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Respiratory Virus Report, Week 21 - ending May 27, 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 21 (week ending May 27, 2023) in Canada, participating RVDSS laboratories reported 2,438 detections of SARS-CoV-2 from 26,751 tests (9.1% positive). Among non-SARS-CoV-2 respiratory viruses, where test volumes are lower (range of 4,615 to 16,241 tests), activity of all viruses is within or below expected levels.

  • Activity of influenza remains low at inter-seasonal levels. Both influenza A (86 detections; 0.5% positive) and influenza B (181 detections; 1.1% positive) are within expected levels typical of this time of year.
  • Activity of all other non-SARS-CoV-2 respiratory viruses is within or below 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 May 27, 2023 (surveillance week 2023-21)
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 399 39 265 0 0 2 2 0 265 6 265 1 1 4 16 0 265 5 265 2 265 20 265 30
Prince Edward Island 80 7 6 0 0 0 0 1 6 0 3 0 0 0 0 0 3 2 3 0 3 0 3 0
Nova Scotia 1175 200 670 0 0 1 1 0 670 4 20 0 0 1 0 0 23 3 23 0 23 8 23 1
New Brunswick 657 80 627 0 0 0 0 1 619 4 88 7 1 2 0 0 88 2 88 2 88 10 88 3
Atlantic 2311 326 1568 0 0 3 3 2 1560 14 376 8 2 7 16 0 379 12 379 4 379 38 379 34
Région Nord-Est 1280 125 996 0 0 17 17 4 200 1 42 1 0 0 0 0 42 1 42 1 N.C. N.C. 42 1
Québec-Chaudière-Appalaches 1627 113 383 0 0 4 4 8 383 4 155 0 0 0 0 0 187 18 155 4 N.C. N.C. 155 0
Centre-du-Québec 1877 172 198 0 0 1 1 4 195 2 31 0 0 1 1 0 31 6 31 0 N.C. N.C. 31 0
Montréal-Laval 2687 214 2066 0 0 7 7 40 1110 9 455 0 0 14 6 0 455 20 456 9 N.C. N.C. 455 4
Ouest du Québec 1192 110 328 0 0 2 2 14 328 1 25 0 0 1 0 0 25 4 25 0 N.C. N.C. 25 0
Montérégie 1491 148 925 0 0 1 1 8 777 3 4 0 0 0 0 0 4 0 4 0 N.C. N.C. 4 0
Province of Québec 10154 882 4896 0 0 32 32 78 2993 20 712 1 0 16 7 0 744 49 713 14 N.C. N.C. 712 5
P.H.O.L. - Ottawa 242 93 96 0 0 0 0 0 96 0 57 0 0 0 0 3 57 0 57 0 57 12 57 3
EORLA 717 42 230 0 0 0 0 0 230 0 24 0 0 0 0 0 24 0 24 1 24 6 24 1
P.H.O.L. - Kingston 329 33 84 0 0 0 0 0 84 0 36 0 0 0 0 2 36 0 36 0 36 5 36 1
UHN / Mount Sinai Hospital 998 60 530 0 0 0 0 1 530 0 12 0 0 0 0 0 12 0 12 0 12 0 12 0
P.H.O.L. - Toronto 401 66 481 1 0 1 2 6 479 3 430 0 0 0 0 28 430 19 430 13 430 58 430 13
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 997 58 996 4 0 0 4 20 996 0 992 0 0 0 0 20 992 11 998 7 998 48 998 6
P.H.O.L. - Sault Ste. Marie 23 2 12 0 0 0 0 0 12 0 4 0 0 0 0 0 4 0 4 0 4 3 4 0
P.H.O.L. - Timmins 63 10 22 0 0 0 0 0 22 0 14 0 0 0 0 1 14 0 14 0 14 0 14 2
St. Joseph's - London 832 58 103 0 0 0 0 0 103 0 46 0 0 0 0 4 46 2 46 0 46 8 46 1
P.H.O.L. - London 290 40 152 0 0 0 0 1 152 0 133 0 0 0 0 11 133 5 133 6 133 7 133 5
P.H.O.L. - Orillia 3 0 28 0 0 0 0 2 28 0 28 0 0 0 0 5 28 4 28 1 28 5 28 2
P.H.O.L. - Thunder Bay 39 0 5 0 0 0 0 0 5 0 5 0 0 0 0 0 5 0 5 0 5 0 5 0
P.H.O.L. - Sudbury 14 0 4 0 0 0 0 0 4 0 4 0 0 0 0 0 4 0 4 0 4 2 4 0
P.H.O.L. - Hamilton 149 52 121 1 1 0 2 1 121 1 119 0 0 0 0 10 119 6 119 6 119 11 119 2
P.H.O.L. - Peterborough 40 3 67 1 0 0 1 3 67 0 67 0 0 0 0 3 67 6 67 3 67 22 67 0
St. Joseph's - Hamilton 1343 77 1100 0 0 2 2 19 1100 5 1100 0 0 17 0 0 1100 22 1100 7 1100 77 0 0
Sault Area Hospital 86 7 86 0 0 0 0 0 86 2 59 0 0 2 0 0 59 1 59 0 59 13 59 0
Province of Ontario 6566 601 4117 7 1 3 11 53 4115 11 3130 0 0 19 0 87 3130 76 3136 44 3136 277 2036 36
Manitoba 1083 101 868 0 0 3 3 1 868 1 87 6 2 0 1 0 87 1 103 1 87 16 103 1
Saskatchewan 1398 74 528 0 0 9 9 2 492 0 191 10 5 2 6 0 191 7 190 1 191 40 191 3
Alberta 2565 167 2246 12 0 2 14 28 2170 3 734 7 6 5 1 0 734 15 734 0 734 73 734 11
Prairies 5046 342 3642 12 0 14 26 31 3530 4 1012 23 13 7 8 0 1012 23 1027 2 1012 129 1028 15
British Columbia 2481 275 1894 7 0 0 14 8 1890 5 481 14 1 12 8 0 481 29 481 16 460 72 460 7
Yukon 57 7 16 0 0 0 0 0 16 0 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C.
