 | 193 | 11 | 193 | 1 | 193 | 119 | 193 | 1 |
| Nova Scotia | 1313 | 0 | 0 | 4 | 4 | 1 | 1312 | 13 | 207 | 0 | 0 | 1 | 1 | 0 | 207 | 8 | 207 | 0 | 207 | 54 | 207 | 0 |
| New Brunswick | 1821 | 0 | 0 | 0 | 0 | 1 | 1255 | 11 | 254 | 0 | 2 | 15 | 1 | 0 | 254 | 26 | 254 | 1 | 254 | 87 | 254 | 4 |
| Atlantic | 4168 | 0 | 1 | 4 | 5 | 2 | 3601 | 49 | 1495 | 2 | 6 | 31 | 5 | 0 | 1495 | 54 | 1495 | 28 | 1495 | 374 | 1495 | 5 |
| Région Nord-Est | 3001 | 0 | 0 | 2 | 2 | 0 | 694 | 15 | 25 | 1 | 1 | 0 | 0 | 0 | 24 | 2 | 24 | 0 | N.C. | N.C. | 21 | 1 |
| Québec-Chaudière-Appalaches | 1861 | 0 | 0 | 3 | 3 | 1 | 1784 | 69 | 161 | 2 | 2 | 6 | 1 | 0 | 1184 | 19 | 1174 | 25 | N.C. | N.C. | 646 | 5 |
| Centre-du-Québec | 1179 | 0 | 0 | 1 | 1 | 2 | 1068 | 43 | 307 | 3 | 0 | 1 | 0 | 0 | 307 | 5 | 307 | 9 | N.C. | N.C. | 307 | 0 |
| Montréal-Laval | 3892 | 0 | 0 | 9 | 9 | 3 | 3664 | 180 | 1826 | 20 | 5 | 18 | 1 | 0 | 1826 | 51 | 1826 | 85 | N.C. | N.C. | 1762 | 5 |
| Ouest du Québec | 1231 | 0 | 0 | 3 | 3 | 0 | 1155 | 59 | 83 | 1 | 0 | 2 | 0 | 0 | 92 | 10 | 83 | 1 | N.C. | N.C. | 83 | 2 |
| Montérégie | 1947 | 0 | 0 | 3 | 3 | 1 | 1730 | 79 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | N.C. | N.C. | 0 | 0 |
| Province of Québec | 13111 | 0 | 0 | 21 | 21 | 7 | 10095 | 445 | 2402 | 27 | 8 | 27 | 2 | 0 | 3433 | 87 | 3414 | 120 | N.C. | N.C. | 2819 | 13 |
| P.H.O.L. - Ottawa | 150 | 0 | 0 | 0 | 0 | 0 | 150 | 1 | 150 | 0 | 0 | 0 | 0 | 1 | 150 | 0 | 150 | 2 | 150 | 12 | 150 | 0 |
| EORLA | 1149 | 0 | 0 | 5 | 5 | 0 | 1149 | 30 | 198 | 3 | 0 | 3 | 1 | 0 | 198 | 5 | 198 | 4 | 198 | 74 | 198 | 1 |
| P.H.O.L. - Kingston | 190 | 0 | 0 | 0 | 0 | 0 | 190 | 6 | 190 | 0 | 0 | 0 | 0 | 4 | 190 | 4 | 190 | 0 | 190 | 45 | 190 | 0 |
| UHN / Mount Sinai Hospital | 1957 | 0 | 0 | 8 | 8 | 1 | 1957 | 7 | 52 | 0 | 0 | 0 | 0 | 0 | 52 | 0 | 52 | 0 | 52 | 1 | 52 | 2 |
| P.H.O.L. - Toronto | 1358 | 12 | 44 | 1 | 10 | 0 | 1357 | 11 | 1357 | 0 | 0 | 0 | 0 | 69 | 1358 | 21 | 1357 | 10 | 1357 | 218 | 1357 | 5 |
| Sick Kids Hospital - Toronto | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Shared Hospital Laboratory | 14631 | 0 | 0 | 46 | 46 | 0 | 14631 | 73 | 532 | 3 | 0 | 6 | 0 | 3 | 536 | 5 | 535 | 0 | 508 | 38 | 427 | 1 |
