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Respiratory Virus Report, Week 5 - ending February 4, 2023

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Organization: Public Health Agency of Canada

Please note that the Respiratory Virus Detection Surveillance System (RVDSS) is a sentinel laboratory surveillance system that does not capture all respiratory virus testing performed in Canada; differences may exist between the data presented in this report and provincial/territorial epidemiological reports. SARS-CoV-2 laboratory data is included in this report to facilitate the comparison of positivity with other respiratory viruses. Interpretation should be made with caution as testing practices differ among viruses.

For additional SARS-CoV-2 surveillance information, please refer to the COVID-19 epidemiology update.

Overall Summary

In week 5 (week ending February 4, 2023) in Canada, participating RVDSS laboratories reported 6,525 detections of SARS-CoV-2 from 56,805 tests (11.5% positive). Among non-SARS-CoV-2 respiratory viruses, where test volumes are lower (range of 7,811 to 27,778 tests), activity of nearly all viruses is within or below expected levels.

  • Activity of influenza remains low and stable at inter-seasonal levels. Influenza A accounts for the majority of influenza detections in Canada (206 detections; 0.7% positive) compared to influenza B (79 detections; 0.3% positive).
  • Activity of respiratory syncytial virus (RSV) is decreasing. Compared to pre-pandemic seasons, RSV activity remains within expected levels typical of this time of year (1,667 detections; 7.1% positive).
  • Activity of all other non-SARS-CoV-2 respiratory viruses is near expected levels typical of this time of year.
  • 34/35 sentinel laboratories reported surveillance data.

On this page

Abbreviations:
ADV
Adenovirus
Atl
Atlantic Canada
BC
British Columbia
Can
Canada
EORLA
Eastern Ontario Regional Laboratory Association
EV/RV
Enterovirus/Rhinovirus
Flu
Influenza
Flu A(H1)pdm09
Influenza A(H1N1)pdm09
Flu A(H3)
Influenza A(H3N2)
Flu A(UnS)
Influenza A(Unsubtyped)
HCoV
Human coronavirus 229E/OC43/NL63/HKU1
HMPV
Human metapneumovirus
HPIV
Human parainfluenza virus
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
RSV
Respiratory syncytial virus
RVDSS
Respiratory Virus Detection Surveillance System
SARS-CoV-2
Severe acute respiratory syndrome coronavirus 2
Terr
Territories of Canada
UHN
University Health Network

Respiratory virus detections

Table 1: Respiratory virus detections for the week ending February 4, 2023 (surveillance week 2023-05)
Reporting Laboratory SARS-CoV-2 Tested SARS-CoV-2 Positive 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 573 74 284 0 0 2 2 0 284 13 284 3 0 11 1 0 284 6 284 6 284 29 284 15
Prince Edward Island 692 61 106 0 0 1 1 0 106 17 22 0 0 1 0 0 22 0 22 5 22 7 22 1
Nova Scotia 2538 637 1301 0 0 4 4 0 1301 90 31 0 0 1 0 0 31 1 31 3 31 7 31 4
New Brunswick 2155 357 1530 0 0 1 1 0 1215 110 259 0 1 1 0 0 259 22 259 10 259 23 259 8
Atlantic 5958 1129 3221 0 0 8 8 0 2906 230 596 3 1 14 1 0 596 29 596 24 596 66 596 28
Région Nord-Est 1878 135 1851 0 0 24 24 0 545 59 40 0 0 3 0 0 40 6 40 3 N.C. N.C. 40 2
Québec-Chaudière-Appalaches 3487 323 653 0 0 3 3 0 627 55 176 0 0 3 0 0 188 25 176 5 N.C. N.C. 176 5
Centre-du-Québec 3433 442 444 0 0 3 3 1 383 21 27 0 0 0 0 0 27 3 27 1 N.C. N.C. 27 2
Montréal-Laval 4266 487 3275 0 0 35 35 39 1413 49 512 0 0 13 0 0 512 33 516 6 N.C. N.C. 512 36
Ouest du Québec 2551 286 773 0 0 9 9 2 724 50 23 0 0 2 0 0 23 3 23 1 N.C. N.C. 23 2
Montérégie 2969 285 610 0 0 6 6 1 606 11 6 0 0 0 0 0 6 1 6 0 N.C. N.C. 6 0
Province of Québec 18584 1958 7606 0 0 80 80 43 4298 245 784 0 0 21 0 0 796 71 788 16 N.C. N.C. 784 47
P.H.O.L. - Ottawa 562 104 191 1 1 0 2 0 191 20 107 0 0 0 0 1 107 0 107 4 107 7 107 10
EORLA 1951 162 442 0 0 5 5 1 442 16 33 0 0 2 0 0 33 1 33 1 33 7 33 2
P.H.O.L. - Kingston 737 118 89 0 0 0 0 0 89 11 70 0 0 0 0 0 70 0 70 0 70 3 70 2
UHN / Mount Sinai Hospital 2430 164 751 0 0 3 3 1 751 10 118 0 0 0 0 0 118 0 118 1 118 4 118 8
P.H.O.L. - Toronto 1025 228 832 7 6 0 5 1 832 57 738 0 0 0 0 35 738 15 738 20 738 76 738 33
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. N.R. N.R.
Shared Hospital Laboratory 2083 151 2082 4 6 2 12 5 2082 44 2069 0 0 0 0 18 2069 17 2099 29 2099 117 2099 15
P.H.O.L. - Sault Ste. Marie 44 20 30 0 0 0 0 0 30 2 25 0 0 0 0 4 25 0 25 0 25 2 25 1
P.H.O.L. - Timmins 198 8 22 0 0 0 0 0 22 4 22 0 0 0 0 1 22 0 22 0 22 2 22 4
St. Joseph's - London 2937 330 819 0 0 2 2 2 819 18 73 0 0 0 0 3 73 3 73 0 73 9 73 1
P.H.O.L. - London 842 164 372 1 1 0 2 1 372 30 265 0 0 0 0 8 265 3 265 9 265 28 265 8
P.H.O.L. - Orillia 22 5 73 0 0 0 0 0 73 6 73 0 0 0 0 0 73 1 73 2 73 19 73 3
P.H.O.L. - Thunder Bay 131 25 34 0 0 0 0 0 34 8 32 0 0 0 0 2 32 0 32 1 32 0 32 2
P.H.O.L. - Sudbury 34 3 18 0 0 0 0 0 18 1 16 0 0 0 0 0 16 0 16 1 16 1 16 0
P.H.O.L. - Hamilton 587 159 302 0 0 0 0 5 302 15 195 0 0 0 0 4 195 4 195 8 195 26 195 2
P.H.O.L. - Peterborough 116 20 57 0 0 0 0 0 57 7 26 0 0 0 0 1 26 0 26 4 26 1 26 1
St. Joseph's - Hamilton 2714 365 1405 0 0 12 12 3 1405 32 1405 0 0 21 0 0 1405 16 1405 31 1405 104 0 0
Sault Area Hospital 257 69 136 0 0 1 1 0 136 8 70 1 0 2 0 0 70 1 70 2 70 1 70 4
Province of Ontario 16670 2095 7655 13 14 25 44 19 7655 289 5337 1 0 25 0 77 5337 61 5367 113 5367 407 3962 96
Manitoba 1435 142 1214 0 3 7 10 0 1214 75 114 2 0 4 0 0 114 4 134 7 114 8 134 9
Saskatchewan 4047 248 1081 0 0 3 3 0 915 126 371 2 1 14 0 0 370 13 370 15 370 38 370 6
Alberta 5447 568 3466 20 6 22 48 14 3068 322 1285 9 0 28 2 0 1285 17 1284 59 1250 102 1285 21
Prairies 10929 958 5761 20 9 32 61 14 5197 523 1770 13 1 46 2 0 1769 34 1788 81 1734 148 1789 36
British Columbia 4406 370 3434 1 0 0 13 3 3285 369 708 2 2 30 4 0 708 27 708 32 680 117 680 43
Yukon 106 3 21 0 0 0 0 0 21 5 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 34 0 27 0 0 0 0 0 27 4 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 27 4 N.C. N.C.
Nunavut 118 12 53 0 0 0 0 0 53 2 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 258 15 101 0 0 0 0 0 101 11 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 27 4 N.C. N.C.
CANADA 56805 6525 27778 34 23 145 206 79 23442 1667 9195 19 4 136 7 77 9206 222 9247 266 8404 742 7811 250

