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Respiratory Virus Report, Week 8 - ending February 25, 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 8 (week ending February 25, 2023) in Canada, participating RVDSS laboratories reported 6,126 detections of SARS-CoV-2 from 52,076 tests (11.8% positive). Among non-SARS-CoV-2 respiratory viruses, where test volumes are lower (range of 7,092 to 24,971 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 and B are circulating at similar levels [(144 detections; 0.6% positive) and influenza B (124 detections; 0.5% 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 25, 2023 (surveillance week 2023-08)
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 575 125 323 0 0 0 0 0 323 25 323 1 0 16 0 0 323 11 323 8 323 29 323 12
Prince Edward Island 566 54 162 0 0 1 1 0 162 34 10 1 0 1 0 0 10 1 10 1 10 1 10 0
Nova Scotia 2078 358 1098 0 0 0 0 0 1098 57 31 1 0 1 0 0 34 0 34 6 34 7 34 3
New Brunswick 1659 372 1281 0 0 1 1 1 1138 59 57 1 0 2 0 0 57 4 57 10 57 14 57 6
Atlantic 4878 909 2864 0 0 2 2 1 2721 175 421 4 0 20 0 0 424 16 424 25 424 51 424 21
Région Nord-Est 1884 187 1494 0 0 22 22 2 412 41 33 0 0 3 0 0 33 3 33 5 N.C. N.C. 33 4
Québec-Chaudière-Appalaches 4267 468 634 0 0 10 10 2 601 21 174 0 0 3 0 0 186 35 174 5 N.C. N.C. 174 6
Centre-du-Québec 3203 376 286 0 0 1 1 2 281 6 26 0 0 1 0 0 26 6 26 2 N.C. N.C. 26 4
Montréal-Laval 4455 520 2666 0 0 26 26 49 1456 52 531 0 0 15 0 0 531 23 533 4 N.C. N.C. 531 27
Ouest du Québec 2679 313 711 0 0 5 5 4 697 26 22 0 0 0 0 0 22 7 22 0 N.C. N.C. 22 0
Montérégie 2719 287 615 0 0 6 6 1 615 12 6 0 0 0 0 0 6 0 6 1 N.C. N.C. 6 1
Province of Québec 19207 2151 6406 0 0 70 70 60 4062 158 792 0 0 22 0 0 804 74 794 17 N.C. N.C. 792 42
P.H.O.L. - Ottawa 554 128 166 0 0 0 0 0 166 20 108 0 0 0 0 1 108 0 108 3 108 20 108 5
EORLA 1757 160 404 0 0 1 1 0 404 13 30 1 0 2 0 0 30 2 30 3 30 6 30 0
P.H.O.L. - Kingston 630 99 106 0 4 0 4 0 106 2 86 0 0 0 0 1 86 1 86 2 86 16 86 2
UHN / Mount Sinai Hospital 2092 118 677 0 0 0 0 1 677 10 85 0 0 2 0 0 85 0 85 1 85 1 85 5
P.H.O.L. - Toronto 836 184 887 2 1 2 3 1 887 40 726 0 0 0 0 21 726 20 726 30 726 80 726 26
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 2099 132 2099 2 1 1 4 7 2099 27 2106 0 0 0 0 17 2106 26 2108 65 2108 96 2108 41
P.H.O.L. - Sault Ste. Marie 25 0 19 0 0 0 0 0 19 0 19 0 0 0 0 2 19 1 19 0 19 1 19 4
P.H.O.L. - Timmins 208 7 31 0 0 0 0 0 31 2 29 0 0 0 0 1 29 0 29 1 29 7 29 2
St. Joseph's - London 2520 272 727 0 0 0 0 0 727 11 71 0 0 0 0 2 71 2 71 3 71 11 71 7
P.H.O.L. - London 811 158 341 0 0 0 0 2 341 17 263 0 0 0 0 7 263 3 263 4 263 57 263 11
P.H.O.L. - Orillia 12 0 52 0 0 0 0 0 52 3 48 0 0 0 0 0 48 1 48 2 48 10 48 1
P.H.O.L. - Thunder Bay 134 25 13 0 0 0 0 0 13 1 13 0 0 0 0 0 13 0 13 1 13 3 13 1
P.H.O.L. - Sudbury 27 3 14 0 0 0 0 0 14 1 14 0 0 0 0 1 14 1 14 6 14 0 14 0
P.H.O.L. - Hamilton 460 157 249 0 1 0 1 0 249 3 166 0 0 0 0 4 166 9 166 14 166 29 166 2
P.H.O.L. - Peterborough 92 31 41 0 0 0 0 0 41 3 37 0 0 0 0 1 37 1 37 1 37 2 37 0
St. Joseph's - Hamilton 2409 291 1388 0 0 5 5 13 1388 9 1388 0 0 16 0 0 1388 33 1388 76 1388 84 0 0
Sault Area Hospital 172 39 94 0 0 0 0 0 94 5 43 0 0 2 0 0 43 0 43 0 43 2 43 0
Province of Ontario 14838 1804 7308 4 7 9 18 24 7308 167 5232 1 0 22 0 58 5232 100 5234 212 5234 425 3846 107
Manitoba 1406 166 975 0 0 1 1 0 975 56 95 2 0 6 0 0 95 2 106 5 95 13 106 6
Saskatchewan 2534 173 882 0 0 5 5 4 792 96 319 2 3 6 0 0 319 6 319 16 319 40 319 9
Alberta 4748 391 2979 7 6 13 26 18 2728 106 1006 6 0 25 1 0 1005 15 1005 36 993 92 1006 10
Prairies 8688 730 4836 7 6 19 32 22 4495 258 1420 10 3 37 1 0 1419 23 1430 57 1407 145 1431 25
British Columbia 4258 505 3469 7 3 0 22 10 3265 223 629 3 0 31 0 0 629 22 629 47 599 101 599 21
Yukon 104 14 32 0 0 0 0 1 32 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 30 7 22 0 0 0 0 0 22 5 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 22 3 N.C. N.C.
Nunavut 73 6 34 0 0 0 0 6 34 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 207 27 88 0 0 0 0 7 88 12 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 22 3 N.C. N.C.
CANADA 52076 6126 24971 18 16 100 144 124 21939 993 8494 18 3 132 1 58 8508 235 8511 358 7686 725 7092 216