Northwest Territories 15 3 13 0 0 0 0 0 13 3 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 13 4 N.C. N.C.
Nunavut 121 2 95 0 0 0 0 9 95 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 193 12 124 0 0 0 0 9 124 5 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 13 4 N.C. N.C.
CANADA 26751 2438 16241 26 1 52 86 181 14212 59 5711 46 16 61 39 87 5746 189 5736 80 5000 520 4615 97

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 May 27, 2023 (surveillance weeks 2022-35 to 2023-21)
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 21685 3818 12553 8 246 674 928 9 12553 593 12553 58 31 376 95 0 12553 241 12553 377 12553 1062 12553 499
Prince Edward Island 33058 7262 4021 1 119 248 368 4 4021 384 1146 19 27 78 7 0 1146 74 1146 37 1146 338 1146 35
Nova Scotia 130647 25635 42378 0 4 3644 3648 13 42368 2413 1333 7 16 32 4 0 1342 54 1332 44 1342 252 1342 59
New Brunswick 106988 15748 48939 23 133 4433 4589 28 40913 2051 3690 28 31 161 8 0 3690 260 3690 181 3690 669 3635 232
Atlantic 292378 52463 107891 32 502 8999 9533 54 99855 5441 18722 112 105 647 114 0 18731 629 18721 639 18731 2321 18676 825
Région Nord-Est 93222 11320 55120 0 4 3870 3874 75 16530 1379 1633 29 5 89 0 0 1634 134 1625 97 N.C. N.C. 1634 112
Québec-Chaudière-Appalaches 191649 18136 26329 0 0 2900 2900 160 25639 1927 7544 25 5 92 6 0 8105 666 7544 349 N.C. N.C. 7544 339
Centre-du-Québec 156954 21390 16107 0 0 1782 1782 101 14357 991 1075 13 1 52 11 0 1075 125 1075 74 N.C. N.C. 1075 72
Montréal-Laval 214074 26247 104599 0 9 6261 6270 1500 56586 2747 22920 136 21 519 39 0 22929 1018 23074 804 N.C. N.C. 22605 781
Ouest du Québec 117662 15049 24167 0 7 2199 2206 181 21870 1322 1083 21 0 67 3 0 1082 197 1083 60 N.C. N.C. 1084 63
Montérégie 149447 16886 31428 0 0 1799 1799 240 28334 1201 158 0 0 2 0 0 158 4 158 6 N.C. N.C. 158 5
Province of Québec 923008 109028 257750 0 20 18811 18831 2257 163316 9567 34413 224 32 821 59 0 34983 2144 34559 1390 N.C. N.C. 34100 1372
P.H.O.L. - Ottawa 29261 7390 5793 18 136 66 214 2 5793 355 4058 0 0 0 0 123 4058 18 4058 115 4058 382 4058 206
EORLA 90118 8719 16819 0 0 1414 1414 45 16819 1297 1356 11 4 56 17 0 1356 51 1356 61 1356 301 1356 98
P.H.O.L. - Kingston 30728 4941 3178 5 92 38 135 3 3177 180 2525 0 0 0 0 115 2526 28 2526 81 2525 319 2526 100
UHN / Mount Sinai Hospital 98254 7461 24092 7 44 352 403 55 24092 319 2146 2 2 34 2 0 2113 7 2146 15 2146 72 2146 87
P.H.O.L. - Toronto 52375 11070 29418 132 2415 151 1144 56 29386 1348 26016 0 0 0 0 1062 26020 531 26015 1013 26016 2496 26015 1292
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 87153 6114 87153 125 1471 727 2323 339 87154 2213 64435 4 0 16 0 735 64448 657 64726 946 64674 2250 64566 1030
P.H.O.L. - Sault Ste. Marie 1838 346 707 1 52 15 58 0 707 25 617 0 0 0 0 54 617 4 617 30 617 47 617 44
P.H.O.L. - Timmins 9312 893 1073 0 161 6 156 0 1071 98 997 0 0 0 0 55 997 14 997 28 997 84 997 46
St. Joseph's - London 124734 15211 21037 0 0 886 886 69 21037 1016 2256 0 0 0 0 85 2290 76 2290 68 2290 332 1878 106
P.H.O.L. - London 37960 8022 11568 13 585 63 643 25 11567 888 9296 0 0 0 0 463 9297 131 9297 241 9296 910 9297 316