| P.H.O.L. - Sault Ste. Marie | 25 | 0 | 0 | 0 | 0 | 0 | 25 | 0 | 25 | 0 | 0 | 0 | 0 | 0 | 25 | 0 | 25 | 0 | 25 | 1 | 25 | 0 |
| P.H.O.L. - Timmins | 48 | 0 | 0 | 0 | 0 | 0 | 48 | 0 | 48 | 0 | 0 | 0 | 0 | 0 | 48 | 0 | 48 | 0 | 48 | 15 | 48 | 1 |
| St. Joseph's - London | 265 | 0 | 0 | 0 | 0 | 0 | 265 | 5 | 231 | 0 | 0 | 0 | 0 | 5 | 265 | 2 | 265 | 0 | 265 | 61 | 21 | 0 |
| P.H.O.L. - London | 393 | 0 | 4 | 0 | 4 | 0 | 393 | 10 | 393 | 0 | 0 | 0 | 0 | 13 | 393 | 9 | 393 | 2 | 393 | 89 | 393 | 2 |
| P.H.O.L. - Orillia | 106 | 0 | 1 | 1 | 2 | 0 | 106 | 3 | 106 | 0 | 0 | 0 | 0 | 6 | 106 | 2 | 106 | 4 | 106 | 48 | 106 | 0 |
| P.H.O.L. - Thunder Bay | 43 | 0 | 0 | 0 | 0 | 0 | 43 | 0 | 43 | 0 | 0 | 0 | 0 | 1 | 43 | 0 | 43 | 0 | 43 | 22 | 43 | 1 |
| P.H.O.L. - Sudbury | 37 | 0 | 0 | 0 | 0 | 0 | 37 | 0 | 37 | 0 | 0 | 0 | 0 | 1 | 37 | 0 | 37 | 0 | 37 | 7 | 37 | 0 |
| P.H.O.L. - Hamilton | 293 | 0 | 1 | 0 | 1 | 0 | 293 | 8 | 293 | 0 | 0 | 0 | 0 | 17 | 293 | 4 | 293 | 0 | 293 | 60 | 293 | 0 |
| P.H.O.L. - Peterborough | 81 | 0 | 0 | 0 | 0 | 0 | 81 | 6 | 81 | 0 | 0 | 0 | 0 | 5 | 81 | 2 | 81 | 1 | 81 | 32 | 81 | 0 |
| St. Joseph's - Hamilton | 3300 | 0 | 0 | 6 | 6 | 2 | 3300 | 65 | 3300 | 0 | 0 | 89 | 0 | 0 | 3300 | 0 | 3300 | 21 | 3300 | 509 | 0 | 0 |
| Province of Ontario | 24026 | 12 | 50 | 67 | 82 | 3 | 24025 | 225 | 7036 | 6 | 0 | 98 | 1 | 125 | 7075 | 54 | 7073 | 44 | 7046 | 1232 | 3421 | 13 |
| Manitoba | 2643 | 0 | 0 | 2 | 2 | 0 | 2643 | 14 | 623 | 0 | 2 | 8 | 0 | 0 | 623 | 22 | 716 | 23 | 623 | 177 | 716 | 1 |
| Province of Saskatchewan | 2221 | 0 | 0 | 3 | 3 | 0 | 2220 | 5 | 932 | 0 | 3 | 25 | 5 | 0 | 934 | 36 | 936 | 36 | 934 | 141 | 932 | 4 |
| Province of Alberta | 9135 | 13 | 22 | 10 | 45 | 4 | 8136 | 57 | 4087 | 11 | 8 | 53 | 4 | 0 | 4086 | 52 | 4085 | 20 | 4007 | 802 | 4087 | 23 |
| Prairies | 13999 | 13 | 22 | 15 | 50 | 4 | 12999 | 76 | 5642 | 11 | 13 | 86 | 9 | 0 | 5643 | 110 | 5737 | 79 | 5564 | 1120 | 5735 | 28 |
| British Columbia | 10486 | 15 | 20 | 1 | 70 | 3 | 9840 | 51 | 2362 | 3 | 14 | 39 | 14 | 5 | 2362 | 55 | 2362 | 41 | 2315 | 580 | 2315 | 5 |
| Yukon | 33 | 0 | 0 | 0 | 0 | 0 | 33 | 0 | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. |
| Northwest Territories | 156 | 0 | 0 | 0 | 0 | 0 | 156 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 156 | 72 | 0 | 0 |
