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Respiratory Virus Report, Week 6 - ending February 10, 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 6 (week ending February 10, 2024) in Canada, participating RVDSS laboratories reported 3,033 detections of SARS-CoV-2 from 34,561 tests (8.8% positive). Among non-SARS-CoV-2 respiratory viruses, where test volumes are lower (range of 8,310 to 32,439 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 (3,302 detections; 10.2% positive). Activity of influenza B has been increasing over the past 4 weeks but remains low (538 detections; 1.7% positive).
  • Activity of RSV is stable and remains below expected levels for this time of year (1,467 detections; 5.2% 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

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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 10, 2024 (surveillance week 2024-06)
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 757 69 588 0 0 104 104 4 588 72 588 0 2 2 2 0 588 10 588 13 588 14 588 27
Prince Edward Island 200 5 193 0 0 15 15 4 193 38 22 0 0 0 0 0 22 0 22 1 22 7 22 1
Nova Scotia 1368 133 1234 0 0 193 193 22 954 35 30 0 0 0 0 0 30 1 30 0 30 4 30 0
New Brunswick 1174 101 1215 39 0 49 88 34 1214 152 142 0 0 0 0 0 142 16 142 9 142 44 142 14
Atlantic 3499 308 3230 39 0 361 400 64 2949 297 782 0 2 2 2 0 782 27 782 23 782 69 782 42
Région Nord-Est 1572 99 1736 0 0 269 269 18 743 57 75 0 0 1 0 0 75 2 72 5 N.C. N.C. 75 7
Québec-Chaudière-Appalaches 1662 115 2103 0 0 513 513 34 1967 95 781 1 0 1 0 0 799 20 780 25 N.C. N.C. 599 42
Centre-du-Québec 2450 157 1451 0 0 328 328 11 928 44 33 0 0 0 0 0 33 1 33 1 N.C. N.C. 34 10
Montréal-Laval 2221 161 3403 0 0 498 498 15 1784 82 920 0 0 5 0 0 920 22 920 17 N.C. N.C. 920 90
Ouest du Québec 1316 118 686 0 0 100 100 10 673 21 17 0 0 1 0 0 17 2 17 0 N.C. N.C. 17 4
Montérégie 1328 123 1520 0 0 216 216 8 1511 50 7 0 0 0 0 0 7 1 7 0 N.C. N.C. 7 0
Province of Québec 10549 773 10899 0 0 1924 1924 96 7606 349 1833 1 0 8 0 0 1851 48 1829 48 N.C. N.C. 1652 153
P.H.O.L. - Ottawa 295 97 199 4 2 11 16 1 199 3 115 0 0 0 0 9 115 0 115 2 115 3 115 8
EORLA 1066 71 618 0 0 63 63 11 618 13 46 0 1 1 0 0 46 0 46 0 46 4 46 0
P.H.O.L. - Kingston 196 28 126 5 0 3 8 0 126 1 75 0 0 0 0 0 75 0 75 1 75 3 75 4
UHN / Mount Sinai Hospital 936 50 732 0 0 19 19 1 732 0 76 0 0 0 0 0 76 0 76 0 76 3 76 6
P.H.O.L. - Toronto 401 72 809 19 14 12 39 14 809 12 762 0 0 0 0 33 762 11 762 20 762 41 762 83
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 1835 58 1465 41 19 18 78 12 1468 18 1467 0 0 0 0 11 1465 7 1464 7 1464 38 1464 50
P.H.O.L. - Sault Ste. Marie 9 1 18 2 0 0 2 0 18 2 16 0 0 0 0 0 16 0 16 0 16 1 16 7
P.H.O.L. - Timmins 38 1 45 7 0 2 9 0 45 1 35 0 0 0 0 0 35 0 35 2 35 0 35 3
St. Joseph's - London 859 61 702 0 0 61 61 6 702 13 64 0 0 0 0 1 64 2 64 0 64 5 64 6
P.H.O.L. - London 354 58 318 22 7 17 45 3 318 10 278 0 0 0 0 9 278 1 278 3 278 4 278 40
P.H.O.L. - Orillia 23 4 38 2 1 1 4 0 38 1 35 0 0 0 0 1 35 0 35 7 35 0 35 0
P.H.O.L. - Thunder Bay 43 10 32 2 0 0 2 0 32 1 23 0 0 0 0 1 23 0 23 2 23 1 23 1
P.H.O.L. - Sudbury 55 12 58 4 1 8 13 0 58 1 28 0 0 0 0 0 28 0 28 0 28 0 28 1
P.H.O.L. - Hamilton 181 29 173 10 3 7 18 5 173 1 144 0 0 0 0 7 144 4 144 4 144 11 144 17
P.H.O.L. - Peterborough 51 11 65 2 0 5 7 0 64 4 49 0 0 0 0 0 49 1 49 3 49 3 49 4
St. Joseph's - Hamilton 1839 116 1735 0 0 150 150 53 1735 23 1735 0 0 11 0 0 1735 6 1735 26 1735 78 0 0
Sault Area Hospital 210 32 148 7 1 1 9 0 148 12 122 0 0 0 0 0 122 1 122 2 122 9 122 4
Province of Ontario 8391 711 7281 127 48 378 543 106 7283 116 5070 0 1 12 0 72 5068 33 5067 79 5067 204 3332 234
Manitoba 1483 159 1128 0 0 14 14 17 1128 103 104 0 0 0 0 0 104 0 124 11 104 14 124 7
Saskatchewan 1704 175 1282 0 0 18 18 61 1131 77 405 1 0 3 0 0 405 5 405 33 405 28 405 19
Alberta 4803 479 4472 55 23 4 87 142 4231 248 1205 4 0 17 0 0 1203 10 1166 0 1182 85 1205 63
Prairies 7990 813 6882 55 23 36 119 220 6490 428 1714 5 0 20 0 0 1712 15 1695 44 1691 127 1734 89
British Columbia 3936 414 3988 58 20 8 316 48 3805 247 861 4 6 16 3 0 861 56 861 65 810 102 810 55
Yukon 45 4 33 0 0 0 0 0 33 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 31 3 31 0 0 0 0 0 31 9 N.C. N.C. N.C. N.C. N.C. N.C. 31 3 31 0 31 5 N.C. N.C.
Nunavut 120 7 95 0 0 0 0 4 95 21 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 196 14 159 0 0 0 0 4 159 30 N.C. N.C. N.C. N.C. N.C. N.C. 31 3 31 0 31 5 N.C. N.C.
CANADA 34561 3033 32439 279 91 2707 3302 538 28292 1467 10260 10 9 58 5 72 10305 182 10265 259 8381 507 8310 573