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 25, 2023 (surveillance weeks 2022-35 to 2023-08)
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 15354 2990 8479 1 246 667 914 0 8479 340 8479 14 30 119 20 0 8479 172 8479 302 8479 685 8479 318
Prince Edward Island 27755 6440 2852 1 119 242 362 0 2852 309 1047 16 25 76 6 0 1047 62 1047 24 1047 320 1047 31
Nova Scotia 108002 21894 30850 0 4 3610 3614 2 30840 2256 1010 5 16 25 3 0 1016 37 1006 15 1016 197 1016 35
New Brunswick 93504 13541 37302 4 132 4404 4540 7 29814 1877 2693 6 23 128 7 0 2693 197 2693 93 2693 495 2638 167
Atlantic 244615 44865 79483 6 501 8923 9430 9 71985 4782 13229 41 94 348 36 0 13235 468 13225 434 13235 1697 13180 551
Région Nord-Est 70187 9000 37995 0 4 3643 3647 12 12428 1234 988 7 3 60 0 0 988 67 980 68 N.C. N.C. 988 56
Québec-Chaudière-Appalaches 152179 15062 19596 0 0 2804 2804 14 19147 1818 5375 21 5 55 0 0 5702 414 5375 266 N.C. N.C. 5375 219
Centre-du-Québec 121208 17061 12811 0 0 1749 1749 24 11086 888 710 13 0 30 2 0 710 68 710 63 N.C. N.C. 710 38
Montréal-Laval 166559 21770 71513 0 9 6026 6035 227 38474 2451 16437 123 13 325 12 0 16446 709 16552 653 N.C. N.C. 16122 549
Ouest du Québec 93426 12688 17327 0 7 2163 2170 23 15233 1219 826 20 0 58 1 0 825 157 826 48 N.C. N.C. 827 41
Montérégie 117377 13790 17476 0 0 1646 1646 16 16861 1028 104 0 0 2 0 0 104 2 104 5 N.C. N.C. 104 3
Province of Québec 720936 89371 176718 0 20 18031 18051 316 113229 8638 24440 184 21 530 15 0 24775 1417 24547 1103 N.C. N.C. 24126 906
P.H.O.L. - Ottawa 24459 6136 3977 17 134 66 212 0 3977 323 2784 0 0 0 0 66 2784 10 2784 45 2784 224 2784 100
EORLA 70974 7441 12405 0 0 1387 1387 5 12405 1239 979 9 3 43 16 0 979 45 979 35 979 217 979 63
P.H.O.L. - Kingston 25229 4285 2147 2 92 38 132 1 2146 172 1777 0 0 0 0 70 1778 26 1778 34 1777 201 1778 59
UHN / Mount Sinai Hospital 77449 6155 16735 4 43 345 392 18 16735 263 1367 0 0 9 0 0 1334 4 1367 6 1367 41 1367 59
P.H.O.L. - Toronto 45832 9822 20537 85 2396 143 1096 12 20507 1202 17812 0 0 0 0 720 17816 297 17812 284 17812 1468 17812 747
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 66157 4917 66159 78 1456 720 2254 47 66159 2127 43374 4 0 16 0 484 43387 399 43630 397 43578 1417 43470 685
P.H.O.L. - Sault Ste. Marie 1513 295 536 1 52 15 58 0 536 19 471 0 0 0 0 46 471 4 471 30 471 19 471 27
