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Respiratory Virus Report, Week 18 - ending May 4, 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 18 (week ending May 4, 2024) in Canada, percent positivity is currently highest for enterovirus/rhinovirus among respiratory viruses under surveillance. The following results were reported from RVDSS laboratories:

  • After reaching a low in early-April 2024 (4.7% positive), national SARS-CoV-2 percent positivity is showing early signs of increase (1,759 detections; 6.5% positive). Trends currently vary by region.
  • Influenza percent positivity is decreasing (1,334 detections; 5.2% positive) as percent positivity has decreased in recent weeks for both influenza A (278 detections; 1.1% positive) and influenza B (1,056 detections; 4.1% positive).
  • RSV percent positivity is stable (293 detections; 1.3% positive).
  • Percent positivity of all other non-SARS-CoV-2 respiratory viruses is near expected levels typical of this time of year.
  • 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 May 4, 2024 (surveillance week 2024-18)
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 685 65 541 0 0 6 6 12 541 15 541 2 1 45 1 0 541 11 541 27 541 71 541 25
Prince Edward Island 168 7 146 0 0 0 0 5 146 1 26 0 0 4 1 0 26 3 26 5 26 8 26 1
Nova Scotia 1234 79 1198 0 0 35 35 37 1096 14 31 0 0 0 0 0 31 1 31 1 31 2 31 3
New Brunswick 846 24 848 5 1 0 6 30 848 5 113 1 0 16 1 0 113 2 113 0 113 15 113 11
Atlantic 2933 175 2733 5 1 41 47 84 2631 35 711 3 1 65 3 0 711 17 711 33 711 96 711 40
Région Nord-Est 1234 30 1264 0 0 4 4 160 676 21 86 0 0 8 1 0 86 4 82 2 N.C. N.C. 86 3
Québec-Chaudière-Appalaches 1290 59 1440 0 0 13 13 95 1382 36 657 0 0 22 0 0 679 17 656 41 N.C. N.C. 564 23
Centre-du-Québec 1499 46 1494 0 0 10 10 79 725 16 29 0 0 2 0 0 29 1 29 2 N.C. N.C. 29 0
Montréal-Laval 1503 43 2343 0 0 13 13 101 1288 25 754 1 0 53 0 0 754 19 755 37 N.C. N.C. 754 17
Ouest du Québec 899 28 570 0 0 10 10 28 562 11 14 0 0 1 0 0 14 0 14 0 N.C. N.C. 14 0
Montérégie 1113 54 1303 0 0 11 11 33 1301 49 5 0 0 0 0 0 5 0 5 0 N.C. N.C. 5 0
Province of Québec 7538 260 8414 0 0 61 61 496 5934 158 1545 1 0 86 1 0 1567 41 1541 82 N.C. N.C. 1452 43
P.H.O.L. - Ottawa 256 50 203 0 1 0 1 2 203 3 138 0 0 0 0 9 138 0 138 12 138 7 138 17
EORLA 744 30 451 0 0 2 2 15 451 6 46 0 0 0 0 0 46 1 46 1 46 9 46 2
P.H.O.L. - Kingston 168 33 77 3 0 0 0 0 77 0 55 0 0 0 0 9 55 0 55 1 55 9 55 4
UHN / Mount Sinai Hospital 874 38 588 0 0 3 3 3 588 3 106 0 0 3 0 0 106 0 106 5 106 3 106 9
P.H.O.L. - Toronto 279 56 740 3 4 3 9 4 739 0 724 0 0 0 0 80 724 5 724 50 724 74 724 66
Sick Kids Hospital - Toronto 91 0 89 0 1 0 1 4 89 1 89 0 0 9 0 0 89 3 89 3 89 31 89 4
Shared Hospital Laboratory 1357 69 999 4 4 1 9 18 999 3 1001 0 0 0 0 15 1001 8 1002 15 1002 38 1002 6
P.H.O.L. - Sault Ste. Marie 42 24 44 0 0 0 0 0 44 0 27 0 0 0 0 6 27 0 27 0 27 2 27 0
P.H.O.L. - Timmins 28 2 38 0 1 4 4 1 38 0 28 0 0 0 0 1 28 1 28 6 28 1 28 0
St. Joseph's - London 560 29 431 0 0 2 2 6 431 0 62 0 0 0 0 3 62 5 62 10 62 4 62 4
P.H.O.L. - London 268 37 272 1 1 1 2 5 272 1 226 0 0 0 0 19 226 2 226 26 226 18 226 17