| Nunavut | 381 | 3 | 0 | 4 | 7 | 0 | 381 | 14 | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. | N.C. |
| Territories | 570 | 3 | 0 | 4 | 7 | 0 | 570 | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 156 | 72 | 0 | 0 |
| CANADA | 66360 | 43 | 93 | 112 | 235 | 19 | 61130 | 866 | 18937 | 49 | 41 | 281 | 31 | 130 | 20008 | 360 | 20081 | 312 | 16576 | 3378 | 15785 | 64 |
The data in the RVDSS report represent surveillance data available at the time of writing. Data not collected by reporting lab denoted by N.C.
Specimens from Yukon (YT) are sent to reference laboratories in British Columbia and reported results reflect specimens identified as originating from YT.
Results from British Columbia comprise of specimens from the following sites: Children's and Women's Hospital Laboratory, Fraser Health Medical Microbiology Laboratory, Island Health, Providence Health Care, Vancouver General Hospital, Vancouver Coastal Health sites, Victoria General Hospital, BCCDC Public Health Laboratory, Interior Health Authority sites and Northern Health Authority sites.
Delays in the reporting of data may cause data to change retrospectively. Due to these delays, the sum of weekly report totals do not add up to cumulative totals.
Due to different testing protocols of laboratories across Canada, influenza A subtype detection counts may not be included in total influenza A detection counts. Some subtype detections are not available through routine testing but are subsequently reported if further subtype testing is conducted. In these instances, subtype counts do not reflect influenza A detections intended to be captured by routine surveillance, and are excluded from total detections and percent positivity.
Positive respiratory virus tests historical comparison
Shaded area represents the maximum and minimum % of respiratory virus tests positive reported by week from seasons 2014-2015 to 2019-2020
Note: Data from week 11 of the 2019-2020 season onwards are excluded from the historical comparison due to the COVID-19 pandemic
Note: % Tests Positive scale changes across the dashed line
a Human coronavirus excludes human coronaviruses SARS-CoV, MERS-CoV and SARS-CoV-2; Includes seasonal human coronaviruses HCoV-229E, HCoV-OC43, HCoV-NL63, HCoV-HKU1.
