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Respiratory Virus Report, Week 7 - ending February 17, 2024

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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 7 (week ending February 17, 2024) in Canada, participating RVDSS laboratories reported 2,759 detections of SARS-CoV-2 from 33,895 tests (8.1% positive). Among non-SARS-CoV-2 respiratory viruses, where test volumes are lower (range of 8,396 to 32,746 tests), activity of flu is highest but remains below expected levels for this time of year.

  • National SARS-CoV-2 percent positivity has been decreasing since mid-December 2023.
  • Activity of influenza A has been stable since mid-January and remains below expected levels for this time of year (3,099 detections; 9.5% positive). Activity of influenza B has been increasing over the past 5 weeks but remains low (685 detections; 2.1% positive).
  • Activity of RSV is stable and remains below expected levels for this time of year (1,247 detections; 4.5% positive).
  • Activity of all other non-SARS-CoV-2 respiratory viruses is low and near expected levels typical of this time of year.
  • 34/35 sentinel laboratories reported surveillance data

On this page

Abbreviations:
ADV
Adenovirus
Atl
Atlantic Canada
BC
British Columbia
Can
Canada
EORLA
Eastern Ontario Regional Laboratory Association
EV/RV
Enterovirus/Rhinovirus
Flu
Influenza
Flu A(H1)pdm09
Influenza A(H1N1)pdm09
Flu A(H3)
Influenza A(H3N2)
Flu A(UnS)
Influenza A(Unsubtyped)
HCoV
Human coronavirus 229E/OC43/NL63/HKU1
HMPV
Human metapneumovirus
HPIV
Human parainfluenza virus
HSC
Health Sciences Centre
N.C.
Data not collected
N.R.
Data not reported for current week
ON
Ontario
PR
Prairies
P.H.O.L.
Public Health Ontario Laboratory
QC
Quebec
RSV
Respiratory syncytial virus
RVDSS
Respiratory Virus Detection Surveillance System
SARS-CoV-2
Severe acute respiratory syndrome coronavirus 2
Terr
Territories of Canada
UHN
University Health Network

Respiratory virus detections

Table 1: Respiratory virus detections for the week ending February 17, 2024 (surveillance week 2024-07)
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 684 63 476 0 0 57 57 12 476 46 476 1 3 1 2 0 476 5 476 15 476 17 476 34
Prince Edward Island 193 12 180 0 0 17 17 5 180 31 18 0 0 0 0 0 18 1 18 2 18 3 18 2
Nova Scotia 1185 117 1099 0 0 132 132 15 827 30 42 0 0 1 0 0 42 0 42 0 42 3 42 1
New Brunswick 1123 92 1127 18 2 27 47 47 1127 105 83 0 0 0 0 0 83 2 83 1 83 16 83 2
Atlantic 3185 284 2882 18 2 233 253 79 2610 212 619 1 3 2 2 0 619 8 619 18 619 39 619 39
Région Nord-Est 1585 102 1658 0 0 243 243 27 731 78 79 0 0 0 0 0 79 2 78 2 N.C. N.C. 79 7
Québec-Chaudière-Appalaches 1786 122 2182 0 0 471 471 70 2029 77 710 0 0 0 1 0 721 7 710 32 N.C. N.C. 545 35
Centre-du-Québec 2504 134 2306 0 0 500 500 42 966 48 45 0 0 0 0 0 45 3 45 6 N.C. N.C. 45 3
Montréal-Laval 2468 146 3483 1 0 469 470 14 1916 83 986 0 0 8 0 0 986 23 988 26 N.C. N.C. 986 88
Ouest du Québec 1364 135 820 0 0 117 117 15 812 30 16 0 0 1 0 0 16 1 16 1 N.C. N.C. 16 3
Montérégie 1377 96 1520 0 0 187 187 15 1519 47 11 0 0 0 0 0 11 0 11 2 N.C. N.C. 11 0
Province of Québec 11084 735 11969 1 0 1987 1988 183 7973 363 1847 0 0 9 1 0 1858 36 1848 69 N.C. N.C. 1682 136
P.H.O.L. - Ottawa 197 35 169 8 0 1 9 4 167 1 107 0 0 0 0 3 107 0 107 3 107 2 107 19
EORLA 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.
P.H.O.L. - Kingston 188 14 134 13 0 12 25 1 134 2 106 0 0 0 0 0 106 0 106 4 106 4 106 13
UHN / Mount Sinai Hospital 1080 60 747 0 1 24 25 8 747 2 71 0 0 0 0 0 71 0 71 0 71 3 71 6
P.H.O.L. - Toronto 439 67 959 31 9 25 59 18 959 12 912 0 0 0 0 34 912 10 912 26 912 35 912 135
Sick Kids Hospital - Toronto 128 9 126 3 6 0 9 4 126 0 126 0 0 5 0 0 126 3 126 8 126 23 126 5
Shared Hospital Laboratory 1841 71 1467 27 17 49 93 26 1467 11 1456 0 0 0 0 11 1456 8 1463 16 1463 24 1463 37
P.H.O.L. - Sault Ste. Marie 46 1 49 6 0 4 10 0 49 2 26 0 0 0 0 0 26 0 26 0 26 0 26 14
P.H.O.L. - Timmins 32 5 39 2 0 2 4 0 39 1 27 0 0 0 0 3 27 0 27 0 27 1 27 2
St. Joseph's - London 919 64 695 0 0 50 50 14 695 5 68 0 0 0 0 1 68 0 68 2 68 8 68 7
P.H.O.L. - London 406 40 349 6 3 10 19 7 349 8 284 0 0 0 0 7 284 0 284 10 284 21 284 58
P.H.O.L. - Orillia 23 4 41 3 0 0 3 0 41 1 39 0 0 0 0 0 39 0 39 5 39 1 39 2
P.H.O.L. - Thunder Bay 65 20 43 0 0 0 0 0 43 2 36 0 0 0 0 0 36 0 36 1 36 0 36 2
P.H.O.L. - Sudbury 45 18 59 4 0 2 6 0 59 0 27 0 0 0 0 0 27 0 27 0 27 0 27 0
P.H.O.L. - Hamilton 218 42 178 2 4 12 18 2 178 1 148 0 0 0 0 6 148 1 148 2 148 6 148 15
P.H.O.L. - Peterborough 69 10 83 1 1 18 19 1 83 2 47 0 0 0 0 0 47 0 47 1 47 6 47 1
St. Joseph's - Hamilton 1800 84 1715 0 0 129 129 37 1715 23 1715 0 0 4 0 0 1715 10 1715 35 1715 85 0 0
Sault Area Hospital 229 34 154 5 0 1 6 0 154 7 132 1 0 1 0 0 132 0 132 0 132 6 132 11
Province of Ontario 7725 578 7007 111 41 339 484 122 7005 80 5327 1 0 10 0 65 5327 32 5334 113 5334 225 3619 327
Manitoba 1472 160 1171 1 0 16 17 14 1171 102 75 0 0 3 0 0 75 1 102 5 75 11 102 8
Saskatchewan 1731 147 1298 0 0 18 18 65 1054 85 424 1 0 2 0 0 424 3 424 27 424 37 424 34
Alberta 4776 435 4421 40 24 2 75 162 4162 183 1151 2 0 25 0 0 1151 16 1119 1 1139 92 1151 62
Prairies 7979 742 6890 41 24 36 110 241 6387 370 1650 3 0 30 0 0 1650 20 1645 33 1638 140 1677 104
British Columbia 3725 407 3853 45 24 6 262 50 3693 188 840 3 8 13 3 0 840 28 840 64 799 112 799 52
Yukon 52 6 34 0 0 0 0 0 34 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 36 0 36 0 0 0 0 7 36 18 N.C. N.C. N.C. N.C. N.C. N.C. 36 3 36 0 36 5 N.C. N.C.
Nunavut 109 7 75 1 0 1 2 3 75 15 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 197 13 145 1 0 1 2 10 145 34 N.C. N.C. N.C. N.C. N.C. N.C. 36 3 36 0 36 5 N.C. N.C.
CANADA 33895 2759 32746 217 91 2602 3099 685 27813 1247 10283 8 11 64 6 65 10330 127 10322 297 8426 521 8396 658