P.H.O.L. - Orillia 580 264 2401 6 261 23 290 12 2401 230 2326 0 0 0 0 134 2327 70 2326 79 2326 343 2326 106
P.H.O.L. - Thunder Bay 8589 1717 1094 0 107 3 110 0 1093 96 969 0 0 0 0 38 969 18 969 28 969 113 970 38
P.H.O.L. - Sudbury 2123 302 807 1 65 14 67 0 807 79 686 0 0 0 0 30 686 8 686 45 686 41 686 25
P.H.O.L. - Hamilton 26239 6957 9637 17 302 92 409 36 9634 555 7156 0 0 0 0 292 7158 158 7156 255 7156 712 7156 290
P.H.O.L. - Peterborough 5368 1025 1596 1 67 11 79 15 1596 115 1300 0 0 0 0 50 1300 28 1300 47 1300 216 1300 46
St. Joseph's - Hamilton 100673 13645 50517 0 0 2739 2739 480 50517 2288 50517 0 0 1050 0 0 50517 723 50517 908 50517 3361 0 0
Sault Area Hospital 12525 2122 8441 1 262 258 521 7 8441 170 2821 35 7 72 4 0 2821 49 2821 100 2821 291 2821 80
Province of Ontario 717830 96199 275331 327 6020 6858 11591 1144 275292 11272 179477 52 13 1228 23 3236 179500 2571 179803 4060 179750 12270 128715 3910
Manitoba 72770 11887 43600 18 202 1800 2020 61 43600 1779 5533 45 37 173 7 0 5523 139 5858 219 5533 828 5858 217
Saskatchewan 168773 13665 42599 2 41 3956 3999 76 34482 2216 14238 128 106 529 59 0 14240 370 14240 661 14241 1540 14236 513
Alberta 238852 34030 134383 1040 7304 2844 11188 746 119258 7656 46820 360 126 944 144 0 46805 655 46758 1262 46065 4334 46820 1296
Prairies 480395 59582 220582 1060 7547 8600 17207 883 197340 11651 66591 533 269 1646 210 0 66568 1164 66856 2142 65839 6702 66914 2026
British Columbia 238245 25741 136863 417 4355 304 8935 305 128780 8235 29688 317 199 1115 183 6 29698 919 29698 1162 28766 4458 28763 1117
Yukon 5245 400 934 2 136 0 138 9 932 59 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 1661 192 1507 4 147 1 152 5 1507 110 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 1507 301 N.C. N.C.
Nunavut 5009 393 2858 4 230 3 237 219 2858 148 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 11915 985 5299 10 513 4 527 233 5297 317 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 1507 301 N.C. N.C.
CANADA 2663771 343998 1003716 1846 18957 43576 66624 4876 869880 46483 328891 1238 618 5457 589 3242 329480 7427 329637 9393 294593 26052 277168 9250

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 11.89 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 11.79 0.55 0.02 0.00 24.22 15.48 18.52 0.29 0.00 0.00 17.02 0.35 6.54 5.13 2.16 0.02 15.53 6.95 11.26
8 2023-02-25 11.74 0.57 0.06 0.00 28.62 12.42 18.53 0.50 0.02 0.00 16.79 0.45 6.60 4.54 2.12 0.05 15.47 6.64 10.63
9 2023-03-04 11.19 0.63 0.12 0.00 29.30 11.04 18.35 0.70 0.00 0.00 15.45 0.74 6.24 3.73 2.50 0.01 15.62 6.54 10.04
10 2023-03-11 11.43 0.62 0.16 0.00 29.65 8.51 16.81 0.78 0.00 0.00 14.86 0.81 6.41 2.82 3.10 0.00 14.97 6.35 9.37
11 2023-03-18 11.59 0.52 0.26 0.01 24.27 6.74 14.55 1.16 0.01 0.00 13.11 1.05 6.86 2.20 3.71 0.03 12.11 6.29 8.83
12 2023-03-25 11.29 0.60 0.86 0.00 20.91 5.51 12.67 1.29 0.00 0.00 11.53 1.51 7.43 1.97 3.79 0.07 10.70 6.46 8.12
13 2023-04-01 10.85 0.64 1.52 0.00 18.09 4.67 11.66 1.74 0.00 0.00 12.55 1.98 7.90 1.64 4.00 0.04 9.32 6.45 7.64
14 2023-04-08 10.92 0.38 2.48 0.00 17.83 3.21 9.98 1.85 0.01 0.00 13.12 2.12 7.88 1.34 4.05 0.08 8.09 5.32 6.44
15 2023-04-15 11.37 0.60 3.84 0.01 17.75 2.18 8.72 1.93 0.02 0.00 12.22 2.00 7.55 1.41 3.46 0.11 7.73 4.64 5.97