Figure 1: Positive respiratory virus tests (%) reported by participating laboratories in Canada by surveillance week compared to average and range from 2014-2015 to 2019-2020 season
| Week | Week end | 2022-2023 A% | 2021-2022 A% | 2020-2021 A% | Max A% Base | Min A% Base | Av A% Base | 2022-2023 B% | 2021-2022 B% | 2020-2021 B% | Max B% Base | Min B% Base | Av B% Base | 2022-2023 RSV% | 2021-2022 RSV% | 2020-2021 RSV% | Max RSV% Base | Min RSV% Base | Av RSV% Base | 2022-2023 HPIV% | 2021-2022 HPIV% | 2020-2021 HPIV% | Max HPIV% Base | Min HPIV% Base | Av HPIV% Base | 2022-2023 ADV% | 2021-2022 ADV% | 2020-2021 ADV% | Max ADV% Base | Min ADV% Base | Av ADV% Base | 2022-2023 HMPV% | 2021-2022 HMPV% | 2020-2021 HMPV% | Max HMPV% Base | Min HMPV% Base | Av HMPV% Base | 2022-2023 EV/RV% | 2021-2022 EV/RV% | 2020-2021 EV/RV% | Max EV/RV% Base | Min EV/RV% Base | Av EV/RV% Base | 2022-2023 HCoV% | 2021-2022 HCoV% | 2020-2021 HCoV% | Max HCoV% Base | Min HCoV% Base | Av HCoV% Base |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 35 | 2022-09-03 | 0.18 | 0.04 | 0.00 | 1.60 | 0.11 | 0.68 | 0.02 | 0.00 | 0.02 | 0.28 | 0.00 | 0.13 | 1.12 | 4.43 | 0.02 | 1.34 | 0.38 | 0.60 | 2.80 | 5.99 | 0.08 | 3.16 | 1.15 | 2.42 | 2.41 | 1.18 | 0.27 | 1.74 | 0.99 | 1.43 | 1.98 | 0.23 | 0.17 | 2.04 | 0.10 | 0.77 | 15.54 | 21.96 | 9.07 | 27.19 | 22.44 | 24.78 | 0.57 | 1.05 | 0.06 | 0.76 | 0.18 | 0.45 |
| 36 | 2022-09-10 | 0.14 | 0.01 | 0.00 | 2.11 | 0.23 | 0.98 | 0.05 | 0.00 | 0.00 | 0.55 | 0.00 | 0.15 | 1.22 | 6.61 | 0.04 | 1.09 | 0.22 | 0.57 | 3.08 | 4.93 | 0.20 | 3.31 | 1.35 | 2.32 | 1.91 | 1.15 | 0.40 | 2.85 | 1.42 | 1.87 | 1.89 | 0.24 | 0.06 | 0.84 | 0.10 | 0.48 | 16.16 | 18.59 | 8.13 | 30.69 | 23.30 | 26.31 | 0.40 | 0.62 | 0.00 | 0.38 | 0.12 | 0.22 |
| 37 | 2022-09-17 | 0.23 | 0.03 | 0.00 | 1.59 | 0.36 | 0.87 | 0.02 | 0.00 | 0.00 | 0.19 | 0.04 | 0.12 | 1.01 | 7.59 | 0.02 | 1.37 | 0.31 | 0.64 | 2.94 | 5.97 | 0.13 | 3.26 | 1.65 | 2.40 | 1.86 | 0.81 | 0.35 | 2.44 | 1.38 | 1.86 | 1.46 | 0.17 | 0.05 | 1.61 | 0.00 | 0.51 | 21.87 | 27.46 | 8.07 | 33.58 | 27.74 | 31.68 | 0.26 | 0.44 | 0.05 | 0.56 | 0.00 | 0.26 |
| 38 | 2022-09-24 | 0.48 | 0.00 | 0.02 | 2.15 | 0.43 | 1.16 | 0.02 | 0.00 | 0.00 | 0.21 | 0.00 | 0.14 | 1.39 | 7.16 | 0.10 | 1.24 | 0.37 | 0.64 | 2.44 | 4.73 | 0.07 | 2.87 | 1.92 | 2.33 | 1.20 | 0.82 | 0.58 | 2.04 | 1.11 | 1.63 | 1.35 | 0.37 | 0.02 | 1.43 | 0.06 | 0.47 | 23.44 | 33.19 | 15.67 | 39.57 | 32.80 | 35.33 | 0.33 | 0.67 | 0.00 | 1.36 | 0.06 | 0.43 |