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 27, 2023 to February 17, 2024 (surveillance weeks 2023-35 to 2024-07)
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 16036 2568 11564 0 0 1188 1188 40 11564 733 11564 9 55 22 98 0 11564 190 11564 157 11564 1005 11564 227
Prince Edward Island 5793 671 3317 0 0 489 489 16 3317 258 377 2 0 0 8 0 376 19 366 5 376 108 360 6
Nova Scotia 37166 7701 24029 0 0 1947 1947 190 19635 1225 861 15 2 2 10 0 861 39 854 3 861 202 860 2
New Brunswick 27291 3469 24788 801 20 1758 2579 120 24384 1421 2176 7 4 1 24 0 2176 85 2176 25 2176 438 2176 72
Atlantic 86286 14409 63698 801 20 5382 6203 366 58900 3637 14978 33 61 25 140 0 14977 333 14960 190 14977 1753 14960 307
Région Nord-Est 43971 6750 38290 5 0 4166 4171 72 14589 1075 1864 14 11 10 16 0 1864 82 1824 55 N.C. N.C. 1864 37
Québec-Chaudière-Appalaches 53031 9026 31175 0 0 4503 4503 169 30167 2220 12325 20 9 7 11 0 12676 421 12324 277 N.C. N.C. 10398 235
Centre-du-Québec 64366 11977 26401 0 0 3250 3250 125 16979 1343 960 15 8 13 7 0 960 49 960 35 N.C. N.C. 988 35
Montréal-Laval 79153 13430 58527 3 1 5280 5284 93 38804 2500 20597 92 38 103 24 0 20597 417 20656 360 N.C. N.C. 20597 537
Ouest du Québec 43282 9700 17079 4 0 1629 1633 82 16930 972 493 11 3 6 6 0 493 37 493 10 N.C. N.C. 493 17
Montérégie 41011 7650 30950 0 0 2496 2496 67 29890 1535 165 1 0 0 1 0 165 6 165 3 N.C. N.C. 165 1
Province of Québec 324814 58533 202422 12 1 21324 21337 608 147359 9645 36404 153 69 139 65 0 36755 1012 36422 740 N.C. N.C. 34505 862
P.H.O.L. - Ottawa 9149 3442 6083 258 53 114 302 12 6075 125 3586 0 0 0 0 58 3586 11 3584 42 3586 382 3584 101
EORLA 32704 4117 14521 0 0 1271 1271 78 14521 1068 932 2 4 9 4 0 907 9 932 7 932 173 932 16
P.H.O.L. - Kingston 6393 2001 3477 107 16 64 161 3 3477 166 2460 0 0 0 0 40 2460 10 2460 7 2460 311 2460 26
UHN / Mount Sinai Hospital 28389 2839 17473 40 9 462 511 48 17473 188 828 0 0 7 2 0 828 1 828 0 828 35 828 26
P.H.O.L. - Toronto 16200 5255 28248 1067 873 259 1560 105 28239 992 25762 0 0 0 0 714 25769 292 25747 277 25762 2566 25747 869
Sick Kids Hospital - Toronto 3291 279 2913 97 89 20 206 16 2913 304 2913 14 12 45 18 0 2913 70 2913 51 2913 507 2913 74
Shared Hospital Laboratory 43404 4305 37069 716 481 236 1433 114 37074 1300 36902 0 0 0 0 217 31248 272 36938 116 36983 1272 36960 346
P.H.O.L. - Sault Ste. Marie 384 186 446 45 3 15 57 0 446 43 308 0 0 0 0 3 308 1 308 0 308 21 308 23
P.H.O.L. - Timmins 879 249 823 55 8 23 75 0 823 60 668 0 0 0 0 17 668 4 668 4 668 46 668 9
St. Joseph's - London 22571 3226 11025 0 0 816 816 66 11025 685 1662 0 0 0 0 18 1681 25 1681 10 1683 197 1681 36
P.H.O.L. - London 12260 3846 8806 397 125 95 442 30 8803 456 7038 0 0 0 0 177 7038 34 7036 44 7038 650 7036 186
P.H.O.L. - Orillia 494 136 1178 59 17 7 83 0 1175 74 1123 0 0 0 0 26 1123 15 1123 17 1123 144 1123 11
P.H.O.L. - Thunder Bay 1582 465 945 55 0 7 34 1 942 23 778 0 0 0 0 25 778 5 778 20 778 53 778 5
P.H.O.L. - Sudbury 595 235 694 30 1 19 50 0 692 21 469 0 0 0 0 6 470 1 469 1 469 43 469 5
P.H.O.L. - Hamilton 6257 1989 4973 125 62 75 208 17 4972 170 3665 0 0 0 0 105 3665 64 3664 50 3665 483 3664 136
P.H.O.L. - Peterborough 1989 660 1962 201 202 56 129 8 1952 216 1566 0 0 0 0 44 1566 34 1566 22 1566 258 1566 28
St. Joseph's - Hamilton 48755 5439 42752 0 0 2679 2679 240 42752 1681 42752 0 0 244 0 0 42752 262 42752 249 42752 2505 0 0
Sault Area Hospital 4739 649 3200 166 8 49 223 4 3193 168 2508 24 0 11 16 0 2459 31 2459 2 2459 235 2469 22
Province of Ontario 240035 39318 186588 3418 1947 6267 10240 742 186547 7740 135920 40 16 316 40 1450 130219 1141 135906 919 135973 9881 93186 1919
Manitoba 41636 6327 31562 140 11 1770 1921 108 31562 1131 2353 0 9 10 41 0 2353 103 3059 100 2353 471 3059 65
Saskatchewan 54259 6623 37307 101 8 5295 5404 584 33807 1145 11439 24 9 22 20 0 11439 239 11439 609 11439 1165 11439 187
Alberta 140015 17916 119323 11545 645 570 12832 1167 111095 5196 32892 112 81 216 3 0 32884 402 32117 22 32367 3063 32891 582
Prairies 235910 30866 188192 11786 664 7635 20157 1859 176464 7472 46684 136 99 248 64 0 46676 744 46615 731 46159 4699 47389 834
British Columbia 96135 13345 95981 3794 595 224 7508 330 93896 4948 22100 107 155 139 156 0 22102 693 21987 671 21183 3395 21160 467
Yukon 1385 158 905 30 12 0 49 1 898 42 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C.
Northwest Territories 905 61 846 166 6 1 173 8 846 97 N.C. N.C. N.C. N.C. N.C. N.C. 647 33 647 7 846 110 N.C. N.C.
Nunavut 3088 271 2148 426 30 51 507 11 2148 254 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 5378 490 3899 622 48 52 729 20 3892 393 N.C. N.C. N.C. N.C. N.C. N.C. 647 33 647 7 846 110 N.C. N.C.
CANADA 988558 156961 740780 20433 3275 40884 66174 3925 667058 33835 256086 469 400 867 465 1450 251376 3956 256537 3258 219138 19838 211200 4389