16 2023-04-22 10.94 0.51 6.98 0.00 13.67 2.13 6.80 1.85 0.01 0.00 11.94 2.56 7.68 1.31 2.97 0.23 6.64 4.40 5.40
17 2023-04-29 10.08 0.47 9.67 0.00 11.31 1.28 5.34 1.83 0.01 0.00 12.18 2.94 7.49 1.14 2.84 0.21 5.79 3.52 4.58
18 2023-05-06 9.85 0.50 11.28 0.00 8.05 0.89 3.95 1.81 0.01 0.00 10.20 2.62 6.31 0.86 2.34 0.27 4.86 2.78 3.62
19 2023-05-13 9.60 0.66 12.58 0.00 8.27 0.90 3.26 1.46 0.05 0.00 9.33 2.12 5.72 0.72 2.40 0.24 4.61 2.30 3.16
20 2023-05-20 9.31 0.77 10.28 0.00 6.42 0.56 2.33 1.29 0.07 0.01 7.59 1.12 4.89 0.61 2.52 0.18 4.46 1.59 2.66
21 2023-05-27 9.11 0.53 9.73 0.01 4.40 0.12 1.67 1.11 0.04 0.00 5.43 0.91 3.93 0.42 2.25 0.25 4.10 1.23 2.13
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 9.97 3.86 5.08 9.89 6.16 6.98 2.67 0.51 0.10 2.89 1.57 2.19 2.14 1.44 0.54 1.74 1.25 1.51 3.73 0.42 0.19 5.57 0.65 3.39 2.64 3.01 0.20 8.57 3.48 6.75
7 2023-02-18 9.87 4.46 5.56 8.95 6.00 7.02 2.63 0.44 0.00 3.20 1.42 2.12 2.31 1.52 0.49 1.61 1.30 1.51 4.41 0.44 0.14 6.05 1.45 3.94 3.14 3.24 0.13 8.02 4.35 6.54
8 2023-02-25 9.55 6.31 4.77 8.35 5.20 6.94 2.55 0.73 0.16 3.21 1.31 2.25 2.86 1.85 0.72 2.00 1.38 1.67 4.29 0.53 0.04 5.74 1.19 4.08 3.06 3.67 0.14 8.29 4.21 6.60
9 2023-03-04 9.77 7.80 5.48 9.04 5.73 7.75 3.06 0.60 0.07 3.35 1.41 2.44 2.75 1.90 0.86 1.92 1.09 1.40 4.72 0.40 0.11 6.42 1.87 4.38 3.41 3.32 0.36 8.01 5.09 6.86
10 2023-03-11 9.42 8.24 4.62 10.16 5.55 8.08 2.77 0.68 0.06 4.18 1.19 2.69 2.79 1.98 0.38 2.23 1.50 1.78 5.04 0.51 0.00 6.74 2.26 4.80 3.70 3.86 0.34 8.34 4.28 7.01
11 2023-03-18 8.77 8.97 4.08 9.45 7.15 8.24 3.48 0.66 0.19 4.58 1.35 3.00 2.39 1.88 0.63 2.32 1.23 1.69 5.07 0.59 0.11 7.94 2.52 4.71 3.70 3.25 0.33 8.02 4.35 6.23
12 2023-03-25 9.31 9.52 4.61 10.26 8.71 9.66 2.98 1.05 0.00 4.95 1.26 3.34 2.56 1.71 0.35 2.13 1.84 1.97 5.45 0.77 0.14 6.69 3.65 5.19 4.53 4.38 0.54 6.99 3.95 5.69
13 2023-04-01 8.35 8.49 4.86 12.58 7.69 10.26 3.17 1.39 0.18 5.21 1.48 3.68 2.51 2.30 0.35 2.12 1.37 1.70 4.79 1.28 0.07 6.90 3.95 5.18 4.04 4.45 0.30 8.16 3.65 5.46
14 2023-04-08 8.95 9.25 5.49 13.59 8.60 12.03 3.45 1.18 0.00 6.26 1.67 4.31 2.56 1.74 0.34 2.31 1.50 1.86 4.61 1.45 0.04 7.70 4.14 6.00 4.51 4.24 0.41 7.79 3.84 4.87
15 2023-04-15 9.16 9.14 8.23 14.59 9.44 13.16 3.83 1.35 0.12 6.94 1.97 4.61 3.04 1.71 0.98 2.62 1.64 2.12 4.09 1.52 0.04 7.47 3.81 5.94 3.56 4.97 1.07 5.52 3.23 4.24
16 2023-04-22 8.67 8.20 6.18 16.10 10.84 13.78 3.89 2.19 0.16 7.88 1.97 5.20 2.79 1.84 0.82 3.21 1.85 2.32 3.93 2.18 0.04 7.16 3.71 5.90 3.64 4.91 0.69 4.99 3.51 4.32
17 2023-04-29 9.88 7.74 7.23 18.29 13.64 16.16 4.07 1.78 0.61 8.67 2.07 6.01 2.63 1.37 0.35 2.54 1.70 2.10 3.53 2.40 0.04 6.58 4.68 5.64 4.36 4.91 0.96 4.11 2.54 3.37
18 2023-05-06 10.97 7.41 5.63 20.03 12.39 16.31 4.84 2.07 0.08 8.42 3.19 5.85 3.57 1.32 0.77 2.89 1.36 2.23 3.15 2.55 0.00 6.37 3.14 5.08 3.42 4.80 0.69 4.00 2.36 3.09
19 2023-05-13 11.03 8.36 7.40 21.71 15.70 19.30 4.09 2.71 0.21 9.09 3.67 5.95 2.96 1.52 0.98 2.63 1.66 2.07 2.51 3.63 0.04 7.46 3.23 4.80 3.46 4.37 0.86 3.71 1.58 2.36
20 2023-05-20 10.82 9.06 8.13 24.52 16.67 19.75 4.12 3.29 0.05 8.60 3.90 6.75 3.18 1.68 0.71 3.35 1.79 2.44 1.79 4.79 0.14 6.85 2.55 4.99 2.71 4.53 0.75 3.31 1.87 2.49
