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Respiratory Virus Report, Week 2 - ending January 14, 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 2 (week ending January 14, 2023) in Canada, participating RVDSS laboratories reported 9,575 detections of SARS-CoV-2 from 71,421 tests (13.4% positive). Among non-SARS-CoV-2 respiratory viruses, where test volumes are lower (range of 9,117 to 34,515 tests), activity of all viruses is stable or decreasing.

  • Activity of influenza continues to decrease sharply and is now below the epidemic threshold. Influenza A accounts for nearly all influenza detections in Canada (779 detections; 2.3% positive).
  • Activity of RSV is following seasonal trends at the national level. Compared to pre-pandemic seasons, RSV activity is near average levels typical of this time of year (2,671 detections; 9.2% positive).
  • Activity of all other non-SARS-CoV-2 respiratory viruses is near expected levels typical of this time of year.
  • 33/35 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 14, 2023 (surveillance week 2023-02)
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 724 100 374 0 0 19 19 0 374 8 374 0 1 10 0 0 374 6 374 5 374 14 374 39
Prince Edward Island 903 162 200 0 0 10 10 0 200 30 20 0 0 3 0 0 20 1 20 0 20 4 20 2
Nova Scotia 3796 938 1574 0 0 38 38 0 1574 138 33 0 0 1 0 0 33 1 33 0 33 2 33 1
New Brunswick 4207 444 2143 0 8 31 39 1 1930 126 99 0 0 5 0 0 99 10 99 11 99 15 99 10
Atlantic 9630 1644 4291 0 8 98 106 1 4078 302 526 0 1 19 0 0 526 18 526 16 526 35 526 52
Région Nord-Est 2628 314 1718 0 0 112 112 1 559 45 30 0 0 1 0 0 30 3 30 0 N.C. N.C. 30 2
Québec-Chaudière-Appalaches 5348 555 1018 0 0 49 49 0 965 53 165 0 1 1 0 0 174 14 165 12 N.C. N.C. 165 3
Centre-du-Québec 3849 509 521 0 0 17 17 0 414 19 25 1 0 1 1 0 25 5 25 2 N.C. N.C. 25 2
Montréal-Laval 4123 566 3787 0 1 97 98 6 1557 45 565 0 0 9 0 0 565 24 568 6 N.C. N.C. 565 21
Ouest du Québec 3211 382 1021 0 0 18 18 1 989 63 20 0 0 3 0 0 20 4 20 1 N.C. N.C. 21 0
Montérégie 3376 398 757 0 0 12 12 0 731 27 5 0 0 0 0 0 5 0 5 0 N.C. N.C. 5 0
Province of Québec 22535 2724 8822 0 1 305 306 8 5215 252 810 1 1 15 1 0 819 50 813 21 N.C. N.C. 811 28
P.H.O.L. - Ottawa 812 208 249 1 0 1 2 0 249 32 140 0 0 0 0 4 140 0 140 8 140 5 140 10
EORLA 1877 146 508 0 0 14 14 0 508 41 30 1 0 1 0 0 30 3 30 1 30 5 30 1
P.H.O.L. - Kingston 733 179 133 0 0 0 0 0 133 20 82 0 0 0 0 2 82 1 82 0 82 2 82 5
UHN / Mount Sinai Hospital 2737 266 700 1 0 6 7 0 700 14 68 0 0 0 0 0 68 0 68 0 68 4 68 2
P.H.O.L. - Toronto 1172 283 1205 5 24 3 18 0 1205 129 1011 0 0 0 0 37 1011 12 1011 26 1011 66 1011 73
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 2436 233 2436 6 22 2 30 3 2436 93 2432 0 0 0 0 36 2432 24 2450 27 2450 48 2450 35
P.H.O.L. - Sault Ste. Marie 20 3 20 0 4 2 4 0 20 0 16 0 0 0 0 3 16 0 16 1 16 0 16 3
P.H.O.L. - Timmins 200 15 55 0 1 0 1 0 55 14 52 0 0 0 0 0 52 2 52 1 52 2 52 6
St. Joseph's - London 3462 449 908 0 0 5 5 3 908 71 85 0 0 0 0 5 85 2 85 0 85 7 85 3