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 prior 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 2023-2024 SARS-CoV-2% 2022-2023 SARS-CoV-2% 2023-2024 A% 2022-2023 A% 2021-2022 A% Max A% Base Min A% Base Av A% Base 2023-2024 B% 2022-2023 B% 2021-2022 B% Max B% Base Min B% Base Av B% Base 2023-2024 RSV% 2022-2023 RSV% 2021-2022 RSV% Max RSV% Base Min RSV% Base Av RSV% Base
35 2023-09-02 14.40 13.40 0.69 0.18 0.04 1.60 0.11 0.67 0.06 0.02 0.00 0.28 0.00 0.14 0.58 1.12 4.43 1.34 0.38 0.61
36 2023-09-09 15.92 13.07 0.43 0.14 0.01 2.11 0.23 0.99 0.06 0.04 0.00 0.55 0.00 0.15 0.71 1.12 6.61 1.09 0.22 0.62
37 2023-09-16 16.49 12.74 0.48 0.23 0.03 1.59 0.35 0.87 0.03 0.01 0.00 0.19 0.04 0.12 0.81 1.06 7.59 1.37 0.38 0.65
38 2023-09-23 18.61 13.62 0.51 0.48 0.00 2.15 0.43 1.17 0.02 0.02 0.00 0.21 0.00 0.14 1.15 1.47 7.16 1.24 0.37 0.67
39 2023-09-30 19.60 14.44 0.52 0.67 0.01 2.65 0.50 1.52 0.09 0.03 0.00 0.29 0.09 0.18 1.14 2.14 8.48 1.29 0.51 0.72
40 2023-10-07 19.81 15.06 0.66 0.96 0.00 2.17 1.01 1.58 0.05 0.03 0.02 0.20 0.05 0.11 1.35 2.54 8.53 1.39 0.34 0.71
41 2023-10-14 17.55 16.59 0.51 1.42 0.03 2.66 1.05 1.56 0.03 0.01 0.03 0.36 0.03 0.16 1.80 3.65 9.54 1.74 0.58 1.03
42 2023-10-21 17.78 15.39 0.73 2.36 0.03 2.96 0.77 1.92 0.08 0.05 0.02 0.45 0.05 0.25 2.38 4.63 8.18 2.11 0.63 1.25
43 2023-10-28 17.89 15.78 1.18 5.47 0.03 5.19 0.68 2.59 0.10 0.03 0.02 0.55 0.06 0.23 3.26 6.76 8.11 2.16 0.55 1.41
44 2023-11-04 17.74 13.91 2.66 10.75 0.10 8.32 1.08 3.35 0.10 0.03 0.10 0.71 0.12 0.31 4.06 7.77 7.82 3.35 0.83 2.07
45 2023-11-11 18.17 12.43 4.79 16.19 0.07 9.83 1.18 4.19 0.14 0.04 0.06 0.97 0.22 0.44 5.16 7.68 7.03 4.43 1.29 2.71
46 2023-11-18 18.80 11.96 7.37 20.23 0.10 13.89 1.42 5.43 0.16 0.05 0.06 1.49 0.09 0.57 5.85 7.54 7.18 6.33 1.38 3.60
47 2023-11-25 19.31 11.76 8.47 24.27 0.13 15.25 1.25 6.91 0.11 0.04 0.07 2.13 0.13 0.80 6.88 6.66 8.10 8.69 1.79 4.79
48 2023-12-02 18.03 12.12 11.35 24.04 0.19 18.07 0.76 9.40 0.23 0.03 0.15 3.18 0.08 1.20 7.09 6.87 8.92 9.47 3.11 6.08
49 2023-12-09 17.54 12.61 14.38 21.12 0.23 19.13 1.43 11.34 0.28 0.06 0.05 4.21 0.19 1.60 7.44 7.29 10.09 12.26 5.40 7.54
50 2023-12-16 17.79 13.10 15.28 17.31 0.23 26.42 1.97 13.93 0.36 0.06 0.02 7.50 0.15 2.48 7.22 8.61 10.78 13.19 6.42 8.55
51 2023-12-23 16.83 14.09 16.78 12.50 0.18 28.53 2.27 16.69 0.45 0.05 0.02 10.44 0.19 3.30 7.27 9.16 8.97 15.23 7.40 9.92
52 2023-12-30 15.37 15.53 18.12 7.93 0.09 33.97 3.30 20.32 0.51 0.07 0.01 12.58 0.23 4.04 7.38 10.59 6.72 17.80 7.89 10.97
1 2024-01-06 14.51 15.03 14.45 4.54 0.08 30.93 4.58 19.59 0.60 0.07 0.00 10.34 0.22 3.87 7.07 10.34 5.26 15.62 8.37 10.84
2 2024-01-13 13.03 13.38 11.17 2.21 0.11 26.80 5.46 19.11 0.56 0.05 0.01 11.01 0.29 3.91 6.24 9.07 4.32 14.05 7.45 10.24
3 2024-01-20 11.35 12.21 10.28 1.40 0.04 28.20 9.13 18.95 0.79 0.14 0.01 12.75 0.35 4.70 6.11 8.43 3.42 15.56 7.90 10.95
4 2024-01-27 10.19 11.30 11.08 0.91 0.05 27.01 12.34 18.82 1.08 0.14 0.00 12.74 0.41 5.17 5.83 7.96 2.33 15.88 8.38 11.89
5 2024-02-03 9.34 11.51 11.25 0.76 0.03 23.66 15.78 19.15 1.47 0.28 0.01 14.84 0.41 5.77 5.89 7.15 2.19 16.33 8.77 12.14
6 2024-02-10 8.79 11.88 10.34 0.67 0.04 23.36 15.68 18.80 1.74 0.34 0.01 16.23 0.44 6.22 5.19 5.78 2.10 15.79 7.98 12.32
7 2024-02-17 8.14 11.79 9.46 0.57 0.02 24.22 15.48 18.53 2.09 0.29 0.00 17.02 0.35 6.56 4.48 5.13 2.16 15.53 8.42 11.89
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 2023-2024 EV/RV% 2022-2023 EV/RV% 2021-2022 EV/RV% Max EV/RV% Base Min EV/RV% Base Av EV/RV% Base 2023-2024 HPIV% 2022-2023 HPIV% 2021-2022 HPIV% Max HPIV% Base Min HPIV% Base Av HPIV% Base 2023-2024 ADV% 2022-2023 ADV% 2021-2022 ADV% Max ADV% Base Min ADV% Base Av ADV% Base 2023-2024 HMPV% 2022-2023 HMPV% 2021-2022 HMPV% Max HMPV% Base Min HMPV% Base Av HMPV% Base 2023-2024 HCoV% 2022-2023 HCoV% 2021-2022 HCoV% Max HCoV% Base Min HCoV% Base Av HCoV% Base
35 2023-09-02 12.50 15.47 21.96 27.19 22.44 24.71 1.99 2.80 5.99 3.16 1.15 2.44 1.62 2.28 1.18 1.74 0.99 1.43 0.34 1.80 0.23 2.04 0.10 0.78 0.28 0.53 1.05 0.76 0.18 0.45
36 2023-09-09 14.85 16.22 18.59 30.69 23.30 26.31 1.49 3.21 4.93 3.31 1.35 2.32 1.50 2.18 1.15 2.85 1.42 1.87 0.38 1.81 0.24 0.84 0.10 0.48 0.42 0.38 0.62 0.38 0.12 0.22
37 2023-09-16 18.29 21.73 27.46 33.58 27.74 31.69 1.60 3.02 5.97 3.26 1.65 2.40 1.47 2.10 0.81 2.44 1.38 1.86 0.39 1.38 0.17 1.61 0.00 0.51 0.23 0.28 0.44 0.56 0.00 0.26
38 2023-09-23 20.25 23.50 33.19 39.57 32.80 35.83 1.77 2.42 4.73 2.87 1.92 2.33 0.93 1.58 0.82 2.04 1.11 1.63 0.38 1.61 0.37 1.43 0.06 0.48 0.46 0.32 0.67 1.36 0.06 0.43
39 2023-09-30 18.51 22.89 30.01 40.59 34.87 37.68 1.32 3.09 8.12 3.01 1.70 2.24 1.15 2.21 1.14 2.27 1.04 1.66 0.51 1.43 0.17 0.72 0.05 0.29 0.28 0.59 0.62 0.66 0.07 0.45
40 2023-10-07 17.45 19.32 26.26 41.29 33.00 35.43 1.34 3.69 8.19 3.28 1.90 2.43 1.41 1.79 1.31 2.25 1.39 1.82 0.32 1.49 0.16 0.92 0.05 0.34 0.26 0.93 0.57 1.08 0.22 0.59
41 2023-10-14 15.74 16.70 22.91 33.62 26.94 29.93 1.28 3.52 10.46 3.70 1.96 2.75 1.38 2.03 1.37 1.91 1.28 1.70 0.37 1.66 0.20 0.95 0.04 0.46 0.32 0.99 1.69 0.70 0.00 0.34
42 2023-10-21 13.12 12.95 22.16 32.62 24.54 27.86 1.59 4.22 10.01 3.89 2.64 3.21 1.43 1.65 2.54 2.39 1.47 1.86 0.46 1.58 0.15 0.89 0.15 0.40 0.17 1.16 1.07 1.18 0.20 0.49
43 2023-10-28 12.53 11.05 19.64 28.73 21.67 24.95 1.21 4.41 9.38 3.98 3.18 3.54 1.48 1.79 1.15 2.42 1.63 1.96 0.46 1.79 0.36 1.64 0.12 0.58 0.38 1.86 1.05 2.35 0.27 0.75
44 2023-11-04 10.81 10.23 21.45 23.82 16.75 21.38 1.44 4.14 10.28 4.81 2.94 3.72 1.76 2.02 1.42 2.88 1.18 2.21 0.55 1.79 0.77 1.08 0.23 0.48 0.37 2.54 2.21 2.59 0.21 0.88
45 2023-11-11 10.70 7.77 22.39 23.08 15.17 20.56 1.65 3.90 9.97 5.42 2.53 4.01 1.46 1.99 1.63 2.68 2.02 2.42 0.61 2.06 0.64 1.30 0.04 0.77 0.42 3.00 2.57 2.74 0.52 0.96
46 2023-11-18 8.65 6.93 21.37 22.77 15.28 19.24 1.39 3.97 8.29 5.72 1.62 4.14 2.03 1.87 2.51 2.90 1.99 2.52 0.80 1.89 0.99 1.43 0.18 0.81 0.65 3.54 2.99 3.32 0.46 1.25
47 2023-11-25 7.54 4.88 18.54 20.84 12.15 16.09 1.56 3.63 7.04 7.00 2.36 4.72 1.91 1.89 1.94 2.95 1.83 2.35 1.02 1.78 1.01 2.02 0.09 0.90 0.67 3.24 3.90 3.26 0.37 1.25
48 2023-12-02 6.84 4.74 16.64 16.72 12.69 13.84 1.50 3.04 5.78 6.14 3.03 4.18 2.16 1.87 1.89 3.34 1.66 2.49 0.93 1.86 1.48 1.94 0.31 1.09 0.77 3.94 4.94 4.30 1.00 2.04
49 2023-12-09 6.00 4.09 14.57 16.32 10.72 13.07 1.39 3.03 3.97 5.65 2.94 4.19 1.86 1.68 2.48 3.03 1.84 2.50 1.23 1.93 1.22 2.80 0.49 1.48 1.10 4.48 6.58 5.19 0.84 2.53
50 2023-12-16 5.90 4.58 12.40 13.85 8.43 10.91 1.46 2.98 3.23 5.95 2.54 4.22 2.00 2.29 2.72 3.13 1.49 2.42 1.31 1.92 1.08 3.32 0.46 1.68 1.47 5.13 7.26 6.04 1.54 3.16
51 2023-12-23 5.56 4.49 9.95 14.18 8.81 10.48 1.35 3.09 3.01 6.71 2.94 3.95 1.55 1.76 2.54 3.20 1.36 2.04 1.60 2.23 1.20 4.39 0.37 2.47 1.78 5.28 8.11 6.68 1.87 3.72
52 2023-12-30 4.70 4.50 7.71 14.41 6.24 9.26 1.35 3.32 2.13 5.08 2.87 3.75 1.76 1.80 1.92 2.59 1.20 1.76 1.77 2.75 1.00 3.81 0.41 2.49 2.48 4.73 10.33 6.73 2.78 4.73
1 2024-01-06 4.79 4.19 5.71 11.09 4.36 7.42 1.48 3.63 1.84 5.08 2.68 3.34 1.49 1.88 1.84 2.67 0.85 1.54 2.20 2.94 0.72 4.45 0.28 2.74 3.07 4.40 9.27 7.77 3.07 5.16
2 2024-01-13 4.43 4.71 3.98 9.55 4.31 6.79 1.17 3.24 1.19 4.12 2.46 3.05 1.25 1.87 1.13 2.15 0.87 1.37 1.65 2.61 0.38 4.76 0.42 2.69 3.20 4.01 7.46 7.89 2.84 5.45
3 2024-01-20 4.59 6.68 3.12 8.42 4.44 6.01 1.08 2.92 0.76 3.25 2.59 2.82 1.11 1.97 1.34 2.10 1.15 1.45 2.20 2.56 0.24 5.56 0.47 3.18 3.90 3.46 4.97 7.90 4.17 6.11
4 2024-01-27 4.37 8.22 2.60 9.04 4.89 6.41 1.16 2.78 0.64 3.12 1.77 2.55 1.56 2.35 1.18 1.83 1.11 1.49 2.11 2.71 0.23 5.19 0.55 3.05 5.19 2.63 3.92 7.86 3.79 6.09
5 2024-02-03 5.02 8.94 3.02 9.79 6.06 6.94 1.45 2.70 0.48 3.48 1.70 2.39 1.62 2.44 1.57 1.93 1.36 1.62 2.27 2.96 0.25 5.70 0.58 3.34 5.10 3.20 2.83 8.49 4.55 6.84
6 2024-02-10 6.26 9.97 3.86 9.89 6.16 6.98 1.56 2.68 0.51 2.89 1.57 2.19 1.84 2.14 1.44 1.74 1.25 1.51 2.54 3.73 0.42 5.57 0.65 3.48 6.80 2.64 3.01 8.57 3.48 6.75
7 2024-02-17 6.18 9.87 4.46 8.95 6.00 7.04 1.50 2.63 0.44 3.20 1.42 2.11 1.23 2.31 1.52 1.61 1.30 1.51 2.88 4.41 0.44 6.05 1.45 3.96 7.84 3.14 3.24 8.02 4.35 6.52