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.

Some 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 Coastal Health sites, Victoria General Hospital, BCCDC Public Health Laboratory, Interior Health Authority sites and Northern Health Authority sites.

Due to different testing protocols of laboratories across Canada, influenza A subtype detection counts may not be included in total influenza A detection counts. Total influenza A and B positive counts are used to calculate percentage of tests positive.

Delays in the reporting of data may cause data to change retrospectively.

Table 2: Cumulative respiratory virus detections from August 28, 2022 to February 4, 2023 (surveillance weeks 2022-35 to 2023-05)
Reporting Laboratory SARS-CoV-2 Tested SARS-CoV-2 Positive 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 13751 2728 7564 1 246 667 914 0 7564 282 7564 10 29 72 19 0 7564 157 7564 267 7564 602 7564 281
Prince Edward Island 25878 6209 2444 1 119 240 360 0 2444 223 1009 15 25 75 6 0 1009 59 1009 17 1009 317 1009 31
Nova Scotia 100970 20522 27322 0 4 3608 3612 1 27312 2037 904 4 16 22 3 0 907 36 897 6 907 176 907 28
New Brunswick 87421 12396 33105 4 132 4400 4536 6 26094 1648 2461 4 21 122 7 0 2461 179 2461 53 2461 446 2406 148
Atlantic 228020 41855 70435 6 501 8915 9422 7 63414 4190 11938 33 91 291 35 0 11941 431 11931 343 11941 1541 11886 488
Région Nord-Est 64401 8496 33233 0 2 3583 3585 8 11210 1130 869 7 3 52 0 0 869 50 861 58 N.C. N.C. 869 43
Québec-Chaudière-Appalaches 139615 13751 17554 0 0 2777 2777 12 17197 1741 4835 21 5 43 0 0 5120 342 4835 240 N.C. N.C. 4835 194
Centre-du-Québec 111039 15807 11878 0 0 1745 1745 16 10199 854 621 13 0 26 2 0 621 53 621 58 N.C. N.C. 621 29
Montréal-Laval 153049 20147 62561 0 9 5940 5949 131 33745 2309 14799 123 13 270 10 0 14808 618 14910 625 N.C. N.C. 14484 457
Ouest du Québec 85240 11672 15072 0 7 2149 2156 11 13060 1134 755 20 0 56 1 0 754 139 755 42 N.C. N.C. 756 34
Montérégie 109097 12879 15553 0 0 1630 1630 13 14938 982 89 0 0 2 0 0 89 2 89 4 N.C. N.C. 89 2
Province of Québec 662441 82752 155851 0 18 17824 17842 191 100349 8150 21968 184 21 449 13 0 22261 1204 22071 1027 N.C. N.C. 21654 759
P.H.O.L. - Ottawa 22672 5748 3399 14 134 65 208 0 3399 278 2417 0 0 0 0 58 2417 8 2417 35 2417 157 2417 84
EORLA 65543 7004 11209 0 0 1379 1379 4 11209 1200 881 8 3 37 16 0 881 43 881 26 881 199 881 61
P.H.O.L. - Kingston 23116 3914 1903 2 88 38 128 1 1902 164 1579 0 0 0 0 66 1580 21 1580 24 1579 165 1580 55
UHN / Mount Sinai Hospital 70914 5704 14676 4 43 345 392 16 14676 239 1052 0 0 4 0 0 1019 4 1052 1 1052 33 1052 50
P.H.O.L. - Toronto 43547 9288 18224 82 2394 141 1092 2 18195 1082 15799 0 0 0 0 661 15802 248 15799 219 15799 1227 15799 660
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 0 0
Shared Hospital Laboratory 59837 4535 59839 68 1454 718 2240 27 59838 2023 37048 4 0 16 0 441 37061 332 37283 249 37231 1115 37123 589
P.H.O.L. - Sault Ste. Marie 1411 275 466 1 52 15 58 0 466 13 406 0 0 0 0 41 406 1 406 26 406 16 406 13
P.H.O.L. - Timmins 7193 762 756 0 161 6 156 0 755 70 734 0 0 0 0 42 734 12 734 11 734 50 734 32
St. Joseph's - London 94627 12366 11938 0 0 870 870 18 11938 920 1337 0 0 0 0 50 1371 44 1371 7 1371 199 959 61
P.H.O.L. - London 28056 6113 7319 9 581 61 633 5 7318 753 6023 0 0 0 0 313 6024 72 6024 60 6023 426 6024 229
P.H.O.L. - Orillia 465 235 1788 6 260 23 289 0 1788 218 1729 0 0 0 0 108 1729 34 1729 38 1729 225 1729 88
P.H.O.L. - Thunder Bay 6987 1481 755 0 107 3 110 0 754 78 664 0 0 0 0 32 664 15 664 9 664 44 664 16
P.H.O.L. - Sudbury 1697 251 563 1 65 14 67 0 563 57 462 0 0 0 0 20 462 5 462 17 462 29 462 20
P.H.O.L. - Hamilton 20899 5533 6195 7 299 91 397 11 6192 488 4442 0 0 0 0 190 4444 55 4442 52 4442 373 4442 163
P.H.O.L. - Peterborough 3511 626 907 0 64 9 73 0 907 97 750 0 0 0 0 27 750 7 750 27 750 101 750 27
St. Joseph's - Hamilton 69133 10631 29254 0 0 2683 2683 15 29254 2152 29254 0 0 802 0 0 29254 261 29254 204 29254 1979 0 0
Sault Area Hospital 10212 1751 6526 1 260 256 517 0 6526 78 1911 35 0 45 2 0 1911 36 1911 88 1911 191 1911 44
Province of Ontario 529820 76217 175717 195 5962 6717 11292 99 175680 9910 106488 47 3 904 18 2049 106509 1198 106759 1093 106705 6529 76933 2192
Manitoba 50134 9076 25276 16 199 1752 1967 2 25276 1393 3808 4 4 136 6 0 3798 113 3924 161 3808 571 3924 152
Saskatchewan 132171 10735 29333 2 41 3831 3874 8 22414 1613 9672 31 40 440 8 0 9675 233 9677 514 9675 845 9672 346
Alberta 172645 28032 85952 877 7271 2709 10857 61 73731 6775 30023 165 62 626 34 0 30012 352 29978 717 29517 2617 30023 877
Prairies 354950 47843 140561 895 7511 8292 16698 71 121421 9781 43503 200 106 1202 48 0 43485 698 43579 1392 43000 4033 43619 1375
British Columbia 180915 17741 87575 337 4322 297 8706 50 81587 6444 18676 144 161 679 127 6 18664 427 18664 428 18120 2769 18117 737
Yukon 4142 279 555 2 136 0 138 0 552 21 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 1276 150 1168 2 147 1 150 0 1168 67 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 1168 238 N.C. N.C.
Nunavut 3291 318 1682 3 230 3 236 0 1682 42 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 8709 747 3405 7 513 4 524 0 3402 130 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 1168 238 N.C. N.C.
CANADA 1964855 267155 633544 1440 18827 42049 64484 418 545853 38605 202573 608 382 3525 241 2055 202860 3958 203004 4283 180934 15110 172209 5551