| 39 | 2022-10-01 | 0.70 | 0.01 | 0.00 | 2.65 | 0.57 | 1.53 | 0.03 | 0.00 | 0.00 | 0.29 | 0.09 | 0.18 | 2.27 | 8.48 | 0.05 | 1.29 | 0.41 | 0.68 | 2.87 | 8.12 | 0.02 | 3.01 | 1.70 | 2.24 | 1.81 | 1.14 | 0.19 | 2.27 | 1.04 | 1.66 | 1.28 | 0.17 | 0.04 | 0.72 | 0.05 | 0.28 | 22.62 | 30.01 | 24.12 | 40.59 | 34.87 | 37.68 | 0.49 | 0.62 | 0.05 | 0.66 | 0.07 | 0.45 |
Number of positive respiratory virus tests
Figure 2: Number of positive respiratory virus tests reported by participating laboratories in Canada by surveillance week
| Week | ParaInfluenza | Adenovirus | Human metapneumovirus | Enterovirus/Rhinovirus | Coronavirus | Respiratory syncytial virus | Influenza |
|---|---|---|---|---|---|---|---|
| 35 | 88 | 81 | 67 | 436 | 15 | 130 | 26 |
| 36 | 99 | 66 | 65 | 448 | 11 | 141 | 24 |
| 37 | 109 | 72 | 57 | 715 | 8 | 123 | 34 |
| 38 | 105 | 54 | 61 | 885 | 11 | 180 | 70 |
| 39 | 131 | 87 | 62 | 894 | 19 | 292 | 100 |
Positive influenza (Flu) tests
Figure 3: Positive influenza (Flu) tests (%) in Canada by region by surveillance week
| Week | Week end | Can Tests | Can A% | Can B% | Atl Tests | Atl A% | Atl B% | QC Tests | QC A% | QC B% | ON Tests | ON A% | ON B% | Pr Tests | Pr A% | Pr B% | BC Tests | BC A% | BC B% | Terr Tests | Terr A% | Terr B% |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 35 | 2022-09-03 | 12704 | 0.18 | 0.02 | 932 | 0.11 | 0.11 | 2457 | 0.20 | 0.04 | 4621 | 0.11 | 0.00 | 2573 | 0.31 | 0.04 | 2006 | 0.20 | 0.00 | 115 | 0.00 | 0.00 |
| 36 | 2022-09-10 | 12537 | 0.14 | 0.05 | 906 | 0.00 | 0.00 | 2558 | 0.12 | 0.04 | 4367 | 0.16 | 0.02 | 2565 | 0.16 | 0.08 | 2055 | 0.19 | 0.10 | 86 | 0.00 | 0.00 |
| 37 | 2022-09-17 | 13426 | 0.23 | 0.02 | 854 | 0.12 | 0.00 | 2676 | 0.15 | 0.07 | 4729 | 0.32 | 0.02 | 2798 | 0.18 | 0.00 | 2247 | 0.22 | 0.00 | 122 | 0.82 | 0.00 |
| 38 | 2022-09-24 | 13894 | 0.48 | 0.02 | 788 | 0.13 | 0.00 | 2554 | 0.23 | 0.04 | 5151 | 0.35 | 0.00 | 3041 | 0.43 | 0.03 | 2226 | 1.21 | 0.04 | 134 | 1.49 | 0.00 |
| 39 | 2022-10-01 | 13799 | 0.70 | 0.03 | 688 | 0.29 | 0.15 | 2866 | 0.10 | 0.07 | 5158 | 0.72 | 0.02 | 3022 | 0.66 | 0.00 | 1952 | 1.54 | 0.00 | 113 | 3.54 | 0.00 |
Positive respiratory syncytial virus (RSV) tests
Figure 4: Positive respiratory syncytial virus (RSV) tests (%) in Canada by region by surveillance week