P.H.O.L. - London 969 252 523 0 1 0 1 2 523 68 368 0 0 0 0 17 368 7 368 3 368 8 368 16
P.H.O.L. - Orillia 6 0 64 2 2 0 4 0 64 9 62 0 0 0 0 2 62 2 62 9 62 5 62 2
P.H.O.L. - Thunder Bay 285 75 74 0 0 0 0 0 74 12 60 0 0 0 0 6 60 1 60 3 60 0 60 1
P.H.O.L. - Sudbury 79 16 67 0 1 2 2 0 67 11 49 0 0 0 0 1 49 0 49 4 49 2 49 3
P.H.O.L. - Hamilton 882 310 504 0 4 2 6 0 504 37 257 0 0 0 0 11 257 4 257 5 257 32 257 6
P.H.O.L. - Peterborough 197 45 51 0 1 0 1 0 51 10 31 0 0 0 0 0 31 0 31 2 31 2 31 3
St. Joseph's - Hamilton 3208 474 1659 0 0 25 25 0 1659 108 1659 0 0 47 0 0 1659 14 1659 25 1659 70 0 0
Sault Area Hospital 377 42 377 0 4 1 5 0 377 7 44 3 0 5 1 0 44 0 44 1 44 4 44 6
Province of Ontario 19452 2996 9533 15 64 63 125 8 9533 676 6446 4 0 53 1 124 6446 72 6464 116 6464 262 4805 175
Manitoba 1834 208 1499 1 3 25 29 0 1499 131 127 0 0 2 0 0 127 3 157 9 127 9 157 20
Saskatchewan 5352 271 1382 0 0 21 21 0 1100 159 545 3 0 19 0 0 545 20 545 31 545 29 545 18
Alberta 6645 971 4385 24 23 41 88 1 3902 605 1559 6 2 32 5 0 1557 15 1553 58 1538 67 1559 22
Prairies 13831 1450 7266 25 26 87 138 1 6501 895 2231 9 2 53 5 0 2229 38 2255 98 2210 105 2261 60
British Columbia 5692 736 4491 7 16 0 99 1 3640 543 746 0 1 38 13 0 746 23 746 22 714 53 714 55
Yukon 128 7 45 0 1 0 5 0 45 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.
Northwest Territories N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 0 0 N.C. N.C.
Nunavut 153 18 67 0 0 0 0 0 67 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 281 25 112 0 1 0 5 0 112 3 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 0 0 N.C. N.C.
CANADA 71421 9575 34515 47 116 553 779 19 29079 2671 10759 14 5 178 20 124 10766 201 10804 273 9914 455 9117 370

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 14, 2023 (surveillance weeks 2022-35 to 2023-02)
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 11810 2481 6657 1 246 661 908 0 6657 232 6657 4 29 48 16 0 6657 135 6657 244 6657 540 6657 233
Prince Edward Island 23723 5921 2049 1 117 234 352 0 2049 147 946 15 25 72 6 0 946 56 946 11 946 301 946 24
Nova Scotia 91895 18279 23006 0 4 3571 3575 1 23005 1716 806 4 16 21 2 0 805 34 795 2 805 161 805 19
New Brunswick 79543 11398 28460 2 128 4390 4520 4 22093 1312 2023 3 19 112 7 0 2023 147 2023 38 2023 389 1968 135
Atlantic 206971 38079 60172 4 495 8856 9355 5 53804 3407 10432 26 89 253 31 0 10431 372 10421 295 10431 1391 10376 411
Région Nord-Est 58030 8025 27994 0 2 3472 3474 8 9690 962 728 7 3 45 0 0 728 37 721 45 N.C. N.C. 728 36
Québec-Chaudière-Appalaches 127090 12718 15328 0 0 2731 2731 10 15057 1581 4275 20 5 39 0 0 4521 285 4275 212 N.C. N.C. 4275 179
Centre-du-Québec 100600 14496 10522 0 0 1721 1721 13 9163 809 549 13 0 23 2 0 549 44 549 56 N.C. N.C. 549 25
Montréal-Laval 139944 18697 52491 0 9 5799 5808 67 29537 2149 13192 121 13 224 10 0 13201 521 13293 599 N.C. N.C. 12877 362
Ouest du Québec 77214 10777 12677 0 7 2122 2129 7 10783 954 680 20 0 51 1 0 679 127 680 39 N.C. N.C. 681 26