P.H.O.L. - Orillia 17 0 14 0 0 0 0 0 14 0 13 0 0 0 0 3 13 0 13 4 13 1 13 0
P.H.O.L. - Thunder Bay 42 13 44 0 0 0 0 1 44 1 28 0 0 0 0 0 28 0 28 0 28 3 28 6
P.H.O.L. - Sudbury 5 0 8 0 0 0 0 0 8 0 6 0 0 0 0 1 6 0 6 0 6 1 6 0
P.H.O.L. - Hamilton 25 1 63 2 1 1 1 1 59 0 59 0 0 0 0 2 59 3 59 6 59 12 59 1
P.H.O.L. - Peterborough 73 17 88 2 0 1 3 2 88 2 47 0 0 0 0 2 47 0 47 1 47 7 47 7
St. Joseph's - Hamilton 1544 90 1472 0 0 26 26 37 1472 3 1472 0 0 82 0 0 1472 8 1472 46 1472 109 0 0
Sault Area Hospital 114 27 103 0 0 0 0 2 103 0 84 0 1 5 0 0 84 2 84 8 84 12 84 2
Province of Ontario 6487 516 5724 15 13 44 63 101 5719 23 4211 0 1 99 0 150 4211 38 4212 194 4212 341 2740 145
Manitoba 1147 74 913 0 2 13 15 50 913 9 91 0 0 7 0 0 91 1 87 3 91 17 87 1
Saskatchewan 1420 76 1047 0 0 5 5 71 868 14 367 1 0 37 2 0 367 1 367 3 367 44 367 14
Alberta 4199 289 4179 8 18 1 30 205 3985 24 1105 3 1 62 0 0 1105 8 1007 0 1096 101 1105 53
Prairies 6766 439 6139 8 20 19 50 326 5766 47 1563 4 1 106 2 0 1563 10 1461 6 1554 162 1559 68
British Columbia 3202 336 2366 19 16 0 57 43 2272 22 791 1 4 45 1 0 791 21 791 33 767 134 767 24
Yukon 34 6 22 0 0 0 0 2 22 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 18 0 18 0 0 0 0 2 18 1 N.C. N.C. N.C. N.C. N.C. N.C. 18 0 18 0 18 4 N.C. N.C.
Nunavut 187 27 153 0 0 0 0 2 153 7 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 239 33 193 0 0 0 0 6 193 8 N.C. N.C. N.C. N.C. N.C. N.C. 18 0 18 0 18 4 N.C. N.C.
CANADA 27165 1759 25569 47 50 165 278 1056 22515 293 8821 9 7 401 7 150 8861 127 8734 348 7262 737 7229 320

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 May 4, 2024 (surveillance weeks 2023-35 to 2024-18)
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 22262 3163 16460 0 0 1344 1344 160 16460 994 16460 22 76 179 108 0 16460 277 16460 420 16460 1352 16460 497
Prince Edward Island 7961 800 5321 0 0 542 542 237 5321 375 605 3 0 28 9 0 604 39 594 27 605 161 589 33
Nova Scotia 50938 8751 37357 0 0 2869 2869 599 30660 1474 1233 16 3 10 10 0 1233 44 1226 14 1233 241 1232 29
New Brunswick 38610 4027 36583 915 27 1906 2848 975 36179 1917 3341 10 4 75 34 0 3341 120 3341 107 3341 655 3341 141
Atlantic 119771 16741 95721 915 27 6661 7603 1971 88620 4760 21639 51 83 292 161 0 21638 480 21621 568 21639 2409 21622 700
Région Nord-Est 59065 7226 54567 5 0 4736 4741 1432 22330 1522 2885 17 12 51 19 0 2885 122 2808 129 N.C. N.C. 2885 142
Québec-Chaudière-Appalaches 67913 9512 49483 0 0 5597 5597 1967 47411 2861 19173 22 9 78 14 0 19750 581 19172 698 N.C. N.C. 15703 604
Centre-du-Québec 85008 12622 46157 0 0 4615 4615 1310 25987 1696 1267 15 8 29 7 0 1267 61 1267 58 N.C. N.C. 1299 48
Montréal-Laval 100700 14096 88629 5 2 6771 6778 1207 56166 3043 30025 97 44 469 25 0 30025 602 30106 841 N.C. N.C. 30025 1059
Ouest du Québec 55539 10138 24937 4 0 2141 2145 467 24694 1131 687 11 3 32 7 0 687 53 687 29 N.C. N.C. 687 29
Montérégie 54532 8172 46454 0 0 3280 3280 525 45368 1933 248 1 0 1 2 0 248 8 248 5 N.C. N.C. 248 3
Province of Québec 422757 61766 310227 14 2 27140 27156 6908 221956 12186 54285 163 76 660 74 0 54862 1427 54288 1760 N.C. N.C. 50847 1885
P.H.O.L. - Ottawa 11822 3935 8431 300 56 199 429 48 8425 158 5050 0 0 0 0 153 5050 13 5048 159 5050 457 5048 325
