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Respiratory Virus Report, Week 4 - ending January 28, 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 4 (week ending January 28, 2023) in Canada, participating RVDSS laboratories reported 6,791 detections of SARS-CoV-2 from 59,990 tests (11.3% positive). Among non-SARS-CoV-2 respiratory viruses, where test volumes are lower (range of 7,711 to 28,217 tests), activity of nearly all viruses is stable or decreasing.

  • Activity of influenza continues to decrease and remains at inter-seasonal levels. Influenza A accounts for nearly all influenza detections in Canada (249 detections; 0.9% positive).
  • Compared to pre-pandemic seasons, RSV activity remains within expected levels typical of this time of year (1,885 detections; 7.9% 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 January 28, 2023 (surveillance week 2023-04)
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 703 73 277 0 0 0 0 0 277 20 277 3 0 7 0 0 277 6 277 6 277 14 277 11
Prince Edward Island 645 71 124 0 2 2 4 0 124 31 17 0 0 0 0 0 17 1 17 0 17 4 17 3
Nova Scotia 3109 765 1433 0 0 3 3 0 1433 98 31 0 0 0 0 0 31 0 31 1 31 6 31 1
New Brunswick 2199 280 1350 0 0 7 7 1 1203 86 88 1 0 1 0 0 88 2 88 2 88 22 88 2
Atlantic 6656 1189 3184 0 2 12 14 1 3037 235 413 4 0 8 0 0 413 9 413 9 413 46 413 17
Région Nord-Est 1987 136 1689 0 0 22 22 1 416 56 42 0 0 3 0 0 42 4 42 5 N.C. N.C. 42 4
Québec-Chaudière-Appalaches 4074 290 745 0 0 11 11 0 720 50 202 1 0 0 0 0 209 21 202 12 N.C. N.C. 202 2
Centre-du-Québec 3445 367 427 0 0 9 9 1 335 9 22 0 0 2 0 0 22 4 22 0 N.C. N.C. 22 1
Montréal-Laval 4072 443 3266 0 0 39 39 11 1350 45 509 0 0 12 0 0 509 32 509 9 N.C. N.C. 509 28
Ouest du Québec 2592 273 807 0 0 4 4 0 776 51 26 0 0 1 0 0 26 7 26 1 N.C. N.C. 26 4
Montérégie 3295 338 652 0 0 12 12 0 630 33 1 0 0 0 0 0 1 0 1 0 N.C. N.C. 1 1
Province of Québec 19465 1847 7586 0 0 97 97 13 4227 244 802 1 0 18 0 0 809 68 802 27 N.C. N.C. 802 40
P.H.O.L. - Ottawa 548 119 179 2 2 0 4 0 179 32 112 0 0 0 0 5 112 1 112 0 112 10 112 8
EORLA 2184 207 521 0 0 5 5 0 521 32 30 0 0 3 0 0 30 0 30 0 30 4 30 5
P.H.O.L. - Kingston 692 121 88 0 0 0 0 0 88 10 57 0 0 0 0 0 57 0 57 0 57 1 57 1