Montérégie 99583 11894 13508 0 0 1597 1597 11 12931 903 80 0 0 2 0 0 80 1 80 4 N.C. N.C. 80 1
Province of Québec 602461 76607 132520 0 18 17442 17460 116 87161 7358 19504 181 21 384 13 0 19758 1015 19598 955 N.C. N.C. 19190 629
P.H.O.L. - Ottawa 20809 5316 2769 5 131 62 193 0 2769 213 2042 0 0 0 0 50 2042 6 2042 27 2042 132 2042 54
EORLA 59339 6423 9799 0 0 1365 1365 3 9799 1128 786 8 3 31 16 0 786 40 786 25 786 184 786 53
P.H.O.L. - Kingston 21033 3514 1630 2 88 38 128 1 1629 122 1392 0 0 0 0 65 1393 20 1393 22 1392 158 1393 52
UHN / Mount Sinai Hospital 63396 5148 12441 4 43 328 375 14 12441 203 732 0 0 4 0 0 699 1 732 0 732 23 732 36
P.H.O.L. - Toronto 40560 8584 15623 66 2367 140 1074 1 15594 917 13558 0 0 0 0 571 13561 194 13558 159 13558 1016 13558 538
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 53030 4010 53033 56 1433 713 2202 19 53032 1865 30296 4 0 16 0 363 30309 259 30435 165 30383 759 30277 540
P.H.O.L. - Sault Ste. Marie 1281 245 359 1 52 14 57 0 359 3 307 0 0 0 0 30 307 0 307 20 307 10 307 5
P.H.O.L. - Timmins 6575 729 672 0 161 6 156 0 671 49 650 0 0 0 0 40 650 11 650 10 650 47 650 24
St. Joseph's - London 85651 11311 9503 0 0 861 861 11 9503 818 1127 0 0 0 0 44 1161 38 1161 6 1161 172 749 59
P.H.O.L. - London 25315 5477 6016 8 579 60 630 3 6015 621 5149 0 0 0 0 277 5150 66 5150 32 5149 362 5150 198
P.H.O.L. - Orillia 413 216 1611 6 260 23 289 0 1611 205 1552 0 0 0 0 106 1552 30 1552 32 1552 188 1552 82
P.H.O.L. - Thunder Bay 6478 1390 645 0 106 3 109 0 644 57 566 0 0 0 0 25 566 15 566 6 566 42 566 14
P.H.O.L. - Sudbury 1578 243 486 1 65 14 67 0 486 40 397 0 0 0 0 19 397 5 397 11 397 23 397 20
P.H.O.L. - Hamilton 18889 4933 5148 5 297 90 392 4 5145 415 3760 0 0 0 0 159 3762 42 3760 38 3760 303 3760 155
P.H.O.L. - Peterborough 3149 575 766 0 64 9 73 0 766 79 667 0 0 0 0 25 667 7 667 18 667 96 667 26
St. Joseph's - Hamilton 60980 9558 24992 0 0 2653 2653 8 24992 2026 24992 0 0 716 0 0 24992 214 24992 139 24992 1703 0 0
Sault Area Hospital 9374 1575 6087 1 259 253 513 0 6087 55 1765 33 0 42 2 0 1765 35 1765 85 1765 186 1765 32
Province of Ontario 477850 69247 151580 155 5905 6632 11137 64 151543 8816 89738 45 3 809 18 1774 89759 983 89913 795 89859 5404 64351 1888
Manitoba 45471 8593 21435 16 195 1729 1940 0 21435 1137 3409 2 4 125 6 0 3399 105 3493 141 3409 552 3493 127
Saskatchewan 118030 10025 25524 0 0 3852 3852 8 19294 1153 8456 28 37 393 8 0 8459 193 8461 453 8459 736 8456 323
Alberta 156410 26098 74016 815 7240 2638 10693 19 63242 5494 26014 139 60 526 29 0 26004 302 25974 520 25587 2323 26014 816
Prairies 319911 44716 120975 831 7435 8219 16485 27 103971 7784 37879 169 101 1044 43 0 37862 600 37928 1114 37455 3611 37963 1266
British Columbia 167557 16448 76479 314 4299 290 8610 42 70405 5167 16236 137 158 580 116 6 16224 344 16224 331 15763 2402 15760 596
Yukon 3792 263 487 0 132 0 140 0 484 12 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 939 126 861 2 114 0 116 0 861 33 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 861 210 N.C. N.C.