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 10, 2024 (surveillance weeks 2023-35 to 2024-06)
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 15352 2505 11088 0 0 1131 1131 28 11088 687 11088 8 52 21 96 0 11088 185 11088 142 11088 988 11088 193
Prince Edward Island 5600 659 3137 0 0 472 472 11 3137 227 359 2 0 0 8 0 358 18 348 3 358 105 342 4
Nova Scotia 35981 7584 22930 0 0 1815 1815 175 18808 1195 819 15 2 1 10 0 819 39 812 3 819 199 818 1
New Brunswick 26168 3377 23661 783 18 1731 2532 73 23257 1316 2093 7 4 1 24 0 2093 83 2093 24 2093 422 2093 70
Atlantic 83101 14125 60816 783 18 5149 5950 287 56290 3425 14359 32 58 23 138 0 14358 325 14341 172 14358 1714 14341 268
Région Nord-Est 42386 6648 36632 5 0 3923 3928 45 13858 997 1785 14 11 10 16 0 1785 80 1746 53 N.C. N.C. 1785 30
Québec-Chaudière-Appalaches 51245 8904 29012 0 0 4035 4035 99 28157 2143 11625 20 9 7 10 0 11963 414 11624 245 N.C. N.C. 9861 200
Centre-du-Québec 61862 11843 22446 0 0 2379 2379 44 15815 1281 915 15 8 13 7 0 915 46 915 29 N.C. N.C. 943 32
Montréal-Laval 76685 13284 55034 2 1 4802 4805 79 36876 2415 19599 92 38 95 24 0 19599 394 19656 334 N.C. N.C. 19599 445
Ouest du Québec 41923 9565 15978 4 0 1457 1461 66 15837 930 479 11 3 5 6 0 479 36 479 9 N.C. N.C. 479 14
Montérégie 39634 7554 29432 0 0 2308 2308 52 28373 1488 154 1 0 0 1 0 154 6 154 1 N.C. N.C. 154 1
Province of Québec 313735 57798 188534 11 1 18904 18916 385 138916 9254 34557 153 69 130 64 0 34895 976 34574 671 N.C. N.C. 32821 722
P.H.O.L. - Ottawa 8952 3407 5913 250 53 113 293 8 5907 124 3478 0 0 0 0 55 3478 11 3476 39 3478 380 3476 82
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 6205 1987 3343 94 16 52 136 2 3343 164 2354 0 0 0 0 40 2354 10 2354 3 2354 307 2354 13
UHN / Mount Sinai Hospital 27309 2779 16726 40 8 438 486 40 16726 186 757 0 0 7 2 0 757 1 757 0 757 32 757 20
P.H.O.L. - Toronto 15760 5187 27289 1036 863 235 1501 87 27280 980 24850 0 0 0 0 680 24857 282 24835 251 24850 2531 24835 734
Sick Kids Hospital - Toronto 3025 260 2656 93 82 20 195 7 2656 300 2656 14 12 35 18 0 2656 65 2656 40 2656 467 2656 60
Shared Hospital Laboratory 41583 4234 35622 689 464 206 1359 88 35627 1289 35466 0 0 0 0 206 29812 264 35495 100 35540 1248 35517 310
P.H.O.L. - Sault Ste. Marie 338 185 397 39 3 11 47 0 397 41 282 0 0 0 0 3 282 1 282 0 282 21 282 9