21 2023-05-27 10.40 10.26 6.36 25.86 16.41 21.07 4.36 3.47 0.25 9.56 6.00 7.27 3.29 1.95 1.05 3.51 1.41 2.39 1.39 5.69 0.10 6.80 3.22 4.63 2.10 3.64 1.17 2.37 1.10 1.74

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 56255 11.89 6104 18.18 19683 11.59 16025 12.38 10040 8.40 4144 10.71 259 9.65
7 2023-02-18 55033 11.79 5613 17.66 19596 11.17 15744 12.81 9694 8.32 4179 10.91 207 14.49
8 2023-02-25 52551 11.74 4878 18.63 19200 11.20 14836 12.15 9171 8.45 4259 11.86 207 13.53
9 2023-03-04 53644 11.19 5550 16.85 19339 10.82 15219 11.39 9232 8.77 4055 10.09 249 9.64
10 2023-03-11 51399 11.43 4959 18.33 18106 10.52 14995 11.34 8995 9.69 4122 11.28 222 10.81
11 2023-03-18 50826 11.59 4754 17.37 17765 10.26 15074 11.90 9191 10.14 3828 13.01 214 9.35
12 2023-03-25 48733 11.29 4607 16.21 16710 10.15 14209 10.89 9087 10.08 3939 14.78 181 7.73
13 2023-04-01 46607 10.85 4341 16.47 17132 9.38 13065 9.94 8216 10.22 3676 15.86 177 6.78
14 2023-04-08 40799 10.92 3595 15.35 15657 10.40 10310 9.28 7634 10.07 3408 15.76 195 5.64
15 2023-04-15 41872 11.37 3771 15.43 16447 10.52 10477 9.48 7269 10.55 3736 18.31 172 2.33
16 2023-04-22 40231 10.94 3412 13.25 16103 9.69 9788 9.28 7057 11.21 3660 18.63 211 4.27
17 2023-04-29 38134 10.08 2700 13.52 15387 9.25 9083 7.85 7102 9.48 3690 18.02 172 2.91
18 2023-05-06 35581 9.85 2743 14.69 14520 8.49 8229 8.48 6765 9.98 3123 15.63 201 3.48
19 2023-05-13 31622 9.60 2557 15.68 12892 8.32 7456 8.64 5733 9.14 2794 13.92 190 2.11
20 2023-05-20 29111 9.31 2463 15.63 11865 8.47 6935 8.51 5194 7.35 2498 13.53 156 5.77
21 2023-05-27 26751 9.11 2311 14.11 10154 8.69 6566 9.15 5046 6.78 2481 11.08 193 6.22

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 27982 0.68 0.34 3116 0.10 0.03 7619 1.00 0.45 7451 0.44 0.31 6138 1.06 0.39 3538 0.40 0.34 120 0.00 0.00
7 2023-02-18 26289 0.55 0.29 3068 0.10 0.00 6834 0.91 0.45 7239 0.23 0.18 5621 0.87 0.30 3444 0.41 0.41 83 0.00 0.00
8 2023-02-25 25449 0.57 0.50 2864 0.07 0.03 6409 1.09 0.94 7307 0.23 0.33 5236 0.67 0.44 3545 0.62 0.28 88 0.00 10.23
9 2023-03-04 26136 0.63 0.70 2917 0.31 0.07 6757 1.11 1.42 7347 0.37 0.48 5626 0.48 0.46 3373 0.77 0.53 116 0.00 4.31
10 2023-03-11 25805 0.62 0.78 2949 0.31 0.03 6864 1.18 1.35 7129 0.28 0.70 5349 0.41 0.60 3413 0.82 0.64 101 0.00 2.97
11 2023-03-18 25613 0.52 1.16 2824 0.35 0.14 6927 0.90 1.82 6957 0.34 0.86 5382 0.37 1.26 3416 0.53 0.94 107 0.00 5.61
12 2023-03-25 24111 0.60 1.29 2665 0.41 0.19 5617 1.46 2.39 7066 0.24 1.16 5198 0.33 1.00 3444 0.49 0.87 121 0.00 6.61
13 2023-04-01 24352 0.64 1.74 2435 0.45 0.21 6887 1.47 3.44 6826 0.38 1.35 4959 0.22 1.11 3126 0.22 0.61 119 0.00 12.61
14 2023-04-08 22978 0.38 1.85 2099 0.10 0.19 6354 0.76 3.12 6082 0.23 1.66 5198 0.21 1.48 3114 0.39 0.74 131 0.00 16.79
15 2023-04-15 23421 0.60 1.93 2175 0.18 0.23 6913 1.27 3.31 6142 0.33 1.73 4918 0.37 1.40 3156 0.32 0.44 117 0.00 24.79
16 2023-04-22 22666 0.51 1.85 1928 1.09 0.10 6585 0.80 2.99 5961 0.29 1.41 4720 0.38 1.33 3293 0.21 0.73 179 0.00 27.93
17 2023-04-29 21491 0.47 1.83 1771 0.28 0.17 6155 0.70 2.79 5560 0.11 1.67 4593 0.63 1.87 3292 0.52 0.30 120 0.83 25.00
