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Respiratory Virus Report, Week 8 - ending February 24, 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 8 (week ending February 24, 2024) in Canada, participating RVDSS laboratories reported 2,542 detections of SARS-CoV-2 from 33,570 tests (7.6% positive). Among non-SARS-CoV-2 respiratory viruses, where test volumes are lower (range of 8,094 to 32,760 tests), activity of influenza and human coronavirus are highest.

  • National SARS-CoV-2 percent positivity has been decreasing since mid-December 2023.
  • Activity of influenza A has decreased in recent weeks (2,648 detections; 8.1% positive) but remains higher than activity of influenza B which is currently increasing (998 detections; 3.0% positive).
  • Activity of RSV remains stable (1,276 detections; 4.5% positive).
  • Among other respiratory viruses, activity of human coronavirus is increasing and above expected levels for this time of year (672 detections; 8.3% positive).
  • 35/35 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 24, 2024 (surveillance week 2024-08)
Reporting Laboratory SARS-CoV-2 Tested SARS-CoV-2 Positive Flu Tested A(H1)pdm09 Positive A(H3) Positive A(UnS) Positive Total Flu A Positive Total Flu B Positive RSV Tested RSV Positive HPIV Tested HPIV 1 Positive HPIV 2 Positive HPIV 3 Positive HPIV 4 Positive Other HPIV Positive ADV Tested ADV Positive HMPV Tested HMPV Positive EV/RV Tested EV/RV Positive HCoV Tested HCoV Positive
Newfoundland 584 34 481 0 0 48 48 8 481 41 481 1 1 0 0 0 481 8 481 19 481 16 481 30
Prince Edward Island 181 19 170 0 0 11 11 7 170 23 9 0 0 0 0 0 9 2 9 0 9 1 9 3
Nova Scotia 1205 115 1097 0 0 121 121 11 898 32 38 0 0 0 0 0 38 0 38 0 38 1 38 3
New Brunswick 1128 87 1166 28 2 6 36 58 1166 99 104 0 0 0 1 0 104 3 104 6 104 19 104 10
Atlantic 3098 255 2914 28 2 186 216 84 2715 195 632 1 1 0 1 0 632 13 632 25 632 37 632 46
Région Nord-Est 1619 58 1751 0 0 182 182 80 815 74 101 0 1 0 0 0 101 5 99 1 N.C. N.C. 101 15
Québec-Chaudière-Appalaches 1578 73 1973 0 0 353 353 93 1837 76 673 1 0 4 0 0 682 12 673 22 N.C. N.C. 489 53
Centre-du-Québec 2356 106 2244 0 0 406 406 67 1082 65 43 0 0 0 0 0 43 1 43 1 N.C. N.C. 43 1
Montréal-Laval 2410 136 3303 1 1 359 361 35 1970 89 986 1 0 20 0 0 986 15 988 25 N.C. N.C. 986 94
Ouest du Québec 1432 92 874 0 0 124 124 14 866 30 10 0 0 1 1 0 10 2 10 1 N.C. N.C. 10 2
Montérégie 1532 93 1611 0 0 241 241 20 1608 39 8 0 0 0 0 0 8 0 8 0 N.C. N.C. 8 0
Province of Québec 10927 558 11756 1 1 1665 1667 309 8178 373 1821 2 1 25 1 0 1830 35 1821 50 N.C. N.C. 1637 165