P.H.O.L. - Timmins 7779 793 835 0 161 6 156 0 834 93 810 0 0 0 0 48 810 12 810 13 810 59 810 35
St. Joseph's - London 102932 13352 14205 0 0 874 874 20 14205 965 1506 0 0 0 0 55 1540 48 1540 17 1540 223 1128 70
P.H.O.L. - London 30647 6676 8472 10 584 62 638 8 8471 843 6838 0 0 0 0 343 6839 80 6839 84 6838 565 6839 243
P.H.O.L. - Orillia 489 240 1933 6 260 23 289 0 1933 224 1868 0 0 0 0 111 1868 37 1868 53 1868 253 1868 91
P.H.O.L. - Thunder Bay 7442 1549 832 0 107 3 110 0 831 91 739 0 0 0 0 32 739 16 739 13 739 49 739 19
P.H.O.L. - Sudbury 1798 277 620 1 65 14 67 0 620 61 517 0 0 0 0 22 517 6 517 26 517 34 517 20
P.H.O.L. - Hamilton 22236 5949 6969 7 300 92 399 11 6966 508 4991 0 0 0 0 205 4993 76 4991 79 4991 461 4991 173
P.H.O.L. - Peterborough 3845 700 1028 0 67 11 78 0 1028 105 840 0 0 0 0 29 840 10 840 29 840 109 840 28
St. Joseph's - Hamilton 76818 11555 33478 0 0 2696 2696 37 33478 2210 33478 0 0 855 0 0 33478 332 33478 376 33478 2282 0 0
Sault Area Hospital 10828 1881 6846 1 262 257 520 0 6846 101 2076 35 0 48 3 0 2076 37 2076 90 2076 202 2076 50
Province of Ontario 576427 82023 197714 212 5979 6752 11358 159 197677 10546 122227 48 3 971 19 2231 122249 1439 122519 1611 122465 7824 88469 2469
Manitoba 54471 9536 28813 16 200 1760 1976 4 28813 1574 4105 7 4 152 6 0 4095 115 4241 173 4105 597 4241 169
Saskatchewan 140290 11258 32457 2 41 3845 3888 13 25221 1965 10691 38 43 488 8 0 10694 257 10696 566 10694 970 10690 365
Alberta 187832 29365 96387 928 7283 2777 10988 118 83515 7303 33536 188 63 702 36 0 33523 404 33482 901 32966 2962 33536 928
Prairies 382593 50159 157657 946 7524 8382 16852 135 137549 10842 48332 233 110 1342 50 0 48312 776 48419 1640 47765 4529 48467 1462
British Columbia 193234 19146 98119 350 4337 298 8756 86 91606 7275 20887 157 165 765 138 6 20875 498 20875 593 20250 3162 20247 818
Yukon 4470 329 651 2 136 0 138 1 649 37 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 1377 168 1254 2 147 1 150 0 1254 81 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 1254 252 N.C. N.C.
Nunavut 3535 332 1791 3 230 3 236 6 1791 46 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 9382 829 3696 7 513 4 524 7 3694 164 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 1254 252 N.C. N.C.
CANADA 2127187 286393 713387 1521 18874 42390 64971 712 615740 42247 229115 663 393 3956 258 2237 229446 4598 229585 5381 204969 17464 194489 6206