18 2023-05-06 20579 0.50 1.81 1775 0.17 0.28 6066 0.45 2.75 5250 0.25 1.81 4638 1.08 1.64 2701 0.37 0.41 149 0.00 12.75
19 2023-05-13 18936 0.66 1.46 1679 0.30 0.24 5732 0.66 2.08 4563 0.35 1.47 4393 1.34 1.55 2436 0.29 0.25 133 0.00 9.77
20 2023-05-20 17524 0.77 1.29 1623 0.62 0.18 5277 0.95 1.80 4619 0.50 1.45 3909 1.13 1.13 2010 0.30 0.10 86 2.33 17.44
21 2023-05-27 16241 0.53 1.11 1568 0.19 0.13 4896 0.65 1.59 4117 0.27 1.29 3642 0.71 0.85 1894 0.74 0.42 124 0.00 7.26

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 24263 5.79 2953 7.42 4604 3.84 7451 3.21 5772 7.17 3363 10.20 120 10.83
7 2023-02-18 23026 5.13 2897 6.83 4209 3.64 7239 3.18 5299 6.30 3298 7.82 84 9.52
8 2023-02-25 22395 4.54 2721 6.43 4066 3.91 7307 2.29 4872 5.69 3341 6.76 88 14.77
9 2023-03-04 22965 3.73 2800 4.39 4224 3.10 7347 2.10 5274 4.29 3204 6.68 116 6.90
10 2023-03-11 22558 2.82 2843 3.13 4150 2.67 7130 1.40 5060 2.92 3274 5.19 101 18.81
11 2023-03-18 22373 2.20 2727 2.57 4216 2.21 6957 1.29 5084 1.89 3282 3.69 107 20.56
12 2023-03-25 21508 1.97 2598 2.27 3523 2.36 7065 1.13 4917 1.46 3284 3.53 121 11.57
13 2023-04-01 21203 1.64 2369 2.41 4251 1.88 6826 0.88 4693 1.26 2945 2.85 119 6.72
14 2023-04-08 20026 1.34 2088 1.92 3817 1.91 6082 0.64 4955 0.93 2953 1.79 131 12.98
15 2023-04-15 20156 1.41 2164 2.22 4170 1.77 6142 0.94 4653 0.84 2910 1.92 117 7.69
16 2023-04-22 19854 1.31 1942 2.57 4094 1.69 5961 0.57 4501 0.73 3177 1.89 179 7.82
17 2023-04-29 18839 1.14 1755 2.05 3925 1.91 5560 0.49 4353 0.62 3126 1.31 120 6.67
18 2023-05-06 18058 0.86 1771 1.92 3858 1.30 5250 0.50 4421 0.45 2609 0.65 149 6.04
19 2023-05-13 16607 0.72 1636 1.28 3609 1.08 4563 0.48 4232 0.28 2434 0.49 133 10.53
20 2023-05-20 15326 0.61 1617 1.11 3253 0.92 4619 0.54 3741 0.21 2010 0.40 86 5.81
21 2023-05-27 14212 0.42 1560 0.90 2993 0.67 4115 0.27 3530 0.11 1890 0.26 124 4.03

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 9047 2.67 420 5.95 816 3.19 5274 1.80 1767 3.00 770 5.58
7 2023-02-18 8811 2.63 449 4.45 860 3.72 5232 1.43 1542 4.54 728 4.81
8 2023-02-25 8628 2.55 421 5.70 795 2.77 5230 1.55 1481 3.65 701 5.56
9 2023-03-04 9020 3.06 421 9.03 788 4.44 5409 1.37 1641 5.42 761 5.26
10 2023-03-11 8553 2.77 472 9.53 766 3.13 5019 1.45 1542 3.18 754 6.10
11 2023-03-18 8476 3.48 428 10.51 764 4.32 4991 1.74 1525 5.11 768 6.77
12 2023-03-25 8626 2.98 456 9.87 641 2.65 5162 1.53 1633 4.72 734 5.31
13 2023-04-01 8443 3.17 467 7.92 789 3.80 5061 1.90 1484 4.11 642 6.85
14 2023-04-08 7692 3.45 399 9.27 731 3.28 4346 1.84 1517 5.01 699 6.87
15 2023-04-15 8023 3.83 482 9.13 825 4.00 4592 2.16 1446 6.09 678 6.34
16 2023-04-22 7629 3.89 450 7.11 821 3.90 4321 2.31 1385 6.21 652 7.21
17 2023-04-29 7257 4.07 443 8.13 802 4.11 4032 2.90 1289 4.81 691 6.80
18 2023-05-06 7234 4.84 390 7.69 806 3.85 4052 3.38 1352 7.10 634 8.83
19 2023-05-13 6623 4.09 342 4.68 802 4.36 3592 3.31 1288 5.12 599 5.84
20 2023-05-20 6356 4.12 367 5.72 723 4.84 3546 3.19 1084 3.78 636 8.18
21 2023-05-27 5711 4.36 376 8.78 712 3.37 3130 3.39 1012 5.04 481 7.28

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 9060 2.14 420 2.38 830 9.16 5274 1.14 1766 1.64 770 2.47
7 2023-02-18 8824 2.31 449 2.45 872 6.88 5233 1.55 1542 1.56 728 3.85