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.

Some 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 Coastal Health sites, Victoria General Hospital, BCCDC Public Health Laboratory, Interior Health Authority sites and Northern Health Authority sites.

Due to different testing protocols of laboratories across Canada, influenza A subtype detection counts may not be included in total influenza A detection counts. Total influenza A and B positive counts are used to calculate percentage of tests positive.

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.

Positive respiratory virus tests historical comparison

Figure 1: Positive severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), influenza, and respiratory syncytial virus tests (%) reported by participating laboratories in Canada by surveillance week compared to average and range from 2014-2015 to 2019-2020 season

Figure 1

Shaded area represents the maximum and minimum % of respiratory virus tests positive reported by week from seasons 2014-2015 to 2019-2020

Note: Changes to testing practices during the COVID-19 pandemic may cause substantial changes to indicator estimates from previous years. Collection of laboratory testing practice meta-data to understand these changes is ongoing. Interpret trends with caution.

Note: SARS-CoV-2 surveillance was integrated into RVDSS at the beginning of the 2022-2023 season; no appropriate data is available for historical comparison.

Note: Data from week 11 of the 2019-2020 season onwards are excluded from the historical comparison due to the COVID-19 pandemic.

Figure 1: Positive severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), influenza, and respiratory syncytial 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 SARS-CoV-2% 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
35 2022-09-03 13.40 0.18 0.04 0.00 1.60 0.11 0.68 0.02 0.00 0.02 0.28 0.00 0.13 1.14 4.43 0.02 1.34 0.38 0.60
36 2022-09-10 13.07 0.14 0.01 0.00 2.11 0.23 0.98 0.04 0.00 0.00 0.55 0.00 0.15 1.12 6.61 0.04 1.09 0.22 0.57
37 2022-09-17 12.73 0.24 0.03 0.00 1.59 0.36 0.87 0.01 0.00 0.00 0.19 0.04 0.12 1.05 7.59 0.02 1.37 0.31 0.64
38 2022-09-24 13.61 0.48 0.00 0.02 2.15 0.43 1.16 0.02 0.00 0.00 0.21 0.00 0.14 1.40 7.16 0.10 1.24 0.37 0.64
39 2022-10-01 14.45 0.68 0.01 0.00 2.65 0.57 1.53 0.03 0.00 0.00 0.29 0.09 0.18 2.11 8.48 0.05 1.29 0.41 0.68
40 2022-10-08 15.06 0.99 0.00 0.00 2.17 1.01 1.58 0.03 0.02 0.00 0.20 0.05 0.11 2.44 8.53 0.07 1.39 0.34 0.67
41 2022-10-15 16.58 1.44 0.03 0.01 2.66 1.05 1.57 0.01 0.03 0.00 0.36 0.03 0.16 3.52 9.54 0.10 1.74 0.58 0.98
42 2022-10-22 15.39 2.39 0.03 0.00 2.96 0.77 1.92 0.05 0.02 0.00 0.45 0.05 0.25 4.56 8.18 0.07 2.11 0.63 1.14
43 2022-10-29 15.78 5.54 0.03 0.01 5.23 0.68 2.60 0.03 0.02 0.00 0.55 0.06 0.23 6.59 8.11 0.07 2.16 0.55 1.32
44 2022-11-05 13.91 10.91 0.10 0.04 8.42 1.08 3.39 0.03 0.10 0.03 0.71 0.12 0.31 7.63 7.82 0.05 3.35 0.83 1.92
45 2022-11-12 12.43 16.20 0.07 0.02 9.83 1.18 4.19 0.04 0.06 0.02 0.97 0.22 0.44 7.54 7.03 0.04 4.43 1.29 2.59
46 2022-11-19 11.97 20.15 0.10 0.03 13.95 1.42 5.47 0.05 0.06 0.01 1.49 0.09 0.58 7.51 7.18 0.06 6.33 1.38 3.29
47 2022-11-26 11.76 24.06 0.13 0.03 15.24 1.25 6.91 0.04 0.07 0.04 2.13 0.13 0.80 6.65 8.10 0.03 8.69 1.79 4.46
48 2022-12-03 12.12 23.83 0.19 0.04 18.07 0.76 9.40 0.03 0.15 0.01 3.18 0.08 1.20 6.93 8.92 0.02 9.47 3.11 5.72
49 2022-12-10 12.63 20.95 0.23 0.03 19.52 1.43 11.41 0.06 0.05 0.01 4.21 0.19 1.60 7.36 10.09 0.06 12.26 4.87 7.12
50 2022-12-17 13.10 17.20 0.23 0.01 26.42 1.97 14.27 0.07 0.02 0.01 7.95 0.15 2.55 8.71 10.78 0.07 13.19 5.39 7.93
51 2022-12-24 14.15 12.50 0.18 0.00 28.53 2.27 16.81 0.05 0.02 0.01 10.44 0.19 3.30 9.26 8.97 0.07 15.23 6.52 9.27
52 2022-12-31 15.61 7.97 0.09 0.00 33.97 3.30 20.41 0.07 0.01 0.00 12.73 0.23 4.07 10.69 6.72 0.01 17.80 6.83 10.39
1 2023-01-07 15.09 4.59 0.08 0.00 30.93 4.58 19.55 0.07 0.00 0.00 10.34 0.22 3.86 10.40 5.26 0.04 15.62 7.12 10.17
2 2023-01-14 13.41 2.24 0.11 0.00 26.80 5.46 19.10 0.05 0.01 0.00 11.01 0.29 3.91 9.12 4.32 0.07 14.05 6.60 9.63
3 2023-01-21 12.26 1.39 0.04 0.01 28.20 9.13 18.94 0.14 0.01 0.01 12.75 0.35 4.69 8.47 3.42 0.03 15.56 6.72 10.32
4 2023-01-28 11.34 0.91 0.05 0.00 27.01 12.34 18.81 0.15 0.00 0.00 12.74 0.41 5.15 7.97 2.33 0.05 15.88 7.02 11.23
5 2023-02-04 11.49 0.74 0.03 0.00 23.66 15.78 19.14 0.28 0.01 0.00 14.84 0.41 5.76 7.11 2.19 0.04 16.33 7.17 11.49
Figure 2: Positive tests (%) of other respiratory viruses reported by participating laboratories in Canada by surveillance week compared to average and range from 2014-2015 to 2019-2020 season

Figure 2

Shaded area represents the maximum and minimum % of respiratory virus tests positive reported by week from seasons 2014-2015 to 2019-2020

Note: Changes to testing practices during the COVID-19 pandemic may cause substantial changes to indicator estimates from previous years. Collection of laboratory testing practice meta-data to understand these changes is ongoing. Interpret trends with caution.