UHN / Mount Sinai Hospital 2464 189 738 0 0 6 6 1 738 11 83 0 0 0 0 0 83 2 83 0 83 3 83 0
P.H.O.L. - Toronto 951 219 821 4 10 0 4 0 821 51 692 0 0 0 0 27 692 26 692 20 692 72 692 38
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 2376 176 2376 3 7 4 14 2 2376 52 2354 0 0 0 0 32 2354 28 2389 31 2389 115 2388 13
P.H.O.L. - Sault Ste. Marie 39 10 29 0 0 1 1 0 29 1 29 0 0 0 0 2 29 0 29 2 29 0 29 3
P.H.O.L. - Timmins 186 10 21 0 0 0 0 0 21 3 21 0 0 0 0 1 21 0 21 1 21 1 21 2
St. Joseph's - London 2893 384 761 0 0 1 1 4 761 33 62 0 0 0 0 1 62 1 62 1 62 11 62 0
P.H.O.L. - London 815 169 386 0 1 1 1 1 386 48 258 0 0 0 0 14 258 0 258 6 258 15 258 3
P.H.O.L. - Orillia 19 11 58 0 0 0 0 0 58 3 58 0 0 0 0 1 58 1 58 1 58 15 58 2
P.H.O.L. - Thunder Bay 195 29 33 0 0 0 0 0 33 6 29 0 0 0 0 2 29 0 29 0 29 0 29 0
P.H.O.L. - Sudbury 26 2 20 0 0 0 0 0 20 3 19 0 0 0 0 0 19 0 19 1 19 5 19 0
P.H.O.L. - Hamilton 692 215 369 2 1 0 3 2 369 32 258 0 0 0 0 17 258 7 258 4 258 24 258 2
P.H.O.L. - Peterborough 142 13 37 0 0 0 0 0 37 3 26 0 0 0 0 1 26 0 26 5 26 3 26 0
St. Joseph's - Hamilton 2723 340 1473 0 0 7 7 2 1473 46 1473 0 0 34 0 0 1473 12 1473 22 1473 94 0 0
Sault Area Hospital 256 68 112 0 0 0 0 0 112 5 34 1 0 0 0 0 34 0 34 1 34 3 34 1
Province of Ontario 17201 2282 8022 11 21 25 46 12 8022 371 5595 1 0 37 0 103 5595 78 5630 95 5630 376 4156 78
Manitoba 2103 221 1324 0 0 7 7 2 1324 76 109 0 0 3 0 0 109 2 127 8 109 7 127 6
Saskatchewan 5000 216 1200 0 0 7 7 0 990 157 433 0 0 14 0 0 435 18 435 19 435 38 434 7
Alberta 5008 629 3322 16 6 17 39 10 2834 349 1108 7 1 21 0 0 1107 15 1107 47 1100 97 1108 19
Prairies 12111 1066 5846 16 6 31 53 12 5148 582 1650 7 1 38 0 0 1651 35 1669 74 1644 142 1669 32
British Columbia 4305 391 3486 2 5 1 39 3 3335 443 697 3 0 24 1 0 697 20 697 27 671 110 671 36
Yukon 130 6 22 0 0 0 0 0 22 3 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 19 1 23 0 0 0 0 0 23 6 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 23 3 N.C. N.C.
Nunavut 103 9 48 0 0 0 0 0 48 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 252 16 93 0 0 0 0 0 93 10 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 23 3 N.C. N.C.
CANADA 59990 6791 28217 29 34 166 249 41 23862 1885 9157 16 1 125 1 103 9165 210 9211 232 8381 677 7711 203