8 2023-02-25 8647 2.86 424 3.77 812 9.48 5230 1.91 1480 1.62 701 4.28
9 2023-03-04 9031 2.75 421 3.09 799 8.64 5409 1.85 1641 2.32 761 3.68
10 2023-03-11 8573 2.79 472 2.75 786 9.29 5019 1.61 1542 2.40 754 4.64
11 2023-03-18 8487 2.39 428 3.04 776 7.09 4991 1.62 1524 1.71 768 3.65
12 2023-03-25 8640 2.56 456 2.41 655 7.94 5162 1.72 1633 2.33 734 4.22
13 2023-04-01 8460 2.51 467 2.78 806 7.32 5061 1.70 1484 1.48 642 4.98
14 2023-04-08 7702 2.56 399 2.26 742 8.09 4346 1.56 1516 2.18 699 3.86
15 2023-04-15 8039 3.04 482 2.28 841 7.13 4592 2.05 1446 2.84 678 5.60
16 2023-04-22 7670 2.79 450 2.00 839 6.79 4322 2.22 1385 1.95 674 3.71
17 2023-04-29 7265 2.63 443 3.16 811 7.03 4032 1.69 1288 1.40 691 4.92
18 2023-05-06 7253 3.57 390 6.67 824 6.55 4052 2.59 1353 2.88 634 5.52
19 2023-05-13 6651 2.96 342 2.05 831 4.93 3592 2.67 1287 1.63 599 5.34
20 2023-05-20 6379 3.18 367 2.72 746 5.09 3546 2.59 1084 2.21 636 6.13
21 2023-05-27 5746 3.29 379 3.17 744 6.59 3130 2.43 1012 2.27 481 6.03

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 9062 3.73 420 5.48 817 3.67 5291 2.51 1764 5.27 770 7.66
7 2023-02-18 8821 4.41 449 9.58 861 3.25 5234 3.31 1549 5.62 728 7.97
8 2023-02-25 8642 4.29 424 5.90 797 2.13 5232 4.05 1488 4.44 701 7.28
9 2023-03-04 9019 4.72 421 5.94 791 2.53 5408 4.60 1638 4.82 761 6.96
10 2023-03-11 8563 5.04 472 5.93 768 3.13 5023 5.02 1546 3.69 754 9.42
11 2023-03-18 8505 5.07 428 7.24 770 3.64 4994 4.71 1545 4.40 768 8.98
12 2023-03-25 8649 5.45 456 5.04 643 3.58 5167 5.98 1649 4.00 734 6.81
13 2023-04-01 8462 4.79 467 3.00 794 3.53 5062 5.18 1497 3.34 642 7.94
14 2023-04-08 7722 4.61 399 3.01 732 3.96 4352 5.08 1540 2.60 699 7.73
15 2023-04-15 8035 4.09 482 3.32 828 2.90 4591 4.36 1456 2.68 678 7.37
16 2023-04-22 7677 3.93 450 4.89 825 1.82 4325 4.49 1403 2.42 674 5.49
17 2023-04-29 7276 3.53 443 3.84 804 2.36 4036 3.77 1302 2.23 691 5.79
18 2023-05-06 7265 3.15 390 1.28 810 2.10 4053 3.95 1378 1.45 634 4.26
19 2023-05-13 6646 2.51 342 2.05 804 3.73 3595 2.78 1306 0.31 599 4.34
20 2023-05-20 6367 1.79 367 0.27 727 2.20 3545 2.00 1092 0.46 636 3.30
21 2023-05-27 5736 1.39 379 1.06 713 1.96 3136 1.40 1027 0.19 481 3.33

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 N.A. N.A. 1179 10.18 947 16.79 394 15.48
36 2022-09-10 2817 16.22 280 21.79 N.A. N.A. 1089 11.20 1013 18.76 417 17.99
37 2022-09-17 3337 21.73 301 23.59 N.A. N.A. 1368 20.10 1101 20.62 522 24.33
38 2022-09-24 3847 23.50 334 22.16 N.A. N.A. 1689 22.20 1255 21.59 538 31.78
39 2022-10-01 4150 22.89 286 27.62 N.A. N.A. 2001 19.94 1310 22.29 521 31.67
40 2022-10-08 4488 19.32 298 20.47 N.A. N.A. 2235 15.84 1365 19.85 546 29.67
41 2022-10-15 5161 16.70 265 24.91 N.A. N.A. 2963 11.51 1305 20.15 579 28.67
42 2022-10-22 6332 12.95 354 21.47 N.A. N.A. 3863 7.77 1389 18.14 678 26.40
43 2022-10-29 7496 11.05 441 19.05 N.A. N.A. 4632 7.38 1555 13.95 814 20.64
44 2022-11-05 8272 10.23 362 23.20 N.A. N.A. 5245 6.43 1827 12.10 796 24.37
45 2022-11-12 9526 7.77 458 19.87 N.A. N.A. 5837 4.99 2415 7.99 759 19.89
46 2022-11-19 10427 6.93 575 18.43 N.A. N.A. 5952 4.96 2945 6.25 904 14.49
47 2022-11-26 10986 4.88 677 9.75 N.A. N.A. 5927 3.36 2619 4.39 1678 8.70