EORLA 43249 4626 20895 0 0 1632 1632 475 20895 1153 1427 3 5 38 4 0 1402 15 1427 39 1427 258 1427 48
P.H.O.L. - Kingston 8081 2212 4679 150 20 97 229 8 4679 168 3205 0 0 0 0 96 3205 12 3205 40 3205 346 3205 172
UHN / Mount Sinai Hospital 38035 3162 24309 41 10 574 625 93 24309 235 1788 0 0 29 2 0 1788 3 1788 22 1788 81 1788 56
P.H.O.L. - Toronto 20152 5632 38031 1216 927 366 1849 273 38021 1058 35017 0 0 0 0 1438 35025 414 35000 981 35017 3257 35000 1906
Sick Kids Hospital - Toronto 4453 319 4062 106 102 20 228 81 4062 314 4062 15 12 110 21 0 4062 108 4062 133 4062 807 4062 129
Shared Hospital Laboratory 60899 4720 50668 877 542 296 1715 478 50675 1350 50425 0 0 0 0 371 44771 364 50515 348 50533 1664 50537 563
P.H.O.L. - Sault Ste. Marie 562 234 697 55 3 17 69 3 697 46 477 0 0 0 0 18 477 1 477 0 477 29 477 47
P.H.O.L. - Timmins 1220 333 1279 67 11 37 103 13 1279 67 1020 0 0 0 0 32 1020 6 1020 20 1020 61 1020 55
St. Joseph's - London 30436 3569 17325 0 0 1003 1003 272 17311 738 2381 0 0 0 0 44 2400 45 2400 59 2402 263 2400 78
P.H.O.L. - London 15610 4263 11877 502 147 171 625 120 11874 478 9633 0 0 0 0 341 9633 45 9631 211 9633 826 9631 436
P.H.O.L. - Orillia 628 153 1292 73 17 11 101 1 1289 74 1221 0 0 0 0 34 1221 16 1221 24 1221 147 1221 27
P.H.O.L. - Thunder Bay 2036 554 1322 64 2 8 45 12 1319 32 1095 0 0 0 0 32 1095 6 1095 34 1095 66 1095 36
P.H.O.L. - Sudbury 812 243 986 45 1 23 69 2 984 26 710 0 0 0 0 27 711 2 710 14 710 65 710 66
P.H.O.L. - Hamilton 7248 2122 6123 155 68 99 260 42 6118 172 4645 0 0 0 0 155 4645 92 4644 133 4645 606 4644 222
P.H.O.L. - Peterborough 2614 732 2716 212 205 74 158 37 2706 224 2066 0 0 0 0 93 2066 41 2066 66 2066 321 2066 69
St. Joseph's - Hamilton 66709 6047 59880 0 0 3285 3285 941 59880 1799 59880 0 0 815 0 0 59880 383 59880 932 59880 3516 0 0
Sault Area Hospital 6392 867 4418 182 25 56 263 25 4411 205 3502 28 1 45 17 0 3453 42 3453 78 3453 311 3463 77
Province of Ontario 320958 43723 258990 4045 2136 7968 12688 2924 258934 8297 187604 46 18 1037 44 2834 181904 1608 187642 3293 187684 13081 127794 4312
Manitoba 56505 7662 42683 146 16 1917 2079 704 42683 1415 3383 5 11 52 44 0 3383 131 4154 169 3383 599 4154 153
Saskatchewan 71755 7641 50111 142 22 5438 5602 2130 44462 1726 16361 33 9 250 27 0 16361 295 16361 822 16361 1567 16361 503
Alberta 188924 20771 169001 11832 857 590 13351 4520 158225 6352 46694 157 94 903 3 0 46682 521 44864 36 45956 4245 46693 1330
Prairies 317184 36074 261795 12120 895 7945 21032 7354 245370 9493 66438 195 114 1205 74 0 66426 947 65379 1027 65700 6411 67208 1986
British Columbia 134217 17402 135706 4178 889 271 8974 1391 132354 6038 32344 126 192 566 192 0 32346 990 32231 1309 31108 4676 31085 997
Yukon 1858 187 1220 35 15 0 63 20 1211 47 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 1308 79 1245 167 7 1 175 62 1245 174 N.C. N.C. N.C. N.C. N.C. N.C. 1046 46 1046 11 1245 155 N.C. N.C.
Nunavut 5141 441 3775 433 34 52 519 233 3775 528 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 8307 707 6240 635 56 53 757 315 6231 749 N.C. N.C. N.C. N.C. N.C. N.C. 1046 46 1046 11 1245 155 N.C. N.C.