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

Figure 2: Positive tests (%) of other respiratory viruses 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 EV/RV% 2021-2022 EV/RV% 2020-2021 EV/RV% Max EV/RV% Base Min EV/RV% Base Av EV/RV% 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 HCoV% 2021-2022 HCoV% 2020-2021 HCoV% Max HCoV% Base Min HCoV% Base Av HCoV% Base
35 2022-09-03 15.47 21.96 9.07 27.19 22.44 24.78 2.80 5.99 0.08 3.16 1.15 2.42 2.28 1.18 0.27 1.74 0.99 1.43 1.80 0.23 0.17 2.04 0.10 0.77 0.53 1.05 0.06 0.76 0.18 0.45
36 2022-09-10 16.22 18.59 8.13 30.69 23.30 26.31 3.21 4.93 0.20 3.31 1.35 2.32 2.19 1.15 0.40 2.85 1.42 1.87 1.81 0.24 0.06 0.84 0.10 0.48 0.38 0.62 0.00 0.38 0.12 0.22
37 2022-09-17 21.73 27.46 8.07 33.58 27.74 31.68 3.02 5.97 0.13 3.26 1.65 2.40 2.10 0.81 0.35 2.44 1.38 1.86 1.38 0.17 0.05 1.61 0.00 0.51 0.28 0.44 0.05 0.56 0.00 0.26
38 2022-09-24 23.50 33.19 15.67 39.57 32.80 35.33 2.40 4.73 0.07 2.87 1.92 2.33 1.59 0.82 0.58 2.04 1.11 1.63 1.61 0.37 0.02 1.43 0.06 0.47 0.32 0.67 0.00 1.36 0.06 0.43
39 2022-10-01 22.89 30.01 24.12 40.59 34.87 37.68 3.10 8.12 0.02 3.01 1.70 2.24 2.21 1.14 0.19 2.27 1.04 1.66 1.43 0.17 0.04 0.72 0.05 0.28 0.59 0.62 0.05 0.66 0.07 0.45
40 2022-10-08 19.32 26.26 16.62 41.29 33.00 35.43 3.70 8.19 0.02 3.28 1.90 2.43 1.80 1.31 0.44 2.25 1.39 1.82 1.43 0.16 0.00 0.92 0.05 0.34 0.93 0.57 0.09 1.08 0.22 0.58
41 2022-10-15 16.70 22.91 15.48 33.62 26.94 29.81 3.52 10.46 0.06 3.70 1.94 2.74 2.03 1.37 0.37 1.91 1.28 1.70 1.66 0.20 0.19 0.95 0.04 0.46 1.00 1.69 0.02 0.70 0.00 0.33
42 2022-10-22 12.95 22.16 13.60 32.62 24.54 27.82 4.21 10.01 0.06 3.89 2.64 3.20 1.67 2.54 0.47 2.38 1.47 1.86 1.59 0.15 0.06 0.89 0.15 0.38 1.16 1.07 0.00 1.18 0.20 0.49
43 2022-10-29 11.05 19.64 13.14 28.73 21.67 24.95 4.41 9.38 0.07 3.98 3.18 3.56 1.79 1.15 0.37 2.42 1.63 1.96 1.78 0.36 0.02 1.64 0.12 0.57 1.86 1.05 0.00 2.35 0.27 0.75
44 2022-11-05 10.23 21.45 9.23 23.82 16.75 21.34 4.14 10.28 0.03 4.81 2.94 3.70 2.02 1.42 0.22 2.88 1.18 2.20 1.79 0.77 0.13 1.08 0.23 0.47 2.54 2.21 0.00 2.59 0.21 0.88
45 2022-11-12 7.77 22.39 9.70 23.08 15.17 20.56 3.90 9.97 0.01 5.42 2.53 4.01 1.99 1.63 0.33 2.68 2.02 2.42 2.06 0.64 0.01 1.30 0.04 0.77 3.00 2.57 0.03 2.74 0.52 0.96
46 2022-11-19 6.93 21.37 9.02 22.77 15.28 19.27 3.97 8.29 0.04 5.72 1.62 4.19 1.87 2.51 0.30 2.90 1.99 2.53 1.89 0.99 0.04 1.43 0.18 0.79 3.54 2.99 0.03 3.32 0.46 1.25
47 2022-11-26 4.88 18.54 8.44 20.84 12.15 16.09 3.63 7.04 0.06 7.00 2.36 4.72 1.89 1.94 0.32 2.95 1.83 2.35 1.78 1.01 0.02 2.02 0.09 0.89 3.24 3.90 0.04 3.26 0.37 1.25
48 2022-12-03 4.74 16.64 7.94 16.72 12.69 13.83 3.04 5.78 0.02 6.14 3.03 4.18 1.87 1.89 0.35 3.34 1.66 2.48 1.86 1.48 0.02 1.94 0.31 1.08 3.94 4.94 0.02 4.30 1.00 2.04
49 2022-12-10 4.09 14.57 6.21 16.32 10.72 13.07 3.03 3.97 0.00 5.65 2.94 4.19 1.68 2.48 0.54 3.03 1.84 2.49 1.93 1.22 0.05 2.80 0.49 1.46 4.48 6.58 0.05 5.19 0.84 2.52
50 2022-12-17 4.58 12.40 6.62 13.85 8.43 10.90 2.98 3.23 0.06 5.95 2.54 4.27 2.29 2.72 0.51 3.27 1.49 2.45 1.92 1.08 0.02 3.32 0.46 1.70 5.13 7.26 0.11 6.04 1.54 3.16
51 2022-12-24 4.49 9.95 5.65 14.18 8.81 10.48 3.09 3.01 0.04 6.71 2.94 3.95 1.76 2.54 0.58 3.20 1.36 2.04 2.23 1.20 0.04 4.39 0.37 2.44 5.28 8.11 0.05 6.68 1.87 3.72
52 2022-12-31 4.50 7.71 6.53 14.41 6.24 9.23 3.32 2.13 0.03 5.08 2.87 3.75 1.80 1.92 0.48 2.59 1.20 1.76 2.75 1.00 0.11 3.81 0.41 2.44 4.73 10.33 0.07 6.73 2.78 4.75
1 2023-01-07 4.19 5.71 5.43 11.09 4.36 7.42 3.63 1.84 0.12 5.08 2.68 3.34 1.88 1.84 0.81 2.67 0.85 1.54 2.94 0.72 0.06 4.45 0.28 2.70 4.40 9.27 0.12 7.77 3.07 5.16
2 2023-01-14 4.71 3.98 5.18 9.55 4.31 6.79 3.24 1.19 0.08 4.12 2.46 3.05 1.87 1.13 0.82 2.15 0.87 1.37 2.61 0.38 0.03 4.76 0.42 2.66 4.01 7.46 0.16 7.89 2.84 5.44
3 2023-01-21 6.68 3.12 3.56 8.42 4.44 6.01 2.92 0.76 0.05 3.25 2.59 2.82 1.97 1.34 0.40 2.10 1.15 1.45 2.56 0.24 0.11 5.56 0.47 3.13 3.46 4.97 0.26 7.90 4.17 6.11
4 2023-01-28 8.22 2.60 3.87 9.04 4.89 6.41 2.78 0.64 0.06 3.12 1.77 2.55 2.35 1.18 0.46 1.83 1.11 1.49 2.71 0.23 0.12 5.19 0.55 3.01 2.63 3.92 0.16 7.86 3.79 6.08
5 2023-02-04 8.83 3.02 4.76 9.79 6.06 6.94 2.64 0.48 0.06 3.48 1.70 2.39 2.41 1.57 0.29 1.93 1.36 1.62 2.88 0.25 0.16 5.70 0.58 3.29 3.20 2.83 0.13 8.49 4.55 6.84