| Week | Week end | Can Tests | RSV% | Atl Tests | RSV% | QC Tests | RSV% | ON Tests | RSV% | Pr Tests | RSV% | BC Tests | RSV% | Terr Tests | RSV% |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 35 | 2022-09-03 | 11600 | 1.12 | 832 | 1.44 | 1870 | 3.26 | 4621 | 0.50 | 2367 | 0.68 | 1795 | 0.50 | 115 | 7.83 |
| 36 | 2022-09-10 | 11598 | 1.22 | 785 | 0.64 | 2031 | 2.95 | 4367 | 1.01 | 2414 | 0.54 | 1915 | 0.73 | 86 | 5.81 |
| 37 | 2022-09-17 | 12152 | 1.01 | 721 | 0.97 | 1843 | 3.26 | 4729 | 0.61 | 2610 | 0.61 | 2127 | 0.38 | 122 | 2.46 |
| 38 | 2022-09-24 | 12909 | 1.39 | 707 | 1.13 | 1948 | 5.13 | 5151 | 1.03 | 2819 | 0.35 | 2150 | 0.33 | 134 | 1.49 |
| 39 | 2022-10-01 | 12871 | 2.27 | 556 | 3.06 | 2403 | 6.82 | 5157 | 1.47 | 2789 | 0.75 | 1853 | 0.70 | 113 | 0.88 |
Positive human parainfluenza virus (HPIV) tests
Figure 5: Positive human parainfluenza virus (HPIV) tests (%) in Canada by region by surveillance week
| Week | Week End | Can Tests | HPIV% | Atl Tests | HPIV% | QC Tests | HPIV% | ON Tests | HPIV% | Pr Tests | HPIV% | BC Tests | HPIV% |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 35 | 2022-09-03 | 3142 | 2.80 | 294 | 0.34 | 368 | 2.45 | 1111 | 3.33 | 967 | 2.69 | 402 | 3.73 |
| 36 | 2022-09-10 | 3210 | 3.08 | 280 | 5.36 | 446 | 2.91 | 1037 | 3.09 | 1025 | 2.44 | 422 | 3.32 |
| 37 | 2022-09-17 | 3702 | 2.94 | 301 | 5.65 | 458 | 2.40 | 1300 | 3.54 | 1112 | 2.07 | 530 | 2.26 |
| 38 | 2022-09-24 | 4311 | 2.44 | 334 | 1.80 | 510 | 2.94 | 1647 | 2.61 | 1273 | 1.73 | 547 | 3.47 |
| 39 | 2022-10-01 | 4572 | 2.87 | 286 | 1.75 | 620 | 2.58 | 1941 | 3.71 | 1265 | 1.82 | 460 | 3.26 |
Positive adenovirus (ADV) tests
Figure 6: Positive adenovirus (ADV) tests (%) in Canada by region by surveillance week
| Week | Week End | Can Tests | ADV% | Atl Tests | ADV% | QC Tests | ADV% | ON Tests | ADV% | Pr Tests | ADV% | BC Tests | ADV% |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 35 | 2022-09-03 | 3360 | 2.41 | 294 | 6.12 | 560 | 3.57 | 1139 | 0.61 | 965 | 2.69 | 402 | 2.49 |
| 36 | 2022-09-10 | 3461 | 1.91 | 280 | 3.57 | 686 | 2.19 | 1045 | 0.67 | 1028 | 2.43 | 422 | 2.13 |
| 37 | 2022-09-17 | 3862 | 1.86 | 301 | 4.65 | 618 | 2.59 | 1301 | 1.00 | 1111 | 1.35 | 530 | 2.64 |
| 38 | 2022-09-24 | 4512 | 1.20 | 334 | 1.20 | 710 | 2.25 | 1647 | 0.49 | 1274 | 1.41 | 547 | 1.46 |
| 39 | 2022-10-01 | 4813 | 1.81 | 286 | 2.80 | 859 | 2.33 | 1943 | 0.98 | 1265 | 2.06 | 460 | 3.04 |
Positive human metapneumovirus (HMPV) tests
Figure 7: Positive human metapneumovirus (HMPV) tests (%) in Canada by region by surveillance week