Nunavut 2932 281 1502 3 230 3 236 0 1502 36 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 7663 670 2850 5 476 3 492 0 2847 81 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 861 210 N.C. N.C.
CANADA 1782413 245767 544576 1309 18628 41442 63539 254 469731 32613 173789 558 372 3070 221 1780 174034 3314 174084 3490 154369 13018 147640 4790

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 0.17 0.04 0.00 1.60 0.11 0.68 0.02 0.00 0.02 0.28 0.00 0.13 1.15 4.43 0.02 1.34 0.38 0.60
36 2022-09-10 13.06 0.14 0.01 0.00 2.11 0.23 0.98 0.04 0.00 0.00 0.55 0.00 0.15 1.13 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 13.59 0.49 0.00 0.02 2.15 0.43 1.16 0.02 0.00 0.00 0.21 0.00 0.14 1.41 7.16 0.10 1.24 0.37 0.64
39 2022-10-01 14.43 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 15.04 0.99 0.00 0.00 2.17 1.01 1.58 0.03 0.02 0.00 0.20 0.05 0.11 2.45 8.53 0.07 1.39 0.34 0.67
41 2022-10-15 16.56 1.44 0.03 0.01 2.66 1.05 1.57 0.01 0.03 0.00 0.36 0.03 0.16 3.54 9.54 0.10 1.74 0.58 0.98
42 2022-10-22 15.36 2.40 0.03 0.00 2.96 0.77 1.92 0.05 0.02 0.00 0.45 0.05 0.25 4.58 8.18 0.07 2.11 0.63 1.14
43 2022-10-29 15.75 5.57 0.03 0.01 5.23 0.68 2.60 0.03 0.02 0.00 0.55 0.06 0.23 6.63 8.11 0.07 2.16 0.55 1.32
44 2022-11-05 13.88 10.90 0.10 0.04 8.42 1.08 3.39 0.03 0.10 0.03 0.71 0.12 0.31 7.71 7.82 0.05 3.35 0.83 1.92
45 2022-11-12 12.38 15.98 0.07 0.02 9.83 1.18 4.19 0.04 0.06 0.02 0.97 0.22 0.44 7.65 7.03 0.04 4.43 1.29 2.59
46 2022-11-19 11.92 19.81 0.10 0.03 13.95 1.42 5.47 0.05 0.06 0.01 1.49 0.09 0.58 7.61 7.18 0.06 6.33 1.38 3.29
47 2022-11-26 11.74 23.74 0.13 0.03 15.24 1.25 6.91 0.04 0.07 0.04 2.13 0.13 0.80 6.71 8.10 0.03 8.69 1.79 4.46
48 2022-12-03 12.11 23.64 0.19 0.04 18.07 0.76 9.40 0.03 0.15 0.01 3.18 0.08 1.20 6.99 8.92 0.02 9.47 3.11 5.72
49 2022-12-10 12.59 21.48 0.23 0.03 19.52 1.43 11.41 0.06 0.05 0.01 4.21 0.19 1.60 7.28 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 14.16 12.48 0.18 0.00 28.53 2.27 16.81 0.05 0.02 0.01 10.44 0.19 3.30 9.27 8.97 0.07 15.23 6.52 9.27
52 2022-12-31 15.62 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 4.58 0.08 0.00 30.93 4.58 19.55 0.07 0.00 0.00 10.34 0.22 3.86 10.42 5.26 0.04 15.62 7.12 10.17
2 2023-01-14 13.41 2.26 0.11 0.00 26.80 5.46 19.10 0.06 0.01 0.00 11.01 0.29 3.91 9.19 4.32 0.07 14.05 6.60 9.63