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 2023-09-02 25656 14.40 2110 16.92 9351 16.30 6230 12.39 5192 10.59 2651 18.03 122 11.48
36 2023-09-09 28237 15.92 2346 20.20 10215 17.37 6939 15.46 5968 11.90 2640 16.70 129 17.05
37 2023-09-16 31790 16.49 2567 18.62 11678 18.11 7337 15.66 6948 12.12 3111 20.64 149 10.07
38 2023-09-23 36264 18.61 2775 18.38 13455 20.48 8514 18.38 7969 14.23 3377 22.59 174 12.64
39 2023-09-30 40587 19.60 3126 22.65 15431 21.30 9291 17.86 8658 15.65 3895 23.59 186 13.98
40 2023-10-07 42173 19.81 3544 24.41 15684 22.19 9349 17.61 9198 15.96 4202 20.75 196 12.24
41 2023-10-14 38463 17.55 3583 20.74 12605 18.30 8426 15.27 9625 16.77 4047 19.13 177 15.25
42 2023-10-21 39350 17.78 3493 19.70 12590 18.63 9300 16.86 10040 17.16 3737 17.13 190 17.89
43 2023-10-28 37286 17.89 3095 17.74 12003 18.29 9276 19.35 9450 17.05 3262 14.87 200 18.00
44 2023-11-04 38183 17.74 2965 17.91 11975 18.42 9060 17.09 10341 18.12 3648 15.98 194 15.46
45 2023-11-11 38722 18.17 3122 20.12 11815 19.90 9607 18.24 10448 16.98 3545 14.41 185 10.81
46 2023-11-18 41432 18.80 3186 22.47 13182 20.21 10470 20.36 11134 16.80 3245 12.14 215 5.12
47 2023-11-25 42304 19.31 3490 22.35 12938 21.52 10880 22.17 11422 15.57 3385 11.96 189 6.35
48 2023-12-02 44714 18.03 3648 21.98 14100 22.18 11175 20.05 11903 12.58 3639 10.31 249 7.63
49 2023-12-09 46883 17.54 3654 20.17 14467 22.78 11648 18.66 12455 12.42 4272 10.30 387 7.75
50 2023-12-16 48216 17.79 4065 18.60 15835 23.97 12143 18.69 12089 11.17 3746 10.25 338 6.21
51 2023-12-23 48308 16.83 4353 15.81 16682 22.12 11548 18.73 11472 9.91 3952 10.55 301 11.63
52 2023-12-30 46939 15.37 4234 14.67 15739 19.65 11528 17.68 10314 9.95 4930 8.64 194 6.19
1 2024-01-06 48059 14.51 4471 12.68 15874 17.71 11545 16.83 10576 10.61 5300 9.57 293 7.17
2 2024-01-13 44189 13.03 4333 11.98 13921 14.75 11346 14.29 9475 9.91 4862 12.48 252 6.35
3 2024-01-20 38190 11.35 3750 10.64 11599 11.60 9942 12.87 8591 9.92 4141 10.92 167 4.19
4 2024-01-27 37090 10.19 3784 9.49 11052 9.79 9239 11.40 8358 8.95 4459 11.89 198 4.04
5 2024-02-03 36771 9.34 3908 8.75 10995 8.58 9011 9.75 8265 9.56 4420 10.63 172 5.81
6 2024-02-10 34744 8.79 3499 8.80 10544 7.33 8519 8.48 8042 10.12 3944 10.73 196 7.14
7 2024-02-17 33895 8.14 3185 8.92 11084 6.63 7725 7.48 7979 9.30 3725 10.93 197 6.60