P.H.O.L. - Ottawa 245 31 206 1 0 25 26 1 206 2 138 0 0 0 0 4 138 0 138 3 138 7 138 25
EORLA 939 67 540 0 0 56 56 22 540 9 39 0 0 1 0 0 39 2 39 4 39 8 39 7
P.H.O.L. - Kingston 191 8 98 4 0 15 19 0 98 0 58 0 0 0 0 0 58 0 58 1 58 4 58 11
UHN / Mount Sinai Hospital 1014 60 638 0 1 27 28 3 638 3 72 0 0 0 0 0 72 0 72 2 72 4 72 2
P.H.O.L. - Toronto 374 48 960 17 5 9 29 15 960 12 892 0 0 0 0 35 892 9 892 31 892 55 892 115
Sick Kids Hospital - Toronto 113 4 109 2 4 0 6 5 109 0 109 0 0 5 0 0 109 3 109 7 109 20 109 9
Shared Hospital Laboratory 1772 44 1434 29 14 18 61 39 1434 8 1433 0 0 0 0 11 1433 5 1432 23 1432 28 1432 37
P.H.O.L. - Sault Ste. Marie 23 0 32 3 0 0 3 0 32 0 17 0 0 0 0 1 17 0 17 0 17 0 17 5
P.H.O.L. - Timmins 47 19 60 1 0 1 2 0 60 0 45 0 0 0 0 4 45 0 45 0 45 0 45 7
St. Joseph's - London 809 61 703 0 0 57 57 23 703 8 60 0 0 0 0 1 60 1 60 1 60 11 60 6
P.H.O.L. - London 311 51 292 17 0 6 23 2 292 2 219 0 0 0 0 8 219 0 219 6 219 9 219 21
P.H.O.L. - Orillia 16 1 18 11 0 4 15 0 18 0 11 0 0 0 0 0 11 0 11 1 11 0 11 0
P.H.O.L. - Thunder Bay 34 6 32 2 0 0 2 1 32 4 21 0 0 0 0 1 21 0 21 2 21 0 21 1
P.H.O.L. - Sudbury 13 3 19 1 0 0 1 1 19 0 13 0 0 0 0 1 13 0 13 0 13 0 13 3
P.H.O.L. - Hamilton 144 22 162 4 0 3 7 4 162 0 129 0 0 0 0 3 129 5 129 6 129 10 129 13
P.H.O.L. - Peterborough 35 3 46 0 0 5 5 1 46 1 31 0 0 0 0 2 31 1 31 2 31 7 31 4
St. Joseph's - Hamilton 1787 73 1697 0 0 117 117 50 1697 18 1697 0 0 16 0 0 1697 14 1697 42 1697 89 0 0
Sault Area Hospital 211 50 144 0 2 0 2 2 144 15 121 0 0 0 0 0 121 1 121 3 121 3 121 11
Province of Ontario 8078 551 7190 92 26 343 459 169 7190 82 5105 0 0 22 0 71 5105 41 5104 134 5104 255 3407 277
Manitoba 1366 159 1028 0 0 14 14 22 1028 63 93 0 1 2 0 0 93 2 97 8 93 10 97 7
Saskatchewan 1769 164 1363 0 0 4 4 100 1205 109 462 1 0 8 0 0 462 1 462 30 462 37 462 36
Alberta 4180 350 4260 29 15 4 52 231 4040 237 1058 0 3 15 0 0 1058 9 982 1 1050 72 1058 70
Prairies 7315 673 6651 29 15 22 70 353 6273 409 1613 1 4 25 0 0 1613 12 1541 39 1605 119 1617 113
British Columbia 3869 476 4061 40 20 5 235 68 3893 170 835 3 1 16 2 0 835 27 835 71 801 94 801 71
Yukon 71 10 31 0 0 0 1 1 30 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 59 2 58 0 0 0 0 9 58 29 N.C. N.C. N.C. N.C. N.C. N.C. 58 0 58 0 58 7 N.C. N.C.
Nunavut 153 17 99 0 0 0 0 5 99 18 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 283 29 188 0 0 0 1 15 187 47 N.C. N.C. N.C. N.C. N.C. N.C. 58 0 58 0 58 7 N.C. N.C.
CANADA 33570 2542 32760 190 64 2221 2648 998 28436 1276 10006 7 7 88 4 71 10073 128 9991 319 8200 512 8094 672