CANADA 1323194 176413 1068679 21907 4005 50038 78210 20863 953465 41523 362310 581 483 3760 545 2834 358222 5498 362207 7968 307376 26732 298556 9880

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 0.82 1.06 7.59 1.37 0.38 0.65
38 2023-09-23 18.60 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 19.59 14.44 0.51 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 0.64 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 0.49 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 1.16 5.47 0.03 5.19 0.68 2.59 0.10 0.03 0.02 0.55 0.06 0.23 3.25 6.76 8.11 2.16 0.55 1.41
44 2023-11-04 17.74 13.91 2.63 10.75 0.10 8.32 1.08 3.35 0.10 0.03 0.10 0.71 0.12 0.31 4.07 7.77 7.82 3.35 0.83 2.07
45 2023-11-11 18.17 12.43 4.93 16.19 0.07 9.83 1.18 4.19 0.14 0.04 0.06 0.97 0.22 0.44 5.12 7.68 7.03 4.43 1.29 2.71
46 2023-11-18 18.80 11.96 7.24 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 8.81 24.27 0.13 15.25 1.25 6.91 0.12 0.04 0.07 2.13 0.13 0.80 6.81 6.66 8.10 8.69 1.79 4.79
48 2023-12-02 18.03 12.12 11.62 24.04 0.19 18.07 0.76 9.40 0.26 0.03 0.15 3.18 0.08 1.20 6.99 6.87 8.92 9.47 3.11 6.08
49 2023-12-09 17.53 12.61 14.74 21.12 0.23 19.13 1.43 11.34 0.29 0.06 0.05 4.21 0.19 1.60 7.38 7.29 10.09 12.26 5.40 7.54
50 2023-12-16 17.78 13.10 15.32 17.31 0.23 26.42 1.97 13.93 0.36 0.06 0.02 7.50 0.15 2.48 7.26 8.61 10.78 13.19 6.42 8.55
51 2023-12-23 16.81 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 7.29 9.16 8.97 15.23 7.40 9.92
52 2023-12-30 15.35 15.53 18.18 7.93 0.09 33.97 3.30 20.32 0.52 0.07 0.01 12.58 0.23 4.04 7.41 10.59 6.72 17.80 7.89 10.97
1 2024-01-06 14.51 15.03 14.49 4.54 0.08 30.93 4.58 19.59 0.60 0.07 0.00 10.34 0.22 3.87 7.10 10.34 5.26 15.62 8.37 10.84
2 2024-01-13 13.03 13.38 11.16 2.21 0.11 26.80 5.46 19.11 0.56 0.05 0.01 11.01 0.29 3.91 6.26 9.07 4.32 14.05 7.45 10.24
3 2024-01-20 11.35 12.21 10.27 1.40 0.04 28.20 9.13 18.95 0.79 0.14 0.01 12.75 0.35 4.70 6.13 8.43 3.42 15.56 7.90 10.95
4 2024-01-27 10.19 11.30 11.10 0.91 0.05 27.01 12.34 18.82 1.08 0.14 0.00 12.74 0.41 5.17 5.85 7.96 2.33 15.88 8.38 11.89
5 2024-02-03 9.34 11.51 11.28 0.76 0.03 23.66 15.78 19.15 1.48 0.28 0.01 14.84 0.41 5.77 5.91 7.15 2.19 16.33 8.77 12.14
6 2024-02-10 8.79 11.88 10.37 0.67 0.04 23.36 15.68 18.80 1.74 0.34 0.01 16.23 0.44 6.22 5.21 5.78 2.10 15.79 7.98 12.32
7 2024-02-17 8.12 11.79 9.43 0.57 0.02 24.22 15.48 18.53 2.18 0.29 0.00 17.02 0.35 6.56 4.49 5.13 2.16 15.53 8.42 11.89
8 2024-02-24 7.49 11.73 8.01 0.57 0.06 28.62 12.42 18.57 3.17 0.49 0.02 16.79 0.45 6.61 4.78 4.53 2.12 15.47 8.04 11.28
9 2024-03-02 7.03 11.18 6.72 0.63 0.12 29.30 11.04 18.13 4.03 0.70 0.00 15.45 0.74 6.25 3.79 3.70 2.50 15.62 7.59 10.52
10 2024-03-09 6.24 11.41 5.55 0.63 0.16 29.65 8.51 16.84 5.12 0.77 0.00 14.86 0.81 6.42 3.64 2.80 3.10 14.97 6.92 9.92
11 2024-03-16 6.13 11.58 4.36 0.52 0.26 24.27 6.74 14.55 5.42 1.15 0.01 13.11 1.05 6.86 3.18 2.18 3.71 12.11 6.29 9.33
12 2024-03-23 5.17 11.28 3.30 0.59 0.86 20.91 5.51 12.68 5.82 1.29 0.00 11.53 1.51 7.43 2.49 1.98 3.79 10.70 6.46 8.59
13 2024-03-30 4.85 10.85 2.71 0.64 1.52 18.09 4.67 11.66 6.60 1.72 0.00 12.55 1.98 7.90 2.32 1.63 4.00 9.32 6.45 8.11
14 2024-04-06 4.72 10.91 2.28 0.38 2.48 24.10 3.21 11.23 6.76 1.84 0.01 13.12 2.14 7.89 2.08 1.33 4.05 8.09 6.06 6.91