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 2023-09-02 14536 0.69 0.06 984 0.00 0.00 3339 0.24 0.15 4324 0.39 0.09 3647 0.58 0.00 2158 2.46 0.00 84 2.38 0.00
36 2023-09-09 15421 0.43 0.06 1047 0.00 0.00 3649 0.19 0.03 4455 0.31 0.09 4060 0.37 0.05 2117 1.46 0.09 93 0.00 0.00
37 2023-09-16 18031 0.48 0.03 1216 0.08 0.00 4174 0.41 0.07 5145 0.29 0.00 4701 0.38 0.04 2703 1.29 0.04 92 0.00 0.00
38 2023-09-23 20119 0.51 0.02 1388 0.07 0.00 4734 0.30 0.00 5652 0.21 0.05 5323 0.62 0.02 2928 1.47 0.00 94 0.00 0.00
39 2023-09-30 21521 0.52 0.09 1403 0.14 0.07 4847 0.21 0.08 6186 0.37 0.11 5362 0.50 0.11 3598 1.36 0.06 125 0.00 0.00
40 2023-10-07 23652 0.66 0.05 1775 0.34 0.00 5628 0.37 0.04 6456 0.31 0.00 5797 0.79 0.16 3878 1.60 0.05 118 0.00 0.00
41 2023-10-14 23195 0.51 0.03 1938 0.57 0.00 4978 0.22 0.06 6283 0.30 0.00 6054 0.81 0.05 3828 0.73 0.03 114 0.00 0.00
42 2023-10-21 24050 0.73 0.08 2029 0.69 0.05 5110 0.37 0.02 6834 0.47 0.07 6353 1.13 0.13 3599 1.06 0.11 125 0.00 0.00
43 2023-10-28 23241 1.18 0.10 1979 0.96 0.00 5450 0.64 0.11 6814 0.50 0.06 5845 2.41 0.17 3039 1.45 0.10 114 0.88 0.00
44 2023-11-04 25300 2.66 0.10 1914 1.25 0.05 5705 0.63 0.07 6996 0.51 0.06 6979 6.89 0.17 3562 2.58 0.11 144 2.08 0.00
45 2023-11-11 25837 4.79 0.14 2069 2.03 0.14 5970 0.84 0.07 7240 1.22 0.07 6973 13.14 0.29 3460 3.96 0.14 125 3.20 0.00
46 2023-11-18 28577 7.37 0.16 2219 3.11 0.09 6454 1.36 0.09 7797 2.68 0.15 8728 18.56 0.26 3258 3.59 0.12 121 2.48 0.00
47 2023-11-25 29078 8.47 0.11 2521 4.60 0.04 6561 2.04 0.06 8070 2.69 0.02 8277 21.18 0.28 3517 6.43 0.09 132 12.88 0.00
48 2023-12-02 31931 11.35 0.23 2743 4.89 0.11 7199 3.78 0.15 8448 4.46 0.17 9556 24.79 0.41 3836 10.79 0.21 149 38.93 0.00
49 2023-12-09 33606 14.38 0.28 2817 9.66 0.11 8141 7.14 0.12 8462 7.03 0.21 10335 26.93 0.57 3590 13.12 0.11 261 49.43 0.00
50 2023-12-16 38769 15.28 0.36 3363 12.73 0.09 10087 11.63 0.12 9266 8.48 0.41 11272 24.33 0.70 4496 14.23 0.16 285 54.39 0.00
51 2023-12-23 40906 16.78 0.45 3820 19.08 0.31 12090 15.38 0.12 9246 11.39 0.51 10787 21.65 0.90 4747 16.64 0.29 216 45.37 0.00
52 2023-12-30 42537 18.12 0.51 3874 20.99 0.36 13501 19.37 0.07 9835 15.06 0.63 9834 17.57 1.23 5352 18.89 0.24 141 42.55 0.00
1 2024-01-06 43384 14.45 0.60 4132 17.91 0.36 13858 17.30 0.22 9869 11.67 0.54 9643 11.21 1.43 5634 14.55 0.39 248 32.26 0.00
2 2024-01-13 40346 11.17 0.56 3864 15.79 0.31 12702 15.32 0.19 9980 9.08 0.59 8604 6.02 1.31 4963 9.83 0.32 233 15.88 0.43
3 2024-01-20 35317 10.28 0.79 3422 14.23 0.94 11099 14.72 0.36 8812 8.65 0.45 7447 4.20 2.04 4397 9.71 0.34 140 5.71 0.00
4 2024-01-27 35282 11.08 1.08 3461 14.59 1.36 11277 17.65 0.28 8275 8.88 0.59 7368 2.33 2.86 4722 10.67 0.87 179 2.79 0.00
5 2024-02-03 35634 11.25 1.47 3608 14.61 2.02 12036 19.09 0.61 7738 8.30 1.02 7492 1.88 3.15 4626 8.58 1.25 134 2.24 2.99
6 2024-02-10 34086 10.34 1.74 3230 12.38 1.98 11864 17.99 1.05 7402 7.23 1.50 7311 1.75 3.24 4120 7.99 1.24 159 0.00 3.14
7 2024-02-17 32746 9.46 2.09 2882 8.78 2.74 11969 16.61 1.53 7007 6.91 1.74 6890 1.60 3.50 3853 6.80 1.30 145 1.38 6.90