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 24, 2024 (surveillance weeks 2023-35 to 2024-08)
Reporting Laboratory SARS-CoV-2 Tested SARS-CoV-2 Positive Flu Tested A(H1)pdm09 Positive A(H3) Positive A(UnS) Positive Total Flu A Positive Total Flu B Positive RSV Tested RSV Positive HPIV Tested HPIV 1 Positive HPIV 2 Positive HPIV 3 Positive HPIV 4 Positive Other HPIV Positive ADV Tested ADV Positive HMPV Tested HMPV Positive EV/RV Tested EV/RV Positive HCoV Tested HCoV Positive
Newfoundland 16620 2602 12045 0 0 1236 1236 48 12045 774 12045 10 56 22 98 0 12045 198 12045 176 12045 1021 12045 257
Prince Edward Island 5974 690 3487 0 0 500 500 23 3487 281 386 2 0 0 8 0 385 21 375 5 385 109 369 9
Nova Scotia 38371 7816 25126 0 0 2068 2068 201 20533 1257 899 15 2 2 10 0 899 39 892 3 899 203 898 5
New Brunswick 28419 3556 25954 829 22 1764 2615 178 25550 1520 2280 7 4 1 25 0 2280 88 2280 31 2280 457 2280 82
Atlantic 89384 14664 66612 829 22 5568 6419 450 61615 3832 15610 34 62 25 141 0 15609 346 15592 215 15609 1790 15592 353
Région Nord-Est 45591 6808 40042 5 0 4349 4354 152 15405 1149 1965 14 12 10 16 0 1965 87 1923 56 N.C. N.C. 1965 52
Québec-Chaudière-Appalaches 54608 9099 33130 0 0 4852 4852 262 31986 2296 12990 21 9 11 11 0 13351 433 12989 298 N.C. N.C. 10881 288
Centre-du-Québec 66722 12083 28643 0 0 3657 3657 192 18059 1408 1003 15 8 13 7 0 1003 50 1003 36 N.C. N.C. 1031 36
Montréal-Laval 81558 13566 61853 4 2 5641 5647 128 40797 2589 21606 93 38 123 24 0 21606 433 21667 386 N.C. N.C. 21606 633
Ouest du Québec 44706 9792 17953 4 0 1753 1757 96 17796 1002 503 11 3 7 7 0 503 39 503 11 N.C. N.C. 503 19
Montérégie 42543 7743 32550 0 0 2737 2737 87 31487 1574 172 1 0 0 1 0 172 6 172 3 N.C. N.C. 172 1
Province of Québec 335728 59091 214171 13 2 22989 23004 917 155530 10018 38239 155 70 164 66 0 38600 1048 38257 790 N.C. N.C. 36158 1029
P.H.O.L. - Ottawa 9394 3473 6289 259 53 139 328 13 6283 127 3726 0 0 0 0 62 3726 11 3724 45 3726 389 3724 126
EORLA 34818 4272 15743 0 0 1411 1411 122 15743 1086 1006 2 4 10 4 0 981 11 1006 13 1006 190 1006 24
P.H.O.L. - Kingston 6584 2009 3575 111 17 78 180 3 3575 166 2518 0 0 0 0 40 2518 10 2518 8 2518 315 2518 37
UHN / Mount Sinai Hospital 29403 2899 18111 40 10 489 539 51 18111 191 900 0 0 7 2 0 900 1 900 2 900 39 900 28
P.H.O.L. - Toronto 16575 5303 29208 1084 880 266 1589 120 29199 1004 26654 0 0 0 0 749 26661 301 26639 308 26654 2621 26639 984
Sick Kids Hospital - Toronto 3404 283 3022 99 93 20 212 21 3022 304 3022 14 12 50 18 0 3022 73 3022 58 3022 527 3022 83