Positive severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) tests

Figure 3: Positive severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) tests (%) in Canada by region by surveillance week
Figure 3

Note: Differences in positivity between jurisdictions can reflect differences in testing practices. Please interpret with caution.

Figure 3: Positive severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) tests (%) in Canada by region by surveillance week
Week Week end Can Tests SARS-CoV-2% Atl Tests SARS-CoV-2% QC Tests SARS-CoV-2% ON Tests SARS-CoV-2% Pr Tests SARS-CoV-2% BC Tests SARS-CoV-2% Terr Tests SARS-CoV-2%
35 2022-09-03 95312 13.40 10317 23.39 26519 12.26 28978 12.71 14414 16.11 14523 7.27 561 9.27
36 2022-09-10 88007 13.07 9220 22.81 25637 12.40 25742 12.04 13370 15.42 13642 7.44 396 10.86
37 2022-09-17 94363 12.73 9788 18.93 26091 12.17 28069 12.72 14241 16.20 15727 6.70 447 13.20
38 2022-09-24 96287 13.61 9345 24.14 26931 13.36 28977 12.35 15042 16.85 15532 6.99 460 10.43
39 2022-10-01 92675 14.45 8311 23.17 29662 13.22 27909 13.57 14884 17.55 11511 9.65 398 7.79
40 2022-10-08 95462 15.06 11290 20.91 31745 13.44 30640 14.46 14766 16.55 6525 13.01 496 6.05
41 2022-10-15 93092 16.58 9618 27.02 32473 13.37 28633 17.02 15441 17.70 6458 13.35 469 5.76
42 2022-10-22 95270 15.39 11962 20.72 32792 12.10 26742 17.29 16894 16.80 6521 11.13 359 7.24
43 2022-10-29 94756 15.78 9563 21.97 33446 11.75 25142 19.65 20195 16.34 5991 10.82 419 8.11
44 2022-11-05 89782 13.91 8906 17.97 32692 11.30 23508 16.57 17710 15.27 6497 8.56 469 8.74
45 2022-11-12 89643 12.43 10513 14.36 31704 10.58 22024 13.83 18372 13.92 6651 9.76 379 6.86
46 2022-11-19 90476 11.97 10650 13.65 30751 11.13 21425 12.63 20655 12.41 6640 9.79 355 7.61
47 2022-11-26 93875 11.76 11661 13.65 33538 11.43 20744 11.77 20339 11.72 7236 10.50 357 8.68
48 2022-12-03 94410 12.12 12354 13.22 35547 12.95 20852 11.38 18486 11.58 6818 9.78 353 7.65
49 2022-12-10 93753 12.63 13445 13.82 34889 13.37 21193 12.30 16624 10.88 7198 12.25 404 4.46
50 2022-12-17 89983 13.10 11781 13.87 34271 14.24 20346 13.88 16279 10.13 6965 10.73 341 14.08
51 2022-12-24 78912 14.15 10225 15.87 30937 14.58 18610 15.78 13249 10.30 5579 12.56 312 9.94
52 2022-12-31 69932 15.61 8458 19.43 25554 15.29 18079 17.14 11699 11.99 5877 14.45 265 6.79
1 2023-01-07 75195 15.09 9934 18.10 24748 13.67 20785 17.96 13420 11.46 5974 14.16 334 13.77
2 2023-01-14 71607 13.41 9630 17.07 22640 12.05 19450 15.40 13853 10.63 5694 12.93 340 8.53
3 2023-01-21 65814 12.26 8435 17.29 21828 10.70 18101 14.33 12528 9.01 4637 11.47 285 8.42
4 2023-01-28 59444 11.34 6656 17.86 19462 9.49 17201 13.27 11560 8.81 4313 9.07 252 6.35
5 2023-02-04 56805 11.49 5958 18.95 18584 10.54 16670 12.57 10929 8.77 4406 8.40 258 5.81