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 2023-09-02 13603 0.58 969 0.00 2540 1.14 4324 0.81 3528 0.20 2158 0.32 84 1.19
36 2023-09-09 14352 0.71 1047 0.57 2750 1.64 4455 0.88 3906 0.18 2101 0.24 93 0.00
37 2023-09-16 16804 0.81 1201 0.25 3181 1.67 5138 1.01 4490 0.38 2702 0.41 92 0.00
38 2023-09-23 18780 1.15 1381 1.30 3652 2.27 5652 1.43 5073 0.37 2928 0.51 94 0.00
39 2023-09-30 20209 1.14 1392 0.79 3788 2.38 6186 1.42 5120 0.43 3598 0.56 125 0.00
40 2023-10-07 22036 1.35 1761 0.28 4333 2.75 6456 1.95 5490 0.36 3878 0.72 118 0.00
41 2023-10-14 21735 1.80 1927 0.83 3897 3.70 6281 2.48 5688 0.63 3828 1.04 114 0.00
42 2023-10-21 22467 2.38 2015 0.69 3889 4.78 6834 3.72 6005 0.58 3599 1.25 125 0.00
43 2023-10-28 21718 3.26 1970 1.78 4234 6.24 6814 4.21 5547 1.23 3039 1.74 114 0.00
44 2023-11-04 23641 4.06 1904 2.15 4506 6.88 6997 5.80 6528 1.78 3562 2.36 144 2.78
45 2023-11-11 24136 5.16 2058 2.77 4680 7.97 7241 7.62 6573 2.01 3459 3.58 125 6.40
46 2023-11-18 26512 5.85 2195 2.41 4910 10.14 7796 7.91 8232 2.87 3258 4.27 121 7.44
47 2023-11-25 26749 6.88 2363 4.70 4975 11.82 8068 8.66 7766 3.17 3445 5.28 132 11.36
48 2023-12-02 29413 7.09 2549 5.88 5533 11.46 8448 8.49 8951 3.58 3783 6.66 149 8.72
49 2023-12-09 30352 7.44 2665 7.69 5930 11.11 8461 7.40 9560 4.44 3475 9.35 261 6.90
50 2023-12-16 34765 7.22 3004 8.46 7537 9.73 9262 5.99 10330 5.09 4347 9.50 285 10.53
51 2023-12-23 36058 7.27 3258 9.45 8774 9.14 9244 4.64 9954 6.38 4615 9.36 213 6.57
52 2023-12-30 37695 7.38 3431 8.57 9849 7.53 9834 4.62 9245 8.37 5196 9.49 140 18.57
1 2024-01-06 38059 7.07 3630 9.12 9953 7.31 9871 4.03 8953 7.45 5404 9.88 248 13.71
2 2024-01-13 35400 6.24 3383 9.16 9029 6.14 9975 3.27 8044 7.55 4737 7.81 232 17.67
3 2024-01-20 30932 6.11 2936 9.91 7837 5.82 8808 2.99 6997 8.09 4214 6.76 140 20.00
4 2024-01-27 30724 5.83 3067 10.01 7786 5.48 8261 2.61 6917 6.72 4514 7.35 179 24.02
5 2024-02-03 30559 5.89 3235 9.52 7985 5.07 7736 2.12 7045 8.05 4426 7.32 132 24.24
6 2024-02-10 29163 5.19 2949 10.07 7838 4.59 7404 1.62 6876 6.66 3937 6.27 159 20.75
7 2024-02-17 27813 4.48 2610 8.12 7973 4.55 7005 1.14 6387 5.79 3693 5.09 145 23.45