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 22.87 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 1.57 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 6.94 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 3.64 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 4.75 16.64 7.94 16.72 12.69 13.83 3.05 5.78 0.02 6.14 3.03 4.18 1.88 1.89 0.35 3.34 1.66 2.48 1.86 1.48 0.02 1.94 0.31 1.08 3.95 4.94 0.02 4.30 1.00 2.04
49 2022-12-10 4.14 14.57 6.21 16.32 10.72 13.07 3.07 3.97 0.00 5.65 2.94 4.19 1.70 2.48 0.54 3.03 1.84 2.49 1.91 1.22 0.05 2.80 0.49 1.46 4.46 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 4.48 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 4.18 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 4.59 3.98 5.18 9.55 4.31 6.79 3.17 1.19 0.08 4.12 2.46 3.05 1.87 1.13 0.82 2.15 0.87 1.37 2.53 0.38 0.03 4.76 0.42 2.66 4.06 7.46 0.16 7.89 2.84 5.44

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 95303 13.40 10317 23.39 26519 12.26 28978 12.71 14405 16.06 14523 7.27 561 9.27
36 2022-09-10 87999 13.06 9220 22.81 25637 12.40 25742 12.04 13362 15.37 13642 7.44 396 10.86
37 2022-09-17 94358 12.73 9788 18.93 26091 12.17 28069 12.72 14236 16.17 15727 6.70 447 13.20
38 2022-09-24 96263 13.59 9345 24.14 26931 13.36 28977 12.35 15018 16.73 15532 6.99 460 10.43
39 2022-10-01 92662 14.43 8311 23.17 29662 13.22 27909 13.57 14871 17.48 11511 9.65 398 7.79
40 2022-10-08 95437 15.04 11290 20.91 31745 13.44 30640 14.46 14741 16.41 6525 13.01 496 6.05
41 2022-10-15 93065 16.56 9618 27.02 32473 13.37 28633 17.02 15414 17.56 6458 13.35 469 5.76
42 2022-10-22 95235 15.36 11962 20.72 32792 12.10 26742 17.29 16859 16.63 6521 11.13 359 7.24
43 2022-10-29 94724 15.75 9563 21.97 33446 11.75 25142 19.65 20163 16.20 5991 10.82 419 8.11
44 2022-11-05 89743 13.88 8906 17.97 32692 11.30 23508 16.57 17671 15.09 6497 8.56 469 8.74
45 2022-11-12 89589 12.38 10513 14.36 31704 10.58 22024 13.83 18318 13.66 6651 9.76 379 6.86
46 2022-11-19 90434 11.92 10650 13.65 30751 11.13 21425 12.63 20613 12.23 6640 9.79 355 7.61
47 2022-11-26 93854 11.74 11661 13.65 33538 11.43 20744 11.77 20318 11.63 7236 10.50 357 8.68
48 2022-12-03 94394 12.11 12354 13.22 35546 12.94 20852 11.38 18471 11.52 6818 9.78 353 7.65
49 2022-12-10 93704 12.59 13445 13.82 34896 13.36 21214 12.29 16549 10.67 7196 12.26 404 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 78839 14.16 10225 15.87 30937 14.58 18610 15.78 13249 10.30 5579 12.56 239 10.04
52 2022-12-31 69864 15.62 8458 19.43 25554 15.29 18079 17.14 11699 11.99 5877 14.45 197 7.11
1 2023-01-07 75143 15.09 9934 18.10 24747 13.67 20785 17.96 13420 11.46 5974 14.16 283 13.78
2 2023-01-14 71421 13.41 9630 17.07 22535 12.09 19452 15.40 13831 10.48 5692 12.93 281 8.90