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 11.35 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 11.56 0.75 0.03 0.00 23.66 15.78 19.14 0.28 0.01 0.00 14.84 0.41 5.76 7.18 2.19 0.04 16.33 7.17 11.49
6 2023-02-11 11.91 0.68 0.04 0.02 23.36 15.63 18.79 0.34 0.01 0.00 16.23 0.44 6.21 5.79 2.10 0.08 15.79 6.52 11.70
7 2023-02-18 11.80 0.55 0.02 0.00 24.22 15.48 18.52 0.29 0.00 0.00 17.02 0.35 6.54 5.14 2.16 0.02 15.53 6.95 11.26
8 2023-02-25 11.76 0.58 0.06 0.00 28.62 12.42 18.53 0.50 0.02 0.00 16.79 0.45 6.60 4.53 2.12 0.05 15.47 6.64 10.63
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 8.94 3.02 4.76 9.79 6.06 6.94 2.70 0.48 0.06 3.48 1.70 2.39 2.44 1.57 0.29 1.93 1.36 1.62 2.96 0.25 0.16 5.70 0.58 3.29 3.20 2.83 0.13 8.49 4.55 6.84
6 2023-02-11 9.89 3.86 5.08 9.89 6.16 6.98 2.68 0.51 0.10 2.89 1.57 2.19 2.12 1.44 0.54 1.74 1.25 1.51 3.74 0.42 0.19 5.57 0.65 3.39 2.62 3.01 0.20 8.57 3.48 6.75
7 2023-02-18 9.78 4.46 5.56 8.95 6.00 7.02 2.64 0.44 0.00 3.20 1.42 2.12 2.29 1.52 0.49 1.61 1.30 1.51 4.30 0.44 0.14 6.05 1.45 3.94 3.17 3.24 0.13 8.02 4.35 6.54
8 2023-02-25 9.43 6.31 4.77 8.35 5.20 6.94 2.50 0.73 0.16 3.21 1.31 2.25 2.76 1.85 0.72 2.00 1.38 1.67 4.21 0.53 0.04 5.74 1.19 4.08 3.05 3.67 0.14 8.29 4.21 6.60