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 2023-09-02 6234 1.99 362 1.38 847 3.90 3406 1.85 984 1.02 635 2.05
36 2023-09-09 6321 1.49 355 1.69 868 2.19 3420 1.43 1133 0.97 545 1.65
37 2023-09-16 7419 1.60 401 2.49 1053 2.18 3886 1.34 1326 1.06 753 2.66
38 2023-09-23 8139 1.77 430 2.79 1122 2.85 4366 1.74 1445 0.90 776 1.42
39 2023-09-30 8626 1.32 401 1.25 1117 1.88 4948 1.33 1414 1.06 746 0.94
40 2023-10-07 8791 1.34 467 3.43 1178 2.04 4850 1.20 1541 0.39 755 1.85
41 2023-10-14 8879 1.28 491 1.63 1094 1.37 4898 1.16 1638 1.04 758 2.24
42 2023-10-21 9280 1.59 498 2.21 1050 1.52 5293 1.51 1706 1.47 733 2.18
43 2023-10-28 9084 1.21 474 1.48 1063 1.98 5223 0.96 1655 0.85 669 2.69
44 2023-11-04 9489 1.44 492 2.24 1067 2.06 5215 1.00 1931 1.24 784 3.57
45 2023-11-11 9601 1.65 467 2.78 1257 1.83 5242 1.11 1851 1.30 784 5.10
46 2023-11-18 10436 1.39 500 2.20 1426 1.33 5505 1.24 2186 0.87 819 3.42
47 2023-11-25 10619 1.56 620 1.77 1442 1.04 5708 1.47 1942 1.24 907 3.53
48 2023-12-02 11448 1.50 676 2.37 1587 1.32 5968 1.39 2234 1.03 983 2.95
49 2023-12-09 11332 1.39 668 1.65 1630 1.10 6035 1.44 2253 1.15 746 2.14
50 2023-12-16 12630 1.46 730 1.92 1664 0.72 6697 1.36 2457 1.47 1082 2.96
51 2023-12-23 12646 1.35 768 1.56 1857 0.54 6421 1.46 2406 0.79 1194 3.02
52 2023-12-30 12875 1.35 709 1.55 2004 0.85 6814 1.29 2167 0.97 1181 3.13
1 2024-01-06 13435 1.48 812 1.72 2046 0.59 7059 1.60 2289 1.18 1229 2.69
2 2024-01-13 13188 1.17 924 1.73 1882 0.53 7137 1.16 2117 1.09 1128 1.95
3 2024-01-20 11420 1.08 704 1.28 1843 0.49 6099 1.18 1771 1.13 1003 1.30
4 2024-01-27 11008 1.16 834 0.72 1793 0.28 5678 1.41 1707 1.41 996 1.31
5 2024-02-03 11179 1.45 794 1.26 1833 0.55 5534 1.66 1933 1.86 1085 1.29
6 2024-02-10 10716 1.56 782 0.77 1834 0.49 5194 1.73 1937 1.55 969 3.30
7 2024-02-17 10283 1.50 619 1.29 1847 0.54 5327 1.43 1650 2.00 840 3.21

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 2023-09-02 6238 1.62 362 1.93 851 2.70 3406 0.91 984 2.44 635 2.52
36 2023-09-09 6332 1.50 355 1.97 879 2.28 3420 0.82 1133 1.94 545 3.30
37 2023-09-16 7438 1.47 401 2.00 1071 2.43 3887 0.90 1326 1.96 753 1.86
38 2023-09-23 8149 0.93 429 1.17 1134 1.06 4365 0.62 1445 1.59 776 1.16
39 2023-09-30 8613 1.15 401 1.00 1129 2.04 4923 0.69 1414 1.63 746 2.01
40 2023-10-07 8809 1.41 467 2.36 1195 2.85 4851 0.66 1541 1.69 755 2.78
41 2023-10-14 8913 1.38 491 1.63 1111 3.42 4915 0.75 1638 1.47 758 2.11
42 2023-10-21 9285 1.43 498 1.20 1058 3.59 5292 0.76 1704 1.47 733 3.27
43 2023-10-28 9098 1.48 474 2.74 1077 3.62 5223 0.69 1655 1.63 669 2.99
44 2023-11-04 9507 1.76 492 2.03 1085 3.87 5215 1.04 1931 2.12 784 2.55
45 2023-11-11 9618 1.46 467 2.57 1274 2.98 5242 0.92 1851 1.67 784 1.40
46 2023-11-18 10447 2.03 500 4.60 1437 4.31 5505 0.94 2186 1.92 819 4.03
47 2023-11-25 10667 1.91 620 2.74 1461 3.97 5712 1.07 1941 1.55 911 3.84
48 2023-12-02 11509 2.16 676 3.25 1613 3.84 5968 1.36 2233 2.10 983 3.05
49 2023-12-09 11410 1.86 668 2.84 1652 3.75 6036 1.18 2253 1.33 746 3.62
50 2023-12-16 12718 2.00 730 2.19 1681 3.09 6697 1.78 2457 1.67 1082 2.40
51 2023-12-23 11969 1.55 768 1.82 1875 2.61 5726 0.89 2406 1.45 1194 3.02
52 2023-12-30 10863 1.76 709 2.12 2010 2.49 4797 0.81 2166 1.43 1181 4.74
1 2024-01-06 11643 1.49 812 1.11 2050 2.20 5186 0.75 2289 1.14 1229 4.15
2 2024-01-13 12084 1.25 924 1.52 1901 2.31 5943 0.59 2117 1.32 1126 2.49
3 2024-01-20 11458 1.11 704 1.56 1851 1.19 6091 0.64 1771 1.36 1003 2.89
4 2024-01-27 11063 1.56 834 2.88 1807 2.32 5676 0.78 1706 1.64 996 3.41
5 2024-02-03 11223 1.62 794 2.90 1841 2.55 5534 0.74 1933 1.55 1085 3.59
6 2024-02-10 10763 1.84 782 3.45 1854 2.59 5192 0.67 1935 1.45 969 5.88
7 2024-02-17 10330 1.23 619 1.29 1858 1.94 5327 0.60 1650 1.21 840 3.33

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 2023-09-02 6260 0.34 362 0.00 848 1.42 3407 0.21 1008 0.10 635 0.16
36 2023-09-09 6354 0.38 355 0.28 867 1.38 3423 0.20 1164 0.17 545 0.37
37 2023-09-16 7455 0.39 401 0.50 1053 0.76 3886 0.36 1362 0.07 753 0.53
38 2023-09-23 8194 0.38 429 0.00 1124 1.07 4365 0.14 1500 0.13 776 1.42
39 2023-09-30 8679 0.51 401 0.25 1118 0.89 4948 0.36 1466 0.34 746 1.34
40 2023-10-07 8828 0.32 457 0.44 1180 0.76 4853 0.14 1583 0.32 755 0.66
41 2023-10-14 8911 0.37 484 0.00 1096 1.00 4915 0.20 1658 0.12 758 1.32
42 2023-10-21 9320 0.46 498 0.20 1050 1.33 5298 0.32 1741 0.17 733 1.09
43 2023-10-28 9082 0.46 474 0.63 1066 1.41 5200 0.31 1673 0.18 669 0.75
44 2023-11-04 9512 0.55 492 0.20 1070 1.96 5218 0.17 1948 0.62 784 1.15
45 2023-11-11 9602 0.61 467 0.21 1256 2.15 5244 0.21 1851 0.70 784 0.89
46 2023-11-18 10310 0.80 500 0.40 1426 2.38 5505 0.36 2175 0.37 704 2.56
47 2023-11-25 10668 1.02 620 0.97 1442 2.57 5715 0.44 1958 0.66 911 2.96
48 2023-12-02 11476 0.93 676 0.89 1585 2.33 5966 0.47 2230 0.54 983 2.34
49 2023-12-09 11377 1.23 668 1.20 1635 2.39 6041 0.61 2232 2.20 746 0.94
50 2023-12-16 12682 1.31 730 1.78 1669 2.52 6708 0.63 2422 1.61 1082 2.77
51 2023-12-23 12595 1.60 768 1.56 1857 2.48 6415 0.78 2361 2.50 1194 2.85
52 2023-12-30 12822 1.77 709 2.26 2006 2.14 6814 0.98 2112 2.27 1181 4.49
1 2024-01-06 13432 2.20 812 1.85 2048 2.15 7012 1.07 2254 3.99 1229 5.78
2 2024-01-13 13213 1.65 924 1.41 1887 1.59 7144 0.62 2059 3.89 1126 4.26
3 2024-01-20 11425 2.20 704 1.56 1837 2.34 6103 1.23 1740 4.20 1003 4.79
4 2024-01-27 11027 2.11 834 1.92 1793 1.78 5679 1.13 1681 4.34 996 4.82
5 2024-02-03 11160 2.27 794 2.39 1831 2.46 5534 1.36 1880 2.87 1085 5.44
6 2024-02-10 10711 2.54 782 2.94 1830 2.62 5191 1.58 1908 2.62 969 7.12
7 2024-02-17 10322 2.88 619 2.91 1848 3.73 5334 2.12 1645 2.01 840 7.62