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 12693 0.17 0.02 932 0.11 0.11 2404 0.17 0.04 4663 0.11 0.00 2573 0.31 0.04 2006 0.20 0.00 115 0.00 0.00
36 2022-09-10 12544 0.14 0.04 906 0.00 0.00 2520 0.12 0.00 4411 0.16 0.02 2566 0.16 0.08 2055 0.19 0.10 86 0.00 0.00
37 2022-09-17 13440 0.24 0.01 854 0.12 0.00 2618 0.19 0.04 4801 0.31 0.02 2798 0.18 0.00 2247 0.22 0.00 122 0.82 0.00
38 2022-09-24 14421 0.49 0.02 788 0.13 0.00 2714 0.22 0.04 5515 0.38 0.00 3044 0.43 0.03 2226 1.21 0.04 134 1.49 0.00
39 2022-10-01 14841 0.68 0.03 688 0.29 0.15 2873 0.21 0.10 5624 0.66 0.02 3132 0.64 0.00 2411 1.33 0.00 113 3.54 0.00
40 2022-10-08 14485 0.99 0.03 818 0.24 0.00 2339 0.21 0.00 5676 1.02 0.05 3081 0.88 0.03 2430 1.85 0.00 141 4.26 0.00
41 2022-10-15 16215 1.44 0.01 776 1.68 0.00 3275 0.49 0.00 5761 1.89 0.00 3737 0.96 0.03 2540 1.85 0.00 126 10.32 0.00
42 2022-10-22 17731 2.40 0.05 1001 2.60 0.00 3608 0.86 0.03 6230 3.10 0.08 4006 2.15 0.02 2774 2.45 0.07 112 18.75 0.00
43 2022-10-29 18445 5.57 0.03 969 3.72 0.00 3821 1.41 0.08 6013 8.13 0.02 4456 7.05 0.00 3026 3.34 0.07 160 20.63 0.00
44 2022-11-05 21494 10.90 0.03 1209 8.02 0.00 4458 3.45 0.02 7006 11.28 0.04 5540 17.94 0.02 3111 8.07 0.06 170 33.53 0.00
45 2022-11-12 26572 15.98 0.04 2145 11.38 0.05 5731 7.47 0.07 8254 13.28 0.04 6772 27.82 0.03 3507 16.03 0.03 163 19.63 0.00
46 2022-11-19 32808 19.81 0.05 3433 14.54 0.00 6914 13.65 0.04 8727 14.32 0.07 8818 30.32 0.06 4741 23.52 0.04 175 10.29 0.00
47 2022-11-26 39766 23.74 0.04 5140 24.20 0.00 9252 22.84 0.06 9193 16.41 0.03 9734 29.45 0.01 6279 26.74 0.10 168 17.86 0.00
48 2022-12-03 43395 23.64 0.03 6393 27.94 0.02 12431 26.91 0.06 9930 16.05 0.02 9117 23.97 0.03 5334 24.07 0.00 190 33.16 0.00
49 2022-12-10 43589 21.48 0.06 7404 28.55 0.00 12591 25.07 0.14 10580 13.16 0.06 7441 20.51 0.03 5326 20.32 0.04 247 38.06 0.00
50 2022-12-17 44347 17.20 0.07 6554 23.25 0.00 13081 21.57 0.15 10525 10.56 0.02 8255 14.40 0.01 5731 16.18 0.10 201 27.36 0.00
51 2022-12-24 40138 12.48 0.05 5487 16.93 0.00 11742 17.27 0.09 9666 6.57 0.03 8000 9.65 0.01 5122 12.16 0.10 121 18.18 0.00
52 2022-12-31 38286 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 80 11.25 0.00
1 2023-01-07 39781 4.58 0.07 5460 4.93 0.00 10624 6.92 0.14 10122 3.03 0.08 8309 3.23 0.00 5152 4.54 0.12 114 7.89 0.00
2 2023-01-14 34515 2.26 0.06 4291 2.47 0.02 8822 3.47 0.09 9533 1.31 0.08 7266 1.90 0.01 4491 2.20 0.02 112 4.46 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 11509 1.15 832 1.44 1737 3.51 4663 0.54 2367 0.68 1795 0.50 115 7.83