Positive influenza (Flu) tests

Figure 4: Positive influenza (Flu) tests (%) in Canada by region by surveillance week
Figure 4
Figure 4: 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 12769 0.18 0.02 932 0.11 0.11 2404 0.17 0.04 4663 0.11 0.00 2649 0.34 0.04 2006 0.20 0.00 115 0.00 0.00
36 2022-09-10 12637 0.14 0.04 906 0.00 0.00 2520 0.12 0.00 4411 0.16 0.02 2659 0.15 0.08 2055 0.19 0.10 86 0.00 0.00
37 2022-09-17 13539 0.24 0.01 854 0.12 0.00 2618 0.19 0.04 4801 0.31 0.02 2897 0.17 0.00 2247 0.22 0.00 122 0.82 0.00
38 2022-09-24 14521 0.48 0.02 788 0.13 0.00 2714 0.22 0.04 5515 0.38 0.00 3144 0.41 0.03 2226 1.21 0.04 134 1.49 0.00
39 2022-10-01 14943 0.68 0.03 688 0.29 0.15 2873 0.21 0.10 5624 0.66 0.02 3234 0.62 0.00 2411 1.33 0.00 113 3.54 0.00
40 2022-10-08 14585 0.99 0.03 818 0.24 0.00 2339 0.21 0.00 5676 1.02 0.05 3181 0.88 0.03 2430 1.85 0.00 141 4.26 0.00
41 2022-10-15 16307 1.44 0.01 776 1.68 0.00 3275 0.49 0.00 5761 1.89 0.00 3829 0.97 0.03 2540 1.85 0.00 126 10.32 0.00
42 2022-10-22 17826 2.39 0.05 1001 2.60 0.00 3608 0.86 0.03 6230 3.10 0.08 4101 2.12 0.02 2774 2.45 0.07 112 18.75 0.00
43 2022-10-29 18556 5.54 0.03 969 3.72 0.00 3821 1.41 0.08 6013 8.13 0.02 4567 6.90 0.00 3026 3.34 0.07 160 20.63 0.00
44 2022-11-05 21669 10.91 0.03 1209 8.02 0.00 4458 3.45 0.02 7006 11.28 0.04 5715 17.76 0.02 3111 8.07 0.06 170 33.53 0.00
45 2022-11-12 27004 16.20 0.04 2145 11.38 0.05 5731 7.47 0.07 8254 13.28 0.04 7204 27.94 0.03 3507 16.03 0.03 163 19.63 0.00
46 2022-11-19 33291 20.15 0.05 3433 14.54 0.00 6914 13.65 0.04 8727 14.32 0.07 9301 30.99 0.05 4741 23.52 0.04 175 10.86 0.00
47 2022-11-26 40370 24.06 0.04 5140 24.20 0.00 9252 22.84 0.06 9193 16.41 0.03 10338 30.32 0.01 6279 26.74 0.10 168 19.64 0.00
48 2022-12-03 44029 23.83 0.03 6393 27.94 0.02 12431 26.91 0.06 9930 16.05 0.02 9751 24.78 0.03 5334 24.07 0.00 190 34.74 0.00
49 2022-12-10 45446 20.95 0.06 7404 28.55 0.00 12616 25.12 0.13 10560 13.10 0.06 8800 18.65 0.02 5819 19.02 0.07 247 42.51 0.00
50 2022-12-17 44356 17.20 0.07 6554 23.25 0.00 13081 21.57 0.15 10525 10.56 0.02 8264 14.41 0.01 5731 16.18 0.10 201 27.36 0.00
51 2022-12-24 40210 12.50 0.05 5487 16.93 0.00 11742 17.27 0.09 9666 6.57 0.03 8008 9.67 0.01 5122 12.16 0.10 185 19.46 0.00
52 2022-12-31 38348 7.97 0.07 4924 9.36 0.00 10677 12.04 0.14 9370 4.30 0.09 7758 6.38 0.04 5477 7.23 0.04 142 11.97 0.00
1 2023-01-07 39868 4.59 0.07 5460 4.93 0.00 10659 6.90 0.14 10122 3.03 0.08 8311 3.22 0.00 5152 4.54 0.12 164 9.15 0.00
2 2023-01-14 35461 2.24 0.05 4291 2.47 0.02 8879 3.47 0.08 9531 1.29 0.08 7952 1.84 0.01 4646 2.17 0.02 162 5.56 0.00
3 2023-01-21 31232 1.39 0.14 3858 1.17 0.03 8035 2.50 0.25 8462 0.79 0.05 6806 1.16 0.25 3936 1.07 0.05 135 0.00 0.00
4 2023-01-28 28799 0.91 0.15 3184 0.44 0.03 7598 1.29 0.17 8022 0.57 0.15 6331 1.03 0.21 3571 1.09 0.08 93 0.00 0.00
5 2023-02-04 27778 0.74 0.28 3221 0.25 0.00 7606 1.05 0.57 7655 0.57 0.25 5761 1.06 0.24 3434 0.38 0.09 101 0.00 0.00

Positive respiratory syncytial virus (RSV) tests

Figure 5: Positive respiratory syncytial virus (RSV) tests (%) in Canada by region by surveillance week
Figure 5
Figure 5: 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 11585 1.14 832 1.44 1737 3.51 4663 0.54 2443 0.65 1795 0.50 115 7.83
36 2022-09-10 11442 1.12 785 0.64 1737 2.71 4411 1.00 2508 0.52 1915 0.73 86 5.81
37 2022-09-17 12331 1.05 721 0.97 1851 3.51 4801 0.60 2709 0.66 2127 0.38 122 2.46
38 2022-09-24 13335 1.40 707 1.13 1908 5.56 5515 0.98 2921 0.34 2150 0.33 134 1.49
39 2022-10-01 13629 2.11 556 3.06 2029 7.69 5623 1.35 2996 0.73 2312 0.65 113 0.88
40 2022-10-08 13346 2.44 677 2.95 1727 8.92 5675 1.92 2807 0.64 2319 0.95 141 2.13
41 2022-10-15 14337 3.52 695 3.45 2330 11.12 5761 2.46 3141 1.34 2284 1.53 126 1.59
42 2022-10-22 15783 4.56 799 3.38 2644 13.09 6230 3.60 3447 2.15 2551 1.72 112 3.57
43 2022-10-29 16274 6.59 929 4.20 2751 17.52 6010 6.09 3745 2.62 2680 3.10 159 3.14
44 2022-11-05 18915 7.63 964 6.64 3126 20.15 7006 7.09 4658 3.24 2993 3.31 168 1.79
45 2022-11-12 23546 7.54 1867 9.16 3986 16.88 8242 7.01 5898 3.49 3390 4.25 163 1.84
46 2022-11-19 27482 7.51 2538 6.82 4620 14.11 8721 7.41 7387 4.67 4041 5.99 175 2.86
47 2022-11-26 34682 6.65 4680 6.24 6170 9.98 9192 6.80 8329 5.01 6143 5.73 168 2.98
48 2022-12-03 37476 6.93 6110 5.35 8002 7.91 9926 6.85 8157 6.61 5091 8.15 190 1.58
49 2022-12-10 38234 7.36 6227 5.77 8206 6.37 10558 7.62 7504 8.49 5492 8.78 247 2.83
50 2022-12-17 37745 8.71 5921 6.67 8545 5.36 10522 8.33 7140 13.04 5416 11.48 201 2.49
51 2022-12-24 34329 9.26 4905 6.81 7661 5.33 9664 8.14 7114 13.66 4800 13.96 185 4.86
52 2022-12-31 32948 10.69 4669 7.90 6616 6.48 9370 8.19 7032 16.74 5119 15.06 142 7.04
1 2023-01-07 33446 10.40 5144 8.98 6335 6.46 10120 7.99 7536 15.96 4147 14.23 164 3.05
2 2023-01-14 30533 9.12 4078 7.41 5279 4.83 9531 7.09 7108 13.89 4375 12.75 162 4.32
3 2023-01-21 26624 8.47 3667 8.67 4553 6.50 8462 5.13 6065 12.38 3742 11.76 135 11.11
4 2023-01-28 24389 7.97 3037 7.74 4238 5.83 8022 4.62 5579 11.31 3420 13.25 93 8.60
5 2023-02-04 23442 7.11 2906 7.91 4298 5.70 7655 3.78 5197 10.06 3285 11.23 101 10.89