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 2023-09-02 5345 12.50 362 20.72 - - 3409 10.44 966 14.60 608 15.79
36 2023-09-09 5414 14.85 355 25.35 - - 3423 12.80 1119 16.80 516 17.05
37 2023-09-16 6331 18.29 401 23.69 - - 3887 16.08 1314 22.37 722 19.81
38 2023-09-23 6991 20.25 429 27.51 - - 4365 17.11 1428 25.14 747 24.63
39 2023-09-30 7478 18.51 401 26.43 - - 4948 15.74 1397 22.12 715 25.31
40 2023-10-07 7559 17.45 467 23.55 - - 4853 14.77 1515 20.99 706 23.80
41 2023-10-14 7762 15.74 491 23.01 - - 4915 13.77 1612 16.00 717 23.15
42 2023-10-21 8203 13.12 498 22.09 - - 5298 10.82 1680 13.51 695 22.16
43 2023-10-28 7976 12.53 474 16.03 - - 5227 9.95 1623 15.59 637 23.23
44 2023-11-04 8379 10.81 492 17.07 - - 5218 8.39 1910 12.15 736 20.52
45 2023-11-11 8308 10.70 467 16.70 - - 5244 8.68 1829 10.44 743 21.53
46 2023-11-18 8953 8.65 500 14.20 - - 5506 6.79 2156 8.44 779 18.87
47 2023-11-25 9175 7.54 620 11.94 - - 5716 5.86 1934 7.19 883 15.63
48 2023-12-02 9842 6.84 676 9.76 - - 5971 5.19 2200 6.64 959 15.43
49 2023-12-09 9693 6.00 668 6.74 - - 6041 4.50 2234 6.22 695 17.70
50 2023-12-16 11004 5.90 730 7.81 - - 6709 4.62 2435 4.97 1059 14.45
51 2023-12-23 10734 5.56 768 6.51 - - 6434 3.73 2378 5.89 1154 14.47
52 2023-12-30 10821 4.70 709 5.50 - - 6813 3.30 2154 4.83 1145 12.31
1 2024-01-06 11367 4.79 812 4.43 - - 7012 3.76 2269 5.51 1197 9.69
2 2024-01-13 11328 4.43 924 4.22 - - 7146 3.20 2096 5.06 1089 11.48
3 2024-01-20 9561 4.59 704 4.26 - - 6103 3.16 1748 6.41 968 10.02
4 2024-01-27 9213 4.37 834 4.68 - - 5679 3.12 1695 6.02 961 8.43
5 2024-02-03 9317 5.02 794 5.54 - - 5534 3.27 1918 7.66 1035 9.08
6 2024-02-10 8831 6.26 782 8.82 - - 5191 4.26 1909 7.54 918 12.42
7 2024-02-17 8426 6.18 619 6.30 - - 5334 4.22 1638 8.55 799 14.02

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 2023-09-02 5054 0.28 362 0.00 847 0.47 2230 0.13 1007 0.60 608 0.16
36 2023-09-09 5195 0.42 355 0.56 868 0.81 2285 0.09 1171 0.77 516 0.39
37 2023-09-16 6174 0.23 401 0.50 1053 0.47 2636 0.23 1362 0.00 722 0.14
38 2023-09-23 6796 0.46 429 0.00 1122 0.80 2995 0.40 1503 0.40 747 0.54
39 2023-09-30 7025 0.28 401 0.00 1117 0.45 3325 0.21 1467 0.48 715 0.14
40 2023-10-07 7305 0.26 467 0.21 1178 0.08 3390 0.18 1587 0.25 683 1.02
41 2023-10-14 7435 0.32 491 0.20 1094 0.73 3461 0.12 1672 0.60 717 0.14
42 2023-10-21 7696 0.17 498 0.20 1050 0.48 3707 0.05 1746 0.23 695 0.14
43 2023-10-28 7575 0.38 473 0.42 1065 0.38 3707 0.30 1693 0.53 637 0.47
44 2023-11-04 7747 0.37 476 0.21 1067 0.28 3508 0.43 1960 0.20 736 0.82
45 2023-11-11 7894 0.42 467 0.86 1187 0.51 3607 0.28 1890 0.37 743 0.81
46 2023-11-18 8669 0.65 500 0.20 1324 0.98 3838 0.42 2228 0.99 779 0.51
47 2023-11-25 8816 0.67 620 0.65 1357 0.96 3977 0.55 1979 0.61 883 0.91
48 2023-12-02 9652 0.77 676 0.74 1518 1.05 4242 0.42 2257 0.75 959 1.88
49 2023-12-09 9160 1.10 668 1.20 1523 1.64 4011 0.57 2263 1.28 695 2.30
50 2023-12-16 10457 1.47 730 0.41 1583 1.58 4617 1.47 2468 1.58 1059 1.79
51 2023-12-23 10481 1.77 768 1.30 1765 2.10 4389 1.66 2405 1.58 1154 2.43
52 2023-12-30 10332 2.48 709 1.55 1885 2.97 4427 2.48 2166 2.08 1145 2.97
1 2024-01-06 10904 3.07 812 2.96 1861 2.10 4722 3.37 2312 2.85 1197 3.93
2 2024-01-13 10897 3.20 924 3.03 1719 2.50 5030 3.14 2135 3.93 1089 3.31
3 2024-01-20 9524 3.90 704 5.11 1698 4.18 4360 3.78 1794 3.79 968 3.20
4 2024-01-27 9112 5.19 834 5.28 1640 5.49 3942 5.76 1735 4.27 961 3.95
5 2024-02-03 9137 5.10 794 4.79 1647 5.10 3717 6.27 1944 3.34 1035 4.44
6 2024-02-10 8768 6.80 782 5.37 1655 9.49 3456 7.00 1957 5.01 918 6.21
7 2024-02-17 8396 7.84 619 6.30 1682 8.09 3619 9.04 1677 6.20 799 6.51

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