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 January 28, 2023 (surveillance weeks 2022-35 to 2023-04)
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 13178 2654 7280 1 246 665 912 0 7280 269 7280 7 29 61 18 0 7280 151 7280 261 7280 573 7280 266
Prince Edward Island 25186 6148 2338 1 119 239 359 0 2338 206 987 15 25 74 6 0 987 59 987 12 987 310 987 30
Nova Scotia 98432 19885 26021 0 4 3604 3608 1 26011 1947 874 4 16 21 3 0 877 35 867 3 877 169 877 24
New Brunswick 85266 12039 31575 4 132 4399 4535 6 24879 1538 2202 4 20 121 7 0 2202 157 2202 43 2202 423 2147 140
Atlantic 222062 40726 67214 6 501 8907 9414 7 60508 3960 11343 30 90 277 34 0 11346 402 11336 319 11346 1475 11291 460
Région Nord-Est 62523 8361 31381 0 2 3559 3561 8 10665 1071 829 7 3 49 0 0 829 44 821 55 N.C. N.C. 829 41
Québec-Chaudière-Appalaches 136128 13428 16900 0 0 2774 2774 12 16569 1686 4658 21 5 40 0 0 4928 317 4658 235 N.C. N.C. 4658 189
Centre-du-Québec 107606 15365 11434 0 0 1742 1742 15 9816 833 594 13 0 26 2 0 594 50 594 57 N.C. N.C. 594 27
Montréal-Laval 148782 19659 59276 0 9 5904 5913 92 32321 2257 14276 123 13 255 10 0 14285 583 14383 619 N.C. N.C. 13961 419
Ouest du Québec 82694 11387 14300 0 7 2140 2147 9 12337 1084 733 20 0 54 1 0 732 136 733 41 N.C. N.C. 734 32
Montérégie 106129 12595 14941 0 0 1624 1624 12 14330 971 82 0 0 2 0 0 82 1 82 4 N.C. N.C. 82 2
Province of Québec 643862 80795 148232 0 18 17743 17761 148 96038 7902 21172 184 21 426 13 0 21450 1131 21271 1011 N.C. N.C. 20858 710
P.H.O.L. - Ottawa 22110 5644 3208 13 133 65 206 0 3208 258 2310 0 0 0 0 57 2310 8 2310 31 2310 150 2310 74
EORLA 63592 6842 10767 0 0 1374 1374 3 10767 1184 848 8 3 35 16 0 848 42 848 25 848 192 848 59
P.H.O.L. - Kingston 22379 3796 1814 2 88 38 128 1 1813 153 1509 0 0 0 0 66 1510 21 1510 24 1509 162 1510 53
UHN / Mount Sinai Hospital 68484 5540 13925 4 43 342 389 15 13925 229 934 0 0 4 0 0 901 4 934 0 934 29 934 42
P.H.O.L. - Toronto 42522 9060 17392 75 2388 141 1087 1 17363 1025 15061 0 0 0 0 626 15064 233 15061 199 15061 1151 15061 627
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 57754 4384 57757 64 1448 716 2228 22 57756 1979 34979 4 0 16 0 423 34992 315 35184 220 35132 998 35024 574
P.H.O.L. - Sault Ste. Marie 1367 255 436 1 52 15 58 0 436 11 381 0 0 0 0 37 381 1 381 26 381 14 381 12
P.H.O.L. - Timmins 6995 754 734 0 161 6 156 0 733 66 712 0 0 0 0 41 712 12 712 11 712 48 712 28
St. Joseph's - London 91690 12036 11119 0 0 868 868 16 11119 902 1264 0 0 0 0 47 1298 41 1298 7 1298 190 886 60
P.H.O.L. - London 27214 5949 6947 8 580 61 631 4 6946 723 5758 0 0 0 0 305 5759 69 5759 51 5758 398 5759 221
P.H.O.L. - Orillia 443 230 1715 6 260 23 289 0 1715 212 1656 0 0 0 0 108 1656 33 1656 36 1656 206 1656 85
P.H.O.L. - Thunder Bay 6856 1456 721 0 107 3 110 0 720 70 631 0 0 0 0 30 631 15 631 8 631 44 631 14
P.H.O.L. - Sudbury 1663 248 545 1 65 14 67 0 545 56 446 0 0 0 0 20 446 5 446 16 446 28 446 20
P.H.O.L. - Hamilton 20312 5374 5893 7 299 91 397 6 5890 473 4247 0 0 0 0 186 4249 51 4247 44 4247 347 4247 161
P.H.O.L. - Peterborough 3395 606 850 0 64 9 73 0 850 90 724 0 0 0 0 26 724 7 724 23 724 100 724 26
St. Joseph's - Hamilton 66419 10266 27849 0 0 2671 2671 12 27849 2120 27849 0 0 781 0 0 27849 245 27849 173 27849 1875 0 0
Sault Area Hospital 9955 1682 6390 1 260 255 516 0 6390 70 1841 34 0 43 2 0 1841 35 1841 86 1841 190 1841 40
Province of Ontario 513150 74122 168062 182 5948 6692 11248 80 168025 9621 101150 46 3 879 18 1972 101171 1137 101391 980 101337 6122 72970 2096
Manitoba 49260 8992 24048 16 196 1745 1957 2 24048 1318 3680 2 4 132 6 0 3670 109 3789 154 3680 563 3789 143
Saskatchewan 128124 10487 28184 0 0 3871 3871 8 21456 1480 9301 29 39 426 8 0 9305 220 9307 499 9305 807 9302 340
Alberta 167184 27450 82078 854 7262 2681 10797 46 70285 6411 28638 156 62 596 32 0 28627 330 28595 642 28175 2505 28638 856
Prairies 344568 46929 134310 870 7458 8297 16625 56 115789 9209 41619 187 105 1154 46 0 41602 659 41691 1295 41160 3875 41729 1339
British Columbia 176501 17371 84056 326 4318 297 8693 47 78217 6065 17885 141 159 644 119 6 17873 397 17873 389 17357 2635 17354 691
Yukon 4036 276 534 2 136 0 138 0 531 16 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 1242 150 1141 2 147 1 150 0 1141 63 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 1141 234 N.C. N.C.
Nunavut 3172 306 1629 3 230 3 236 0 1629 40 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 8450 732 3304 7 513 4 524 0 3301 119 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 1141 234 N.C. N.C.
CANADA 1908593 260675 605178 1391 18756 41940 64265 338 521878 36876 193169 588 378 3380 230 1978 193442 3726 193562 3994 172341 14341 164202 5296