| Week | Week End | Can Tests | HMPV% | Atl Tests | HMPV% | QC Tests | HMPV% | ON Tests | HMPV% | Pr Tests | HMPV% | BC Tests | HMPV% |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 35 | 2022-09-03 | 3382 | 1.98 | 294 | 2.38 | 549 | 4.01 | 1139 | 0.97 | 998 | 1.90 | 402 | 1.99 |
| 36 | 2022-09-10 | 3442 | 1.89 | 280 | 1.79 | 646 | 3.72 | 1045 | 0.96 | 1049 | 1.72 | 422 | 1.90 |
| 37 | 2022-09-17 | 3909 | 1.46 | 301 | 2.66 | 650 | 3.85 | 1300 | 0.46 | 1127 | 0.80 | 530 | 1.70 |
| 38 | 2022-09-24 | 4521 | 1.35 | 334 | 0.90 | 710 | 3.38 | 1646 | 0.49 | 1284 | 1.48 | 547 | 1.28 |
| 39 | 2022-10-01 | 4827 | 1.28 | 286 | 1.75 | 859 | 2.91 | 1943 | 0.46 | 1279 | 1.09 | 460 | 1.96 |
Positive enterovirus/rhinovirus (EV/RV) tests
Figure 8: Positive enterovirus/rhinovirus (EV/RV) tests (%) in Canada by region by surveillance week
| Week | Week End | Can Tests | EV/RV% | Atl Tests | EV/RV% | QC Tests | EV/RV% | ON Tests | EV/RV% | Pr Tests | EV/RV% | BC Tests | EV/RV% |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 35 | 2022-09-03 | 2805 | 15.54 | 294 | 30.27 | - | - | 1139 | 10.18 | 947 | 16.79 | 394 | 15.48 |
| 36 | 2022-09-10 | 2773 | 16.16 | 280 | 21.79 | - | - | 1045 | 10.81 | 1013 | 18.76 | 417 | 17.99 |
| 37 | 2022-09-17 | 3269 | 21.87 | 301 | 23.59 | - | - | 1300 | 20.38 | 1101 | 20.62 | 522 | 24.33 |
| 38 | 2022-09-24 | 3776 | 23.44 | 334 | 22.16 | - | - | 1619 | 21.99 | 1254 | 21.61 | 538 | 31.78 |
| 39 | 2022-10-01 | 3953 | 22.62 | 286 | 27.62 | - | - | 1943 | 19.66 | 1249 | 21.86 | 443 | 32.73 |
Positive human coronavirus (HCoV) tests
Figure 9: Positive human coronavirus (HCoV) tests (%) in Canada by region by surveillance week
| Week | Week End | Can Tests | HCoV% | Atl Tests | HCoV% | QC Tests | HCoV% | ON Tests | HCoV% | Pr Tests | HCoV% | BC Tests | HCoV% |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 35 | 2022-09-03 | 2633 | 0.57 | 294 | 0.68 | 465 | 0.86 | 483 | 0.62 | 997 | 0.20 | 394 | 1.02 |
| 36 | 2022-09-10 | 2765 | 0.40 | 280 | 0.71 | 571 | 0.18 | 451 | 0.22 | 1046 | 0.67 | 417 | 0.00 |
| 37 | 2022-09-17 | 3121 | 0.26 | 301 | 0.00 | 579 | 0.17 | 590 | 0.51 | 1128 | 0.35 | 522 | 0.00 |
| 38 | 2022-09-24 | 3381 | 0.33 | 334 | 0.00 | 439 | 0.68 | 785 | 0.25 | 1285 | 0.47 | 538 | 0.00 |
| 39 | 2022-10-01 | 3885 | 0.49 | 286 | 0.35 | 765 | 0.52 | 1112 | 0.36 | 1279 | 0.70 | 443 | 0.23 |
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