Shared Hospital Laboratory 45176 4349 38503 745 495 254 1494 153 38508 1308 38335 0 0 0 0 228 32681 277 38370 139 38415 1300 38392 383
P.H.O.L. - Sault Ste. Marie 407 186 478 48 3 15 60 0 478 43 325 0 0 0 0 4 325 1 325 0 325 21 325 28
P.H.O.L. - Timmins 926 268 883 56 8 24 77 0 883 60 713 0 0 0 0 21 713 4 713 4 713 46 713 16
St. Joseph's - London 23380 3287 11728 0 0 873 873 89 11728 693 1722 0 0 0 0 19 1741 26 1741 11 1743 208 1741 42
P.H.O.L. - London 12571 3897 9098 414 125 101 465 32 9095 458 7257 0 0 0 0 185 7257 34 7255 50 7257 659 7255 207
P.H.O.L. - Orillia 510 137 1196 70 17 11 98 0 1193 74 1134 0 0 0 0 26 1134 15 1134 18 1134 144 1134 11
P.H.O.L. - Thunder Bay 1616 471 977 57 0 7 36 2 974 27 804 0 0 0 0 26 804 5 804 22 804 53 804 6
P.H.O.L. - Sudbury 608 238 713 31 1 19 51 1 711 21 482 0 0 0 0 7 483 1 482 1 482 43 482 8
P.H.O.L. - Hamilton 6401 2011 5135 129 62 78 215 21 5134 170 3794 0 0 0 0 108 3794 69 3793 56 3794 493 3793 149
P.H.O.L. - Peterborough 2024 663 2008 201 202 61 134 9 1998 217 1597 0 0 0 0 46 1597 35 1597 24 1597 265 1597 32
St. Joseph's - Hamilton 50542 5512 44449 0 0 2796 2796 290 44449 1699 44449 0 0 260 0 0 44449 276 44449 291 44449 2594 0 0
Sault Area Hospital 4950 699 3344 166 10 49 225 6 3337 183 2629 24 0 11 16 0 2580 32 2580 5 2580 238 2590 33
Province of Ontario 249289 39957 194460 3510 1976 6691 10783 933 194421 7831 141067 40 16 338 40 1521 135366 1182 141052 1055 141119 10145 96635 2197
Manitoba 43002 6486 32590 140 11 1784 1935 130 32590 1194 2446 0 10 12 41 0 2446 105 3156 108 2446 481 3156 72
Saskatchewan 56028 6787 38737 101 8 5300 5409 686 35160 1259 11945 25 9 30 20 0 11945 241 11945 642 11945 1206 11945 228
Alberta 144238 18264 123957 11585 661 574 12887 1417 115468 5467 34154 116 84 238 3 0 34146 412 33290 23 33617 3147 34153 666
Prairies 243268 31537 195284 11826 680 7658 20231 2233 183218 7920 48545 141 103 280 64 0 48537 758 48391 773 48008 4834 49254 966
British Columbia 100001 13825 100194 3856 637 230 7754 404 97942 5119 23077 110 156 155 158 0 23079 721 22964 743 22126 3490 22103 542
Yukon 1456 168 936 30 12 0 50 2 928 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 964 63 904 166 6 1 173 17 904 126 N.C. N.C. N.C. N.C. N.C. N.C. 705 33 705 7 904 117 N.C. N.C.
Nunavut 3241 288 2247 426 30 51 507 22 2247 277 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 5661 519 4087 622 48 52 730 41 4079 445 N.C. N.C. N.C. N.C. N.C. N.C. 705 33 705 7 904 117 N.C. N.C.
CANADA 1023331 159593 774808 20656 3365 43188 68921 4978 696805 35165 266538 480 407 962 469 1521 261896 4088 266961 3583 227766 20376 219742 5087