36 2022-09-10 11349 1.13 785 0.64 1737 2.71 4411 1.00 2415 0.54 1915 0.73 86 5.81
37 2022-09-17 12232 1.05 721 0.97 1851 3.51 4801 0.60 2610 0.61 2127 0.38 122 2.46
38 2022-09-24 13235 1.41 707 1.13 1908 5.56 5515 0.98 2821 0.35 2150 0.33 134 1.49
39 2022-10-01 13527 2.11 556 3.06 2029 7.69 5623 1.35 2894 0.73 2312 0.65 113 0.88
40 2022-10-08 13246 2.45 677 2.95 1727 8.92 5675 1.92 2707 0.63 2319 0.95 141 2.13
41 2022-10-15 14245 3.54 695 3.45 2330 11.12 5761 2.46 3049 1.38 2284 1.53 126 1.59
42 2022-10-22 15688 4.58 799 3.38 2644 13.09 6230 3.60 3352 2.21 2551 1.72 112 3.57
43 2022-10-29 16163 6.63 929 4.20 2751 17.52 6010 6.09 3634 2.67 2680 3.10 159 3.14
44 2022-11-05 18740 7.71 964 6.64 3126 20.15 7006 7.09 4483 3.37 2993 3.31 168 1.79
45 2022-11-12 23114 7.65 1867 9.16 3986 16.88 8242 7.01 5466 3.64 3390 4.25 163 1.84
46 2022-11-19 26999 7.61 2538 6.82 4620 14.11 8721 7.41 6904 4.88 4041 5.99 175 2.86
47 2022-11-26 34079 6.71 4680 6.24 6170 9.98 9192 6.80 7726 5.14 6143 5.73 168 2.98
48 2022-12-03 36841 6.99 6110 5.35 8002 7.91 9926 6.85 7522 6.90 5091 8.15 190 1.58
49 2022-12-10 36861 7.28 6227 5.77 8179 6.32 10579 7.61 6303 8.52 5326 8.60 247 2.83
50 2022-12-17 37736 8.71 5921 6.67 8545 5.36 10522 8.33 7131 13.06 5416 11.48 201 2.49
51 2022-12-24 34257 9.27 4905 6.81 7661 5.33 9664 8.14 7106 13.68 4800 13.96 121 4.96
52 2022-12-31 32886 10.69 4669 7.90 6616 6.48 9370 8.19 7032 16.74 5119 15.06 80 5.00
1 2023-01-07 33359 10.42 5144 8.98 6300 6.48 10120 7.99 7534 15.97 4147 14.23 114 2.63
2 2023-01-14 29079 9.19 4078 7.41 5215 4.83 9533 7.09 6501 13.77 3640 14.92 112 2.68

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 8428 4.41 441 3.40 944 4.45 4632 3.52 1571 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 11672 3.97 575 5.91 1243 3.06 5943 3.30 2973 3.87 937 8.54
47 2022-11-26 12288 3.64 677 5.91 1319 3.64 5937 3.17 2644 2.91 1710 5.50
48 2022-12-03 12348 3.05 808 3.71 1437 1.88 6343 2.70 2804 3.50 956 5.23
49 2022-12-10 12271 3.07 962 3.64 1406 1.99 6469 2.43 2439 3.81 995 6.43
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 11996 3.63 802 3.12 1017 3.24 6864 2.93 2349 4.09 964 8.30
2 2023-01-14 10759 3.17 526 3.80 810 2.22 6446 2.82 2231 3.09 746 6.97

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 8440 1.79 441 2.04 955 5.76 4633 1.01 1571 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 11696 1.87 575 4.35 1265 4.66 5946 1.19 2972 1.38 937 2.45
47 2022-11-26 12291 1.89 677 3.99 1333 5.85 5937 0.94 2633 1.52 1710 1.81