15 2024-04-13 4.91 11.37 1.80 0.59 3.84 17.75 2.18 8.72 6.02 1.92 0.02 12.22 2.00 7.55 1.79 1.40 3.46 7.73 5.34 6.34
16 2024-04-20 4.81 10.93 1.35 0.52 6.98 13.67 2.13 6.80 4.97 1.86 0.01 11.94 2.56 7.68 1.68 1.31 2.97 6.64 4.40 5.65
17 2024-04-27 5.53 10.09 1.15 0.48 9.67 11.31 1.28 5.34 4.70 1.90 0.01 12.18 2.94 7.49 1.47 1.14 2.84 5.79 3.89 4.80
18 2024-05-04 6.48 9.85 1.09 0.50 11.28 8.04 0.89 3.95 4.13 1.82 0.01 10.20 2.65 6.31 1.30 0.87 2.34 4.86 2.84 3.85
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 1.52 2.18 1.15 2.85 1.42 1.87 0.39 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 18.52 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 12.52 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 10.83 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 1.45 1.99 1.63 2.68 2.02 2.42 0.60 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 8.64 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 0.79 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 7.62 4.88 18.54 20.84 12.15 16.09 1.55 3.63 7.04 7.00 2.36 4.72 1.90 1.89 1.94 2.95 1.83 2.35 1.00 1.78 1.01 2.02 0.09 0.90 0.65 3.24 3.90 3.26 0.37 1.25
48 2023-12-02 6.79 4.74 16.64 16.72 12.69 13.84 1.51 3.04 5.78 6.14 3.03 4.18 2.15 1.87 1.89 3.34 1.66 2.49 0.91 1.86 1.48 1.94 0.31 1.09 0.76 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 1.83 1.68 2.48 3.03 1.84 2.50 1.20 1.93 1.22 2.80 0.49 1.48 1.12 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 1.59 2.23 1.20 4.39 0.37 2.47 1.77 5.28 8.11 6.68 1.87 3.72
52 2023-12-30 4.71 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 1.76 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 4.80 4.19 5.71 11.09 4.36 7.42 1.48 3.63 1.84 5.08 2.68 3.34 1.48 1.88 1.84 2.67 0.85 1.54 2.20 2.94 0.72 4.45 0.28 2.74 3.06 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 1.64 2.61 0.38 4.76 0.42 2.69 3.19 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 3.89 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 6.21 9.55 6.31 8.35 5.20 6.94 1.84 2.55 0.73 3.21 1.31 2.25 1.30 2.86 1.85 2.00 1.38 1.66 3.15 4.29 0.53 5.74 1.19 4.19 8.28 3.07 3.67 8.29 4.21 6.61
9 2024-03-02 6.48 9.77 7.80 9.03 5.73 7.75 2.40 3.07 0.60 3.35 1.41 2.44 1.65 2.75 1.90 1.92 1.09 1.40 3.92 4.72 0.40 6.42 1.87 4.46 7.09 3.41 3.32 8.01 5.09 6.87
10 2024-03-09 6.52 9.42 8.24 10.16 5.53 8.08 2.74 2.77 0.68 4.18 1.19 2.69 1.31 2.79 1.98 2.23 1.50 1.78 4.57 5.05 0.51 6.74 2.26 4.94 6.84 3.71 3.86 8.34 4.28 6.99
11 2024-03-16 6.67 8.77 8.97 9.45 7.15 8.22 3.43 3.48 0.66 4.58 1.35 3.00 1.29 2.39 1.88 2.32 1.23 1.69 4.88 5.07 0.59 7.94 2.52 4.87 7.18 3.70 3.25 8.02 4.35 6.23
12 2024-03-23 6.63 9.31 9.52 10.26 8.58 9.63 4.10 2.98 1.05 4.95 1.26 3.33 1.42 2.60 1.71 2.13 1.82 1.96 4.63 5.40 0.77 6.69 3.65 5.35 6.79 4.50 4.38 6.99 3.95 5.67
13 2024-03-30 7.36 8.35 8.49 12.58 7.69 10.26 4.52 3.17 1.39 5.21 1.48 3.68 1.63 2.51 2.30 2.12 1.37 1.70 5.02 4.79 1.28 6.90 3.95 5.27 6.02 4.04 4.45 8.16 3.65 5.46
14 2024-04-06 7.54 8.95 9.25 13.59 8.46 12.00 4.52 3.45 1.18 6.26 1.67 4.30 1.58 2.56 1.74 2.31 1.50 1.86 5.14 4.61 1.45 7.70 4.14 5.99 6.77 4.51 4.24 7.79 3.84 4.86
15 2024-04-13 8.51 9.16 9.14 14.59 9.49 13.17 5.96 3.83 1.35 6.94 1.97 4.61 1.39 3.04 1.71 2.62 1.64 2.12 4.64 4.09 1.52 7.47 3.81 6.11 5.46 3.56 4.97 5.52 3.23 4.24