48 2022-12-03 10959 4.74 808 9.78 N.A. N.A. 6360 3.21 2787 4.81 931 10.20
49 2022-12-10 11309 4.09 962 7.59 N.A. N.A. 6474 2.90 2693 3.64 1064 8.93
50 2022-12-17 11052 4.58 987 8.81 N.A. N.A. 6726 3.20 2213 4.84 1038 8.67
51 2022-12-24 10580 4.49 783 5.75 N.A. N.A. 6652 3.77 2125 4.89 956 7.53
52 2022-12-31 10049 4.50 638 6.11 N.A. N.A. 6330 3.95 2047 5.23 972 5.25
1 2023-01-07 10998 4.19 802 3.12 N.A. N.A. 6872 4.13 2336 4.32 937 5.02
2 2023-01-14 10199 4.71 526 6.65 N.A. N.A. 6464 4.05 2327 4.86 832 7.81
3 2023-01-21 9133 6.68 502 7.57 N.A. N.A. 5849 5.85 1945 5.86 807 13.88
4 2023-01-28 8568 8.22 413 11.14 N.A. N.A. 5631 6.68 1747 8.70 754 16.84
5 2023-02-04 8581 8.94 596 11.07 N.A. N.A. 5367 7.60 1827 8.65 764 17.15
6 2023-02-11 8243 9.97 420 12.62 N.A. N.A. 5291 8.20 1748 10.30 740 20.00
7 2023-02-18 7927 9.87 449 11.58 N.A. N.A. 5234 8.31 1517 10.61 707 18.39
8 2023-02-25 7812 9.55 424 12.03 N.A. N.A. 5232 8.12 1463 10.25 671 17.44
9 2023-03-04 8218 9.77 421 9.26 N.A. N.A. 5408 8.69 1621 10.30 736 16.03
10 2023-03-11 7758 9.42 472 9.32 N.A. N.A. 5023 7.78 1521 12.29 714 14.85
11 2023-03-18 7677 8.77 428 8.41 N.A. N.A. 4994 7.21 1491 10.60 740 15.27
12 2023-03-25 7973 9.31 456 12.06 N.A. N.A. 5167 7.14 1619 12.91 710 14.65
13 2023-04-01 7640 8.35 467 11.78 N.A. N.A. 5062 7.13 1474 9.43 620 12.90
14 2023-04-08 6941 8.95 399 11.03 N.A. N.A. 4352 7.61 1494 10.44 672 12.65
15 2023-04-15 7171 9.16 482 11.00 N.A. N.A. 4591 7.19 1427 11.70 658 16.11
16 2023-04-22 6819 8.67 450 9.33 N.A. N.A. 4325 6.82 1375 11.93 649 13.41
17 2023-04-29 6436 9.88 443 15.12 N.A. N.A. 4036 7.53 1271 12.90 671 14.61
18 2023-05-06 6416 10.97 390 18.21 N.A. N.A. 4053 8.54 1342 13.41 615 17.24
19 2023-05-13 5821 11.03 342 10.53 N.A. N.A. 3596 8.87 1287 13.99 578 17.65
20 2023-05-20 5629 10.82 367 11.99 N.A. N.A. 3545 8.27 1084 15.50 621 16.59
21 2023-05-27 5000 10.40 379 10.03 N.A. N.A. 3136 8.83 1012 12.75 460 15.65

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 7619 2.64 420 5.24 816 6.62 3877 1.81 1766 1.70 740 3.38
7 2023-02-18 7381 3.14 449 4.45 860 5.93 3812 2.62 1553 1.80 707 4.67
8 2023-02-25 7223 3.06 424 4.95 795 5.28 3844 2.78 1489 1.88 671 3.43
9 2023-03-04 7544 3.41 421 5.23 788 7.99 3962 2.73 1637 2.75 736 2.58
10 2023-03-11 7115 3.70 472 5.30 766 8.09 3615 3.10 1548 2.26 714 4.06
11 2023-03-18 7116 3.70 428 4.67 764 6.41 3638 3.55 1546 2.65 740 3.24
12 2023-03-25 7212 4.53 456 2.85 642 9.66 3754 4.45 1650 3.09 710 4.79
13 2023-04-01 7010 4.04 467 4.28 789 6.08 3636 3.91 1498 3.67 620 2.90
14 2023-04-08 6318 4.51 399 3.76 731 6.02 2976 4.50 1540 4.16 672 4.17
15 2023-04-15 6632 3.56 482 3.53 825 5.21 3209 3.02 1458 3.57 658 4.10
16 2023-04-22 6369 3.64 450 4.00 821 3.41 3046 3.81 1403 3.56 649 3.08
17 2023-04-29 6056 4.36 443 7.90 802 2.74 2836 4.23 1304 3.99 671 5.22
18 2023-05-06 5940 3.42 390 4.36 806 1.49 2752 4.18 1377 2.61 615 3.74
19 2023-05-13 5486 3.46 342 3.80 802 1.75 2456 4.15 1308 3.21 578 3.29
20 2023-05-20 5136 2.71 367 6.81 723 1.94 2333 2.70 1092 2.11 621 2.25
21 2023-05-27 4615 2.10 379 8.97 712 0.70 2036 1.77 1028 1.46 460 1.52

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