48 2022-12-03 12343 1.88 808 4.33 1453 5.09 6343 1.04 2783 1.40 956 1.88
49 2022-12-10 12262 1.70 962 2.81 1417 4.59 6469 1.07 2419 1.03 995 2.21
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 12008 1.88 802 3.74 1027 6.52 6866 1.12 2349 1.45 964 1.87
2 2023-01-14 10766 1.87 526 3.42 819 6.11 6446 1.12 2229 1.70 746 3.08

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 1.57 354 0.85 911 6.70 3865 0.52 1440 1.53 707 1.13
43 2022-10-29 8449 1.78 441 1.81 960 6.35 4632 0.97 1576 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 11677 1.89 575 3.65 1247 6.58 5955 0.27 2962 2.87 937 1.81
47 2022-11-26 12282 1.78 677 2.22 1325 6.11 5951 0.55 2618 2.02 1710 2.16
48 2022-12-03 12372 1.86 808 3.22 1438 4.17 6359 0.64 2811 2.88 956 2.30
49 2022-12-10 12303 1.91 962 3.95 1407 3.55 6473 0.85 2466 2.88 995 2.11
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 12017 2.94 802 3.49 1018 3.24 6872 1.67 2361 5.89 964 3.94
2 2023-01-14 10804 2.53 526 3.04 813 2.58 6464 1.79 2255 4.35 746 2.95

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 4149 22.87 286 27.62 - - 2001 19.94 1309 22.23 521 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 7495 11.05 441 19.05 - - 4632 7.38 1554 13.96 814 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 10428 6.94 575 18.43 - - 5952 4.96 2945 6.25 904 14.49
47 2022-11-26 10987 4.88 677 9.75 - - 5927 3.36 2619 4.39 1678 8.70
48 2022-12-03 10945 4.75 808 9.78 - - 6359 3.21 2774 4.83 931 10.20
49 2022-12-10 10971 4.14 962 7.59 - - 6473 2.90 2425 3.84 995 9.25
50 2022-12-17 11052 4.58 987 8.81 - - 6726 3.20 2213 4.84 1038 8.67
51 2022-12-24 10516 4.49 783 5.75 - - 6652 3.77 2125 4.89 956 7.53
52 2022-12-31 9987 4.48 638 6.11 - - 6330 3.95 2047 5.23 972 5.25
1 2023-01-07 10946 4.18 802 3.12 - - 6873 4.13 2334 4.33 937 5.02
2 2023-01-14 9914 4.59 526 6.65 - - 6464 4.05 2210 4.75 714 7.42

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 7154 1.86 386 0.78 922 0.65 3451 1.45 1580 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 10077 3.54 575 2.61 1193 3.52 4433 2.96 2971 5.02 904 2.21
47 2022-11-26 10691 3.24 677 2.66 1290 3.80 4433 3.50 2612 3.83 1678 1.43
48 2022-12-03 10719 3.95 808 2.72 1379 5.29 4787 4.24 2814 3.13 931 3.97
49 2022-12-10 10684 4.46 962 4.89 1383 4.92 4874 4.21 2470 4.29 995 5.03
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 10142 4.40 802 10.97 1017 5.11 5026 2.94 2360 3.35 937 8.43
2 2023-01-14 9117 4.06 526 9.89 811 3.45 4805 3.64 2261 2.65 714 7.70

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