16 2024-04-20 9.50 8.67 8.20 16.10 10.84 13.77 5.48 3.89 2.19 7.88 1.97 5.20 1.53 2.79 1.84 3.21 1.85 2.32 5.17 3.93 2.18 7.16 3.71 6.04 4.92 3.64 4.91 4.99 3.51 4.32
17 2024-04-27 11.53 9.88 7.74 18.29 13.64 16.16 6.63 4.07 1.78 8.67 2.07 6.01 1.35 2.63 1.37 2.54 1.70 2.10 4.22 3.53 2.40 6.58 4.68 5.77 4.78 4.36 4.91 4.11 2.54 3.37
18 2024-05-04 10.15 10.97 7.41 20.03 12.54 16.39 6.51 4.84 2.07 8.21 3.19 5.80 1.43 3.57 1.32 2.89 1.43 2.24 3.98 3.15 2.55 6.37 3.14 5.22 4.43 3.42 4.80 4.00 2.36 3.10

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 18.60 2775 18.38 13455 20.48 8514 18.38 7969 14.23 3377 22.59 174 10.34
39 2023-09-30 40587 19.59 3126 22.65 15431 21.30 9291 17.86 8658 15.65 3895 23.59 186 12.90
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 38462 17.55 3583 20.74 12605 18.30 8426 15.27 9624 16.76 4047 19.13 177 14.69
42 2023-10-21 39350 17.78 3493 19.70 12590 18.63 9300 16.86 10040 17.16 3737 17.13 190 17.37
43 2023-10-28 37286 17.89 3095 17.74 12003 18.29 9276 19.35 9450 17.05 3262 14.87 200 17.50
44 2023-11-04 38183 17.74 2965 17.91 11975 18.42 9060 17.09 10341 18.12 3648 15.98 194 15.98
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 44713 18.03 3648 21.98 14100 22.18 11174 20.06 11903 12.58 3639 10.31 249 7.63
49 2023-12-09 46876 17.53 3654 20.17 14467 22.78 11644 18.67 12452 12.41 4272 10.30 387 6.98
50 2023-12-16 48215 17.78 4065 18.60 15835 23.97 12142 18.69 12089 11.16 3746 10.25 338 6.21
51 2023-12-23 48372 16.81 4353 15.81 16682 22.12 11548 18.73 11472 9.91 3952 10.55 365 9.86
52 2023-12-30 46997 15.35 4234 14.67 15739 19.65 11522 17.68 10314 9.95 4930 8.64 258 5.04
1 2024-01-06 48060 14.51 4471 12.68 15874 17.71 11545 16.83 10577 10.62 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 37089 10.19 3784 9.49 11052 9.79 9238 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 35098 8.12 3185 8.92 11071 6.64 8901 7.48 8021 9.21 3722 11.04 198 7.07
8 2024-02-24 34145 7.49 3098 8.23 10925 5.10 8077 6.82 7890 8.66 3872 12.45 283 10.25
9 2024-03-02 33779 7.03 2992 7.02 10468 4.88 8299 6.21 7831 8.42 3972 11.76 217 6.45
10 2024-03-09 32484 6.24 3112 7.42 9479 3.46 7884 4.67 7845 7.71 3860 12.31 304 6.25
11 2024-03-16 32416 6.13 3346 6.90 9376 3.03 7702 5.47 7795 7.36 3904 11.63 293 7.51
12 2024-03-23 30991 5.17 3206 7.74 8609 2.25 7772 4.26 7547 6.15 3552 9.80 305 5.25
13 2024-03-30 29569 4.85 2831 6.85 8537 2.69 6962 4.28 7517 4.98 3450 9.25 272 7.35
14 2024-04-06 29672 4.72 2964 6.01 8696 2.38 7100 4.63 7336 4.43 3303 10.54 273 5.13
15 2024-04-13 29332 4.91 3243 6.38 8694 2.29 6878 5.18 7260 5.33 2987 9.24 270 5.93
16 2024-04-20 27218 4.81 2970 6.50 7913 2.39 6469 4.61 6615 5.22 3017 9.02 234 5.56
17 2024-04-27 26670 5.53 2790 7.53 7721 3.55 6117 5.46 6834 5.27 2970 9.29 238 8.40
18 2024-05-04 27165 6.48 2933 5.97 7538 3.45 6487 7.95 6766 6.49 3202 10.49 239 13.81

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 14543 0.69 0.06 984 0.00 0.00 3339 0.24 0.15 4324 0.39 0.09 3654 0.57 0.00 2158 2.46 0.00 84 2.38 0.00
36 2023-09-09 15430 0.43 0.06 1047 0.00 0.00 3649 0.19 0.03 4455 0.31 0.09 4069 0.37 0.05 2117 1.46 0.09 93 0.00 0.00
37 2023-09-16 18035 0.48 0.03 1216 0.08 0.00 4174 0.41 0.07 5145 0.29 0.00 4705 0.40 0.04 2703 1.29 0.04 92 0.00 0.00
38 2023-09-23 20121 0.51 0.02 1388 0.07 0.00 4734 0.30 0.00 5652 0.21 0.05 5325 0.62 0.02 2928 1.47 0.00 94 0.00 0.00