Positive human parainfluenza virus (HPIV) tests

Figure 6: Positive human parainfluenza virus (HPIV) tests (%) in Canada by region by surveillance week
Figure 6
Figure 6: 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 3433 2.80 294 0.34 619 2.75 1151 3.21 967 2.69 402 3.73
36 2022-09-10 3454 3.21 280 5.36 646 3.87 1081 2.96 1025 2.44 422 3.32
37 2022-09-17 3973 3.02 301 5.65 661 3.33 1368 3.36 1112 2.07 530 2.26
38 2022-09-24 4589 2.40 334 1.80 717 2.65 1717 2.56 1274 1.73 547 3.47
39 2022-10-01 4878 3.10 286 1.75 728 4.81 1999 3.60 1327 1.81 538 2.79
40 2022-10-08 5057 3.70 298 2.35 578 6.40 2228 2.92 1386 3.68 567 4.76
41 2022-10-15 5998 3.52 265 5.28 851 4.70 2960 3.04 1323 3.40 599 3.67
42 2022-10-22 7244 4.21 354 3.39 904 4.09 3859 3.55 1420 4.72 707 7.36
43 2022-10-29 8429 4.41 441 3.40 944 4.45 4632 3.52 1572 4.20 839 10.25
44 2022-11-05 9258 4.14 362 7.73 974 2.98 5243 2.96 1857 4.79 822 9.98
45 2022-11-12 10628 3.90 458 5.02 1103 2.81 5832 3.24 2451 4.28 783 8.43
46 2022-11-19 11671 3.97 575 5.91 1243 3.06 5943 3.30 2973 3.87 937 8.54
47 2022-11-26 12299 3.63 677 5.91 1319 3.64 5937 3.17 2644 2.91 1722 5.46
48 2022-12-03 12364 3.04 808 3.71 1439 1.88 6344 2.70 2817 3.48 956 5.23
49 2022-12-10 12670 3.03 962 3.64 1438 2.09 6470 2.43 2710 3.51 1090 6.15
50 2022-12-17 12356 2.98 988 2.94 1350 1.93 6718 2.44 2231 4.03 1069 5.52
51 2022-12-24 11701 3.09 783 3.19 1147 2.01 6638 2.65 2147 3.91 986 5.38
52 2022-12-31 11030 3.32 638 2.82 1016 2.17 6308 2.92 2063 4.36 1005 5.17
1 2023-01-07 11997 3.63 802 3.12 1017 3.24 6863 2.93 2351 4.08 964 8.30
2 2023-01-14 11015 3.24 526 3.80 828 2.17 6446 2.82 2351 3.19 864 7.18
3 2023-01-21 9972 2.92 498 4.02 849 3.06 5818 2.20 1971 4.21 836 4.07
4 2023-01-28 9362 2.78 412 2.91 813 2.58 5596 2.52 1761 2.73 780 4.87
5 2023-02-04 9195 2.64 596 3.19 784 2.68 5337 1.93 1770 3.50 708 5.37

Positive adenovirus (ADV) tests

Figure 7: Positive adenovirus (ADV) tests (%) in Canada by region by surveillance week
Figure 7
Figure 7: 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 3472 2.28 294 6.12 632 2.53 1179 0.76 965 2.69 402 2.49
36 2022-09-10 3478 2.19 280 3.57 659 3.03 1089 1.10 1028 2.43 422 2.13
37 2022-09-17 3991 2.10 301 4.65 679 3.09 1369 1.46 1111 1.35 530 2.64
38 2022-09-24 4604 1.59 334 1.20 731 3.42 1717 1.05 1275 1.41 547 1.46
39 2022-10-01 4894 2.21 286 2.80 742 4.18 2001 1.35 1327 2.11 538 2.60
40 2022-10-08 5068 1.80 298 4.03 583 5.66 2234 1.16 1386 1.23 567 0.53
41 2022-10-15 6013 2.03 265 3.77 864 4.63 2962 0.95 1323 2.12 599 2.67
42 2022-10-22 7255 1.67 354 1.98 915 4.04 3859 0.88 1420 1.69 707 2.69
43 2022-10-29 8441 1.79 441 2.04 955 5.76 4633 1.01 1572 1.97 839 1.07
44 2022-11-05 9271 2.02 362 6.08 987 5.27 5243 1.16 1857 1.99 822 1.82
45 2022-11-12 10610 1.99 458 5.46 1117 6.62 5800 1.03 2451 1.59 783 1.66
46 2022-11-19 11695 1.87 575 4.35 1265 4.66 5946 1.19 2972 1.38 937 2.45
47 2022-11-26 12290 1.89 677 3.99 1333 5.85 5937 0.94 2633 1.52 1710 1.81
48 2022-12-03 12381 1.87 808 4.33 1455 5.09 6344 1.04 2818 1.38 956 1.88
49 2022-12-10 12679 1.68 962 2.81 1450 4.69 6470 1.07 2707 1.00 1090 2.02
50 2022-12-17 12368 2.29 987 4.05 1364 6.16 6718 1.31 2230 1.70 1069 3.09
51 2022-12-24 11718 1.76 783 2.30 1161 5.51 6638 1.11 2150 1.12 986 2.64
52 2022-12-31 11030 1.80 638 2.04 1020 6.57 6308 1.08 2059 1.51 1005 1.99
1 2023-01-07 12009 1.88 802 3.74 1027 6.52 6865 1.12 2351 1.45 964 1.87
2 2023-01-14 11023 1.87 526 3.42 838 6.21 6446 1.12 2349 1.66 864 2.89
3 2023-01-21 9991 1.97 502 4.18 865 5.32 5818 1.31 1970 1.17 836 3.71
4 2023-01-28 9373 2.35 412 2.18 823 8.51 5596 1.39 1762 2.27 780 2.95
5 2023-02-04 9206 2.41 596 4.87 796 8.92 5337 1.14 1769 1.92 708 3.81

Positive human metapneumovirus (HMPV) tests

Figure 8: Positive human metapneumovirus (HMPV) tests (%) in Canada by region by surveillance week
Figure 8
Figure 8: 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 3492 1.80 294 2.38 619 2.91 1179 0.93 998 1.90 402 1.99
36 2022-09-10 3489 1.81 280 1.79 649 3.39 1089 0.92 1049 1.72 422 1.90
37 2022-09-17 3992 1.38 301 2.66 665 3.31 1368 0.51 1127 0.80 530 1.70
38 2022-09-24 4603 1.61 334 0.90 723 4.98 1714 0.53 1285 1.48 547 1.28
39 2022-10-01 4895 1.43 286 1.75 729 4.53 2001 0.45 1341 1.04 538 1.67
40 2022-10-08 5096 1.43 298 1.01 581 5.34 2236 0.45 1414 1.27 567 1.94
41 2022-10-15 6027 1.66 265 1.89 857 6.07 2962 0.41 1344 1.26 599 2.34
42 2022-10-22 7277 1.59 354 0.85 911 6.70 3865 0.52 1440 1.67 707 1.13
43 2022-10-29 8450 1.78 441 1.81 960 6.35 4632 0.97 1577 1.78 839 0.95
44 2022-11-05 9271 1.79 362 2.76 977 7.57 5245 0.57 1865 1.98 822 1.82
45 2022-11-12 10656 2.06 458 3.06 1123 7.84 5838 0.57 2453 2.77 783 2.04
46 2022-11-19 11676 1.89 575 3.65 1247 6.58 5955 0.27 2962 2.87 937 1.81
47 2022-11-26 12281 1.78 677 2.22 1325 6.11 5951 0.55 2618 2.02 1710 2.16
48 2022-12-03 12376 1.86 808 3.22 1440 4.17 6360 0.64 2812 2.88 956 2.30
49 2022-12-10 12530 1.93 962 3.95 1439 3.61 6474 0.85 2565 2.96 1090 1.93
50 2022-12-17 12385 1.92 987 2.84 1350 3.48 6726 0.86 2253 3.86 1069 1.68
51 2022-12-24 11712 2.23 773 3.36 1152 4.08 6652 1.05 2149 4.75 986 1.62
52 2022-12-31 11053 2.75 638 4.08 1020 3.33 6330 1.50 2060 5.92 1005 2.69
1 2023-01-07 12016 2.94 802 3.49 1018 3.24 6871 1.67 2361 5.89 964 3.94
2 2023-01-14 11046 2.61 526 3.04 831 2.77 6464 1.79 2361 4.62 864 2.78
3 2023-01-21 10031 2.56 502 2.99 854 3.16 5849 1.54 1990 4.82 836 3.47
4 2023-01-28 9403 2.71 412 2.18 813 3.32 5631 1.69 1767 5.09 780 4.36
5 2023-02-04 9247 2.88 596 4.03 788 2.03 5367 2.11 1788 4.53 708 4.52