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 59464 11.35 6656 17.86 19478 9.48 17201 13.27 11564 8.86 4313 9.07 252 6.35
5 2023-02-04 56552 11.56 5958 18.95 18579 10.53 16669 12.57 10944 8.89 4144 8.93 258 5.81
6 2023-02-11 55869 11.91 6104 18.18 19685 11.60 16025 12.38 9658 8.38 4138 10.73 259 9.65
7 2023-02-18 54612 11.80 5613 17.66 19603 11.22 15745 12.81 9266 8.09 4178 10.91 207 14.49
8 2023-02-25 52076 11.76 4878 18.63 19207 11.20 14838 12.16 8688 8.40 4258 11.86 207 13.04

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 7597 1.29 0.17 8022 0.57 0.15 6332 1.01 0.21 3571 1.09 0.08 93 0.00 0.00
5 2023-02-04 28377 0.75 0.28 3221 0.25 0.00 7614 1.06 0.56 7653 0.55 0.25 6261 1.12 0.24 3527 0.37 0.09 101 0.00 0.00
6 2023-02-11 27945 0.68 0.34 3116 0.10 0.03 7619 1.00 0.45 7451 0.44 0.31 6137 1.06 0.39 3502 0.40 0.34 120 0.00 0.00
7 2023-02-18 25813 0.55 0.29 3068 0.10 0.00 6831 0.91 0.45 7240 0.23 0.18 5188 0.89 0.33 3403 0.38 0.41 83 0.00 0.00
8 2023-02-25 24971 0.58 0.50 2864 0.07 0.03 6406 1.09 0.94 7308 0.25 0.33 4836 0.66 0.45 3469 0.63 0.29 88 0.00 7.95

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 4237 5.81 8022 4.62 5580 11.31 3420 13.25 93 8.60
5 2023-02-04 24100 7.18 2906 7.91 4304 5.72 7653 3.78 5758 10.04 3378 11.13 101 11.88
6 2023-02-11 24226 5.79 2953 7.42 4604 3.84 7451 3.21 5771 7.17 3327 10.25 120 10.83
7 2023-02-18 22453 5.14 2897 6.83 4204 3.64 7240 3.18 4891 6.36 3137 8.13 84 9.52
8 2023-02-25 21939 4.53 2721 6.43 4062 3.89 7308 2.29 4495 5.74 3265 6.83 88 13.64

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 9363 2.78 413 2.91 813 2.58 5596 2.52 1761 2.73 780 4.87
5 2023-02-04 9383 2.70 596 3.19 788 3.05 5337 1.93 1870 3.58 792 5.05
6 2023-02-11 9014 2.68 420 5.95 816 3.19 5274 1.80 1767 3.00 737 5.83
7 2023-02-18 8705 2.64 449 4.45 856 3.74 5233 1.43 1477 4.74 690 4.78
8 2023-02-25 8494 2.50 421 5.70 792 2.78 5232 1.55 1420 3.59 629 5.41

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 9374 2.35 413 2.18 823 8.51 5596 1.39 1762 2.27 780 2.95
5 2023-02-04 9398 2.44 596 4.87 804 9.20 5337 1.14 1869 1.93 792 3.66
6 2023-02-11 9027 2.12 420 2.38 830 9.16 5274 1.14 1766 1.64 737 2.17
7 2023-02-18 8717 2.29 449 2.45 867 6.81 5234 1.55 1477 1.49 690 3.91
8 2023-02-25 8508 2.76 424 3.77 804 9.20 5232 1.91 1419 1.62 629 3.50

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 9404 2.71 413 2.18 813 3.32 5631 1.69 1767 5.09 780 4.36
5 2023-02-04 9432 2.96 596 4.03 792 2.15 5367 2.11 1885 4.88 792 4.17
6 2023-02-11 9029 3.74 420 5.48 817 3.67 5291 2.51 1764 5.27 737 8.01
7 2023-02-18 8719 4.30 449 9.58 857 3.27 5235 3.30 1488 5.17 690 7.83
8 2023-02-25 8511 4.21 424 5.90 794 2.14 5234 4.05 1430 3.99 629 7.47

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 8568 8.22 413 11.14 - - 5631 6.68 1747 8.70 754 16.84
5 2023-02-04 8581 8.94 596 11.07 - - 5367 7.60 1827 8.65 764 17.15
6 2023-02-11 8210 9.89 420 12.62 - - 5291 8.20 1748 10.30 707 19.52
7 2023-02-18 7831 9.78 449 11.58 - - 5235 8.31 1458 10.49 669 18.24
8 2023-02-25 7686 9.43 424 12.03 - - 5234 8.12 1407 10.31 599 16.86

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 7905 2.63 413 4.12 813 5.17 4157 1.88 1768 1.81 754 5.17
5 2023-02-04 7997 3.20 596 4.70 788 5.96 3962 2.42 1887 2.12 764 5.89
6 2023-02-11 7586 2.62 420 5.24 816 6.62 3877 1.81 1766 1.70 707 3.25
7 2023-02-18 7278 3.17 449 4.45 856 5.96 3813 2.62 1491 1.88 669 4.78
8 2023-02-25 7092 3.05 424 4.95 792 5.30 3846 2.78 1431 1.75 599 3.51

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