39 2023-09-30 21530 0.51 0.09 1403 0.14 0.07 4847 0.21 0.08 6186 0.37 0.11 5371 0.48 0.11 3598 1.36 0.06 125 0.00 0.00
40 2023-10-07 23658 0.64 0.05 1775 0.34 0.00 5628 0.37 0.04 6456 0.31 0.00 5803 0.74 0.16 3878 1.60 0.05 118 0.00 0.00
41 2023-10-14 23208 0.49 0.03 1938 0.57 0.00 4978 0.22 0.06 6283 0.30 0.00 6067 0.73 0.05 3828 0.73 0.03 114 0.00 0.00
42 2023-10-21 24067 0.73 0.08 2029 0.69 0.05 5110 0.37 0.02 6834 0.47 0.07 6370 1.13 0.13 3599 1.06 0.11 125 0.00 0.00
43 2023-10-28 23268 1.16 0.10 1979 0.96 0.00 5450 0.64 0.11 6814 0.50 0.06 5872 2.33 0.17 3039 1.45 0.10 114 0.88 0.00
44 2023-11-04 25317 2.63 0.10 1914 1.25 0.05 5705 0.63 0.07 6996 0.51 0.06 6996 6.80 0.17 3562 2.58 0.11 144 2.08 0.00
45 2023-11-11 26520 4.93 0.14 2069 2.03 0.14 5970 0.84 0.07 7240 1.22 0.07 7656 12.87 0.26 3460 3.96 0.14 125 4.00 0.00
46 2023-11-18 28583 7.24 0.16 2219 3.11 0.09 6454 1.36 0.09 7797 2.68 0.15 8734 18.14 0.26 3258 3.59 0.12 121 2.48 0.00
47 2023-11-25 29879 8.81 0.12 2521 4.60 0.04 6561 2.04 0.06 8070 2.69 0.02 9078 21.15 0.28 3517 6.43 0.09 132 15.15 0.00
48 2023-12-02 32859 11.62 0.26 2743 4.89 0.11 7199 3.78 0.15 8447 4.45 0.17 10485 24.44 0.47 3836 10.79 0.21 149 38.93 0.00
49 2023-12-09 34573 14.74 0.29 2817 9.66 0.11 8141 7.14 0.12 8466 7.08 0.21 11298 26.93 0.57 3590 13.12 0.11 261 49.81 0.00
50 2023-12-16 38612 15.32 0.36 3363 12.73 0.09 10087 11.63 0.12 9265 8.47 0.41 11116 24.56 0.71 4496 14.23 0.16 285 56.49 0.00
51 2023-12-23 40839 16.78 0.45 3820 19.08 0.31 12090 15.38 0.12 9246 11.39 0.51 10656 21.67 0.91 4747 16.64 0.29 280 40.36 0.00
52 2023-12-30 42482 18.18 0.52 3874 20.99 0.36 13501 19.37 0.07 9830 15.02 0.63 9720 17.61 1.26 5352 18.89 0.24 205 46.34 0.00
1 2024-01-06 43260 14.49 0.60 4132 17.91 0.36 13858 17.30 0.22 9869 11.67 0.54 9519 11.29 1.45 5634 14.55 0.39 248 33.47 0.00
2 2024-01-13 40233 11.16 0.56 3864 15.79 0.31 12702 15.32 0.19 9980 9.08 0.59 8491 5.94 1.33 4963 9.83 0.32 233 15.88 0.43
3 2024-01-20 35213 10.27 0.79 3422 14.23 0.94 11099 14.72 0.36 8812 8.65 0.45 7343 4.09 2.07 4397 9.71 0.34 140 5.71 0.00
4 2024-01-27 35174 11.10 1.08 3461 14.59 1.36 11277 17.65 0.28 8274 8.87 0.59 7261 2.31 2.91 4722 10.67 0.87 179 2.79 0.00
5 2024-02-03 35522 11.28 1.48 3608 14.61 2.02 12036 19.09 0.61 7738 8.30 1.02 7380 1.91 3.20 4626 8.58 1.25 134 2.24 2.99
6 2024-02-10 33997 10.37 1.74 3230 12.38 1.98 11857 18.01 1.05 7402 7.23 1.50 7230 1.77 3.28 4119 7.99 1.24 159 0.00 3.14
7 2024-02-17 33917 9.43 2.18 2882 8.78 2.74 11966 16.61 1.53 7689 7.40 1.87 7229 1.58 3.62 4006 6.81 1.40 145 1.38 11.03
8 2024-02-24 33294 8.01 3.17 2914 7.41 2.88 11748 14.22 2.63 7189 6.37 2.35 7030 1.07 5.65 4225 5.80 1.82 188 0.53 9.57
9 2024-03-02 32543 6.72 4.03 2834 7.13 4.13 11373 10.92 4.28 7133 5.72 2.90 6806 1.59 5.80 4231 5.25 1.96 166 2.41 13.25
10 2024-03-09 31700 5.55 5.12 2826 7.01 6.37 10775 8.84 5.27 6873 4.89 4.09 6835 1.29 6.63 4160 4.33 2.81 231 2.16 9.96
11 2024-03-16 30555 4.36 5.42 3170 6.03 4.95 9835 6.05 5.63 6948 3.94 3.80 6297 1.46 8.15 4077 4.42 3.63 228 0.44 8.77
12 2024-03-23 30633 3.30 5.82 3097 4.91 5.97 9578 3.82 5.54 6960 3.30 3.39 6918 1.45 9.35 3820 4.08 3.46 260 3.08 19.62
13 2024-03-30 29850 2.71 6.60 2909 3.82 7.25 9561 3.50 6.66 6384 2.44 3.29 7087 1.30 10.50 3681 3.07 3.15 228 0.88 23.25