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 10.35 0.67 0.04 23.36 15.68 18.80 1.74 0.34 0.01 16.23 0.44 6.22 5.20 5.78 2.10 15.79 7.98 12.32
7 2024-02-17 8.12 11.79 9.40 0.57 0.02 24.22 15.48 18.53 2.18 0.29 0.00 17.02 0.35 6.56 4.47 5.13 2.16 15.53 8.42 11.89
8 2024-02-24 7.57 11.73 8.08 0.57 0.06 28.62 12.42 18.57 3.05 0.49 0.02 16.79 0.45 6.61 4.49 4.53 2.12 15.47 8.04 11.28
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 1.54 2.63 0.44 3.20 1.42 2.11 1.22 2.31 1.52 1.61 1.30 1.51 2.82 4.41 0.44 6.05 1.45 3.96 7.73 3.14 3.24 8.02 4.35 6.52
8 2024-02-24 6.24 9.55 6.31 8.35 5.20 6.94 1.77 2.55 0.73 3.21 1.31 2.25 1.27 2.86 1.85 2.00 1.38 1.66 3.19 4.29 0.53 5.74 1.19 4.19 8.30 3.07 3.67 8.29 4.21 6.61

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 34740 8.79 3499 8.80 10544 7.33 8519 8.48 8042 10.12 3940 10.74 196 7.14
7 2024-02-17 35102 8.12 3185 8.92 11071 6.64 8901 7.48 8022 9.22 3726 11.03 197 6.60
8 2024-02-24 33570 7.57 3098 8.23 10927 5.11 8078 6.82 7315 9.20 3869 12.30 283 10.25

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 34078 10.35 1.74 3230 12.38 1.98 11857 18.01 1.05 7402 7.23 1.50 7311 1.75 3.24 4119 7.99 1.24 159 0.00 3.14
7 2024-02-17 34019 9.40 2.18 2882 8.78 2.74 11969 16.60 1.53 7689 7.39 1.87 7328 1.56 3.58 4006 6.81 1.40 145 1.38 11.03
8 2024-02-24 32760 8.08 3.05 2914 7.41 2.88 11756 14.18 2.63 7190 6.38 2.35 6651 1.05 5.31 4061 5.79 1.67 188 0.53 7.98

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 29157 5.20 2949 10.07 7832 4.60 7404 1.62 6876 6.66 3937 6.27 159 20.75
7 2024-02-17 29130 4.47 2610 8.12 7972 4.55 7689 1.16 6868 5.96 3846 4.91 145 26.90
8 2024-02-24 28436 4.49 2715 7.18 8178 4.56 7190 1.14 6273 6.52 3893 4.37 187 25.13

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 10714 1.56 782 0.77 1832 0.49 5194 1.73 1937 1.55 969 3.30
7 2024-02-17 10731 1.54 619 1.29 1863 0.54 5369 1.42 1898 2.32 982 2.75
8 2024-02-24 10006 1.77 632 0.47 1821 1.59 5105 1.82 1613 1.86 835 2.63

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 10761 1.84 782 3.45 1852 2.59 5192 0.67 1935 1.45 969 5.88
7 2024-02-17 10779 1.22 619 1.29 1875 1.97 5369 0.60 1898 1.16 982 2.95
8 2024-02-24 10073 1.27 632 2.06 1830 1.91 5105 0.80 1613 0.74 835 3.23

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 10709 2.54 782 2.94 1828 2.63 5191 1.58 1908 2.62 969 7.12
7 2024-02-17 10757 2.82 619 2.91 1864 3.70 5376 2.14 1880 1.91 982 6.62
8 2024-02-24 9991 3.19 632 3.96 1821 2.75 5104 2.63 1541 2.53 835 8.50

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 8854 6.18 619 6.30 - - 5376 4.35 1882 8.29 941 12.01
8 2024-02-24 8200 6.24 632 5.85 - - 5104 5.00 1605 7.41 801 11.74

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 8766 6.80 782 5.37 1653 9.50 3456 7.00 1957 5.01 918 6.21
7 2024-02-17 8846 7.73 619 6.30 1700 8.12 3661 8.96 1925 6.39 941 5.95
8 2024-02-24 8094 8.30 632 7.28 1637 10.08 3407 8.13 1617 6.99 801 8.86

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