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 8.46 3.42 0.03 15.56 6.72 10.32
4 2023-01-28 11.32 0.88 0.05 0.00 27.01 12.34 18.81 0.15 0.00 0.00 12.74 0.41 5.15 7.90 2.33 0.05 15.88 7.02 11.23
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 8.08 2.60 3.87 9.04 4.89 6.41 2.69 0.64 0.06 3.12 1.77 2.55 2.29 1.18 0.46 1.83 1.11 1.49 2.52 0.23 0.12 5.19 0.55 3.01 2.63 3.92 0.16 7.86 3.79 6.08

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 65811 12.26 8435 17.29 21830 10.71 18101 14.33 12524 8.98 4637 11.47 284 8.45
4 2023-01-28 59990 11.32 6656 17.86 19465 9.49 17201 13.27 12111 8.80 4305 9.08 252 6.35

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 31226 1.39 0.14 3858 1.17 0.03 8034 2.50 0.25 8462 0.79 0.05 6801 1.16 0.25 3936 1.07 0.05 135 0.00 0.00
4 2023-01-28 28217 0.88 0.15 3184 0.44 0.03 7586 1.28 0.17 8022 0.57 0.15 5846 0.91 0.21 3486 1.12 0.09 93 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 26618 8.46 3667 8.67 4551 6.50 8462 5.13 6061 12.39 3742 11.76 135 9.63
4 2023-01-28 23862 7.90 3037 7.74 4227 5.77 8022 4.62 5148 11.31 3335 13.28 93 10.75

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 9968 2.92 498 4.02 848 3.07 5818 2.20 1968 4.22 836 4.07
4 2023-01-28 9157 2.69 413 2.91 802 2.37 5595 2.52 1650 2.79 697 4.02

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 9987 1.97 502 4.18 864 5.32 5818 1.31 1967 1.17 836 3.71
4 2023-01-28 9165 2.29 413 2.18 809 8.41 5595 1.39 1651 2.12 697 2.87

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 10028 2.56 502 2.99 853 3.17 5849 1.54 1988 4.83 836 3.47
4 2023-01-28 9211 2.52 413 2.18 802 3.37 5630 1.69 1669 4.43 697 3.87

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 9130 6.68 502 7.57 - - 5849 5.85 1942 5.87 807 13.88
4 2023-01-28 8381 8.08 413 11.14 - - 5630 6.68 1644 8.64 671 16.39

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 8611 3.46 502 6.37 848 4.72 4464 2.91 1990 2.06 807 6.82
4 2023-01-28 7711 2.63 413 4.12 802 4.99 4156 1.88 1669 1.92 671 5.37

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