P.H.O.L. - Timmins 847 244 784 53 8 21 71 0 784 59 641 0 0 0 0 14 641 4 641 4 641 45 641 7
St. Joseph's - London 21652 3162 10330 0 0 766 766 52 10330 680 1594 0 0 0 0 17 1613 25 1613 8 1615 189 1613 29
P.H.O.L. - London 11854 3806 8457 391 122 85 423 23 8454 448 6754 0 0 0 0 170 6754 34 6752 34 6754 629 6752 128
P.H.O.L. - Orillia 471 132 1137 56 17 7 80 0 1134 73 1084 0 0 0 0 26 1084 15 1084 12 1084 143 1084 9
P.H.O.L. - Thunder Bay 1517 445 902 55 0 7 34 1 899 21 740 0 0 0 0 25 740 5 740 19 740 53 740 3
P.H.O.L. - Sudbury 550 217 635 26 1 17 44 0 633 21 442 0 0 0 0 6 443 1 442 1 442 43 442 5
P.H.O.L. - Hamilton 6039 1947 4795 123 58 63 190 15 4794 169 3516 0 0 0 0 99 3516 63 3515 48 3516 477 3515 121
P.H.O.L. - Peterborough 1920 650 1879 200 201 38 110 7 1869 214 1519 0 0 0 0 44 1519 34 1519 21 1519 252 1519 27
St. Joseph's - Hamilton 46955 5355 41037 0 0 2550 2550 203 41037 1658 41037 0 0 240 0 0 41037 252 41037 214 41037 2420 0 0
Sault Area Hospital 4510 615 3046 161 8 48 217 4 3039 161 2376 23 0 10 16 0 2327 31 2327 2 2327 229 2337 11
Province of Ontario 232191 38729 179469 3306 1904 5948 9773 615 179430 7656 130478 39 16 301 40 1385 124777 1107 130457 803 130524 9639 89452 1584
Manitoba 40164 6167 30391 11 139 1904 2054 94 30391 1029 2278 0 9 7 41 0 2278 102 2957 95 2278 460 2957 57
Saskatchewan 52528 6476 35923 100 7 5278 5385 513 32668 1056 10965 23 9 19 20 0 10965 233 10965 576 10965 1125 10965 151
Alberta 135187 17481 114559 11494 620 567 12749 994 106632 4987 31568 110 79 189 3 0 31560 376 30835 21 31060 2957 31567 513
Prairies 227879 30124 180873 11605 766 7749 20188 1601 169691 7072 44811 133 97 215 64 0 44803 711 44757 692 44303 4542 45489 721
British Columbia 92402 12929 91996 3711 550 211 7233 277 90071 4760 21152 104 147 123 153 0 21154 664 21039 603 20276 3271 20253 413
Yukon 1333 152 871 30 12 0 49 1 864 41 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 869 61 810 166 6 1 173 1 810 79 N.C. N.C. N.C. N.C. N.C. N.C. 611 30 611 7 810 105 N.C. N.C.
Nunavut 2979 276 2073 0 28 458 486 7 2073 234 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 5181 489 3754 196 46 459 708 9 3747 354 N.C. N.C. N.C. N.C. N.C. N.C. 611 30 611 7 810 105 N.C. N.C.
CANADA 954489 154194 705442 19612 3285 38420 62768 3174 638145 32521 245357 461 387 792 459 1385 240598 3813 245779 2948 210271 19271 202356 3708