Positive enterovirus/rhinovirus (EV/RV) tests

Figure 9: Positive enterovirus/rhinovirus (EV/RV) tests (%) in Canada by region by surveillance week
Figure 9
Figure 9: 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 2845 15.47 294 30.27 - - 1179 10.18 947 16.79 394 15.48
36 2022-09-10 2817 16.22 280 21.79 - - 1089 11.20 1013 18.76 417 17.99
37 2022-09-17 3337 21.73 301 23.59 - - 1368 20.10 1101 20.62 522 24.33
38 2022-09-24 3847 23.50 334 22.16 - - 1689 22.20 1255 21.59 538 31.78
39 2022-10-01 4150 22.89 286 27.62 - - 2001 19.94 1310 22.29 521 31.67
40 2022-10-08 4488 19.32 298 20.47 - - 2235 15.84 1365 19.85 546 29.67
41 2022-10-15 5161 16.70 265 24.91 - - 2963 11.51 1305 20.15 579 28.67
42 2022-10-22 6332 12.95 354 21.47 - - 3863 7.77 1389 18.14 678 26.40
43 2022-10-29 7496 11.05 441 19.05 - - 4632 7.38 1555 13.95 814 20.64
44 2022-11-05 8272 10.23 362 23.20 - - 5245 6.43 1827 12.10 796 24.37
45 2022-11-12 9526 7.77 458 19.87 - - 5837 4.99 2415 7.99 759 19.89
46 2022-11-19 10427 6.93 575 18.43 - - 5952 4.96 2945 6.25 904 14.49
47 2022-11-26 10986 4.88 677 9.75 - - 5927 3.36 2619 4.39 1678 8.70
48 2022-12-03 10959 4.74 808 9.78 - - 6360 3.21 2787 4.81 931 10.20
49 2022-12-10 11309 4.09 962 7.59 - - 6474 2.90 2693 3.64 1064 8.93
50 2022-12-17 11052 4.58 987 8.81 - - 6726 3.20 2213 4.84 1038 8.67
51 2022-12-24 10580 4.49 783 5.75 - - 6652 3.77 2125 4.89 956 7.53
52 2022-12-31 10049 4.50 638 6.11 - - 6330 3.95 2047 5.23 972 5.25
1 2023-01-07 10998 4.19 802 3.12 - - 6872 4.13 2336 4.32 937 5.02
2 2023-01-14 10199 4.71 526 6.65 - - 6464 4.05 2327 4.86 832 7.81
3 2023-01-21 9133 6.68 502 7.57 - - 5849 5.85 1945 5.86 807 13.88
4 2023-01-28 8567 8.22 412 11.17 - - 5631 6.68 1747 8.70 754 16.84
5 2023-02-04 8404 8.83 596 11.07 - - 5367 7.58 1734 8.54 680 17.21

Positive human coronavirus (HCoV) tests

Figure 10: Positive human coronavirus (HCoV) tests (%) in Canada by region by surveillance week
Figure 10
Figure 10: 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 2818 0.53 294 0.68 610 0.66 523 0.57 997 0.20 394 1.02
36 2022-09-10 2877 0.38 280 0.71 639 0.16 495 0.20 1046 0.67 417 0.00
37 2022-09-17 3264 0.28 301 0.00 654 0.31 658 0.46 1128 0.35 522 0.00
38 2022-09-24 3716 0.32 334 0.00 705 0.57 853 0.23 1286 0.47 538 0.00
39 2022-10-01 4034 0.59 286 0.35 716 0.84 1170 0.34 1341 0.75 521 0.58
40 2022-10-08 4079 0.93 298 1.01 568 0.35 1253 0.56 1414 1.27 546 1.47
41 2022-10-15 4922 1.00 265 0.38 842 1.07 1889 0.53 1347 2.00 579 0.35
42 2022-10-22 6026 1.16 354 0.00 884 1.02 2671 0.79 1439 2.50 678 0.59
43 2022-10-29 7155 1.86 386 0.78 922 0.65 3451 1.45 1581 4.49 814 0.37
44 2022-11-05 7767 2.54 362 0.83 943 2.55 3800 1.97 1866 5.04 796 0.13
45 2022-11-12 9087 3.00 458 0.87 1087 2.48 4325 2.80 2457 4.56 759 1.19
46 2022-11-19 10076 3.54 575 2.61 1193 3.52 4433 2.96 2971 5.02 904 2.21
47 2022-11-26 10690 3.24 677 2.66 1290 3.80 4433 3.50 2612 3.83 1678 1.43
48 2022-12-03 10723 3.94 808 2.72 1381 5.29 4788 4.24 2815 3.13 931 3.97
49 2022-12-10 10887 4.48 962 4.89 1415 5.02 4875 4.21 2571 4.24 1064 5.26
50 2022-12-17 10765 5.13 987 5.78 1350 5.63 5133 4.56 2257 4.70 1038 7.61
51 2022-12-24 10056 5.28 783 6.00 1147 6.63 5024 3.86 2149 5.07 953 11.02
52 2022-12-31 9437 4.73 638 7.21 1016 6.69 4746 3.08 2065 3.83 972 11.01
1 2023-01-07 10141 4.40 802 10.97 1017 5.11 5025 2.95 2360 3.35 937 8.43
2 2023-01-14 9360 4.01 526 9.89 829 3.50 4805 3.64 2368 2.53 832 7.09
3 2023-01-21 8614 3.46 502 6.37 849 4.71 4464 2.91 1992 2.06 807 6.82
4 2023-01-28 7904 2.63 412 4.13 813 5.17 4157 1.88 1768 1.81 754 5.17
5 2023-02-04 7811 3.20 596 4.70 784 5.99 3962 2.42 1789 2.01 680 6.32

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