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 10.94 0.76 0.03 23.66 15.78 19.15 1.48 0.28 0.01 14.84 0.41 5.77 5.88 7.15 2.19 16.33 8.77 12.14
6 2024-02-10 8.78 11.88 10.18 0.67 0.04 23.36 15.68 18.80 1.66 0.34 0.01 16.23 0.44 6.22 5.19 5.78 2.10 15.79 7.98 12.32
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 6.05 9.97 3.86 9.89 6.16 6.98 1.50 2.68 0.51 2.89 1.57 2.19 1.77 2.14 1.44 1.74 1.25 1.51 2.52 3.73 0.42 5.57 0.65 3.48 6.90 2.64 3.01 8.57 3.48 6.75

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 36779 9.34 3908 8.75 10995 8.58 9019 9.75 8265 9.57 4420 10.63 172 5.81
6 2024-02-10 34561 8.78 3499 8.80 10549 7.33 8391 8.47 7990 10.18 3936 10.52 196 7.14

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 34688 10.94 1.48 3608 14.61 2.02 11082 18.72 0.57 7746 8.39 1.02 7492 1.90 3.15 4626 8.58 1.25 134 2.24 2.99
6 2024-02-10 32439 10.18 1.66 3230 12.38 1.98 10899 17.65 0.88 7281 7.46 1.46 6882 1.73 3.20 3988 7.92 1.20 159 0.00 2.52

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 30329 5.88 3235 9.52 7747 5.01 7744 2.12 7045 8.05 4426 7.32 132 23.48
6 2024-02-10 28292 5.19 2949 10.07 7606 4.59 7283 1.59 6490 6.59 3805 6.49 159 18.87

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 11188 1.45 794 1.26 1834 0.55 5542 1.66 1933 1.86 1085 1.29
6 2024-02-10 10260 1.50 782 0.77 1833 0.49 5070 1.68 1714 1.46 861 3.37

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 11232 1.62 794 2.90 1842 2.55 5542 0.74 1933 1.55 1085 3.59
6 2024-02-10 10305 1.77 782 3.45 1851 2.59 5068 0.65 1712 0.88 861 6.50

Positive human metapneumovirus (HMPV) tests

Figure 8: Positive human metapneumovirus (HMPV) tests (%) in Canada by region by surveillance week
Figure 8
Figure 8: Positive human metapneumovirus (HMPV) tests (%) in Canada by region by surveillance week
Week Week End Can Tests HMPV% Atl Tests HMPV% QC Tests HMPV% ON Tests HMPV% Pr Tests HMPV% BC Tests HMPV%
35 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 11169 2.27 794 2.39 1832 2.46 5542 1.35 1880 2.87 1085 5.44
6 2024-02-10 10265 2.52 782 2.94 1829 2.62 5067 1.56 1695 2.60 861 7.55

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 9325 5.02 794 5.54 - - 5542 3.27 1918 7.66 1035 9.08
6 2024-02-10 8381 6.05 782 8.82 - - 5067 4.03 1691 7.51 810 12.59

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 9146 5.10 794 4.79 1648 5.10 3725 6.26 1944 3.34 1035 4.44
6 2024-02-10 8310 6.90 782 5.37 1652 9.26 3332 7.02 1734 5.13 810 6.79

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