14 2024-04-06 30169 2.28 6.76 2945 2.51 7.13 9682 2.55 8.14 6699 2.70 3.43 7167 1.48 9.24 3455 2.26 3.01 221 0.45 20.81
15 2024-04-13 29480 1.80 6.02 3049 2.76 5.02 9725 1.96 7.98 6251 1.70 3.47 7115 1.14 7.45 3106 2.03 2.29 234 2.56 11.97
16 2024-04-20 27265 1.35 4.97 2878 2.50 4.66 8648 1.06 6.97 5976 1.59 2.34 6266 0.64 6.11 3306 2.06 2.48 191 0.00 7.33
17 2024-04-27 26772 1.15 4.70 2668 1.99 3.37 8476 0.79 6.50 5583 1.00 1.88 6698 0.58 6.32 3146 2.96 2.61 201 0.00 3.98
18 2024-05-04 25569 1.09 4.13 2733 1.72 3.07 8414 0.72 5.89 5724 1.10 1.76 6139 0.81 5.31 2366 2.41 1.82 193 0.00 3.11

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 13610 0.58 969 0.00 2540 1.14 4324 0.81 3535 0.20 2158 0.32 84 1.19
36 2023-09-09 14361 0.71 1047 0.57 2750 1.64 4455 0.88 3915 0.18 2101 0.24 93 0.00
37 2023-09-16 16808 0.82 1201 0.25 3181 1.67 5138 1.01 4494 0.38 2702 0.41 92 1.09
38 2023-09-23 18782 1.15 1381 1.30 3652 2.27 5652 1.43 5075 0.37 2928 0.51 94 0.00
39 2023-09-30 20217 1.14 1392 0.79 3788 2.38 6186 1.42 5128 0.43 3598 0.56 125 0.00
40 2023-10-07 22042 1.35 1761 0.28 4333 2.75 6456 1.95 5496 0.36 3878 0.72 118 0.00
41 2023-10-14 21748 1.80 1927 0.83 3897 3.70 6281 2.48 5701 0.63 3828 1.04 114 0.00
42 2023-10-21 22479 2.38 2015 0.69 3889 4.78 6834 3.72 6017 0.58 3599 1.25 125 0.00
43 2023-10-28 21745 3.25 1970 1.78 4234 6.24 6814 4.21 5574 1.22 3039 1.74 114 0.00
44 2023-11-04 23657 4.07 1904 2.15 4506 6.88 6997 5.80 6544 1.79 3562 2.36 144 2.78
45 2023-11-11 24764 5.12 2058 2.77 4680 7.97 7241 7.62 7201 2.14 3459 3.58 125 6.40
46 2023-11-18 26517 5.85 2195 2.41 4910 10.14 7796 7.91 8237 2.87 3258 4.27 121 7.44
47 2023-11-25 27491 6.81 2363 4.70 4975 11.82 8068 8.66 8508 3.24 3445 5.28 132 11.36
48 2023-12-02 30258 6.99 2549 5.88 5533 11.46 8447 8.49 9797 3.57 3783 6.66 149 8.72
49 2023-12-09 31232 7.38 2665 7.69 5930 11.11 8465 7.40 10436 4.53 3475 9.35 261 6.90
50 2023-12-16 34607 7.26 3004 8.46 7537 9.73 9261 5.99 10173 5.17 4347 9.50 285 10.53
51 2023-12-23 35988 7.29 3258 9.45 8774 9.14 9244 4.64 9820 6.47 4615 9.36 277 6.14
52 2023-12-30 37639 7.41 3431 8.57 9849 7.53 9829 4.62 9130 8.48 5196 9.49 204 15.69
1 2024-01-06 37934 7.10 3630 9.12 9953 7.31 9871 4.03 8828 7.56 5404 9.88 248 13.71
2 2024-01-13 35286 6.26 3383 9.16 9029 6.14 9975 3.27 7930 7.65 4737 7.81 232 17.67
3 2024-01-20 30827 6.13 2936 9.91 7837 5.82 8808 2.99 6892 8.21 4214 6.76 140 20.00
4 2024-01-27 30616 5.85 3067 10.01 7786 5.48 8260 2.62 6810 6.83 4514 7.35 179 24.02
5 2024-02-03 30446 5.91 3235 9.52 7985 5.07 7736 2.12 6932 8.18 4426 7.32 132 24.24
6 2024-02-10 29075 5.21 2949 10.07 7832 4.60 7404 1.62 6794 6.74 3937 6.27 159 20.75
7 2024-02-17 29028 4.49 2610 8.12 7969 4.56 7689 1.16 6769 6.04 3846 4.91 145 27.59
8 2024-02-24 28917 4.78 2715 7.18 8169 4.55 7189 1.14 6600 6.83 4057 5.57 187 29.41
9 2024-03-02 28626 3.79 2712 6.42 8150 3.99 7134 1.23 6368 4.35 4096 4.32 166 26.51
10 2024-03-09 27634 3.64 2700 6.52 7381 4.09 6873 0.89 6407 3.59 4043 3.96 230 33.91
11 2024-03-16 26585 3.18 3019 5.13 6559 3.58 6948 0.88 5896 3.43 3935 3.66 228 21.05
12 2024-03-23 26748 2.49 2944 3.53 6480 3.33 6961 0.49 6396 2.94 3707 2.81 260 7.69
13 2024-03-30 26067 2.32 2642 3.14 6609 3.78 6384 0.58 6649 2.20 3555 1.83 228 10.96
14 2024-04-06 26397 2.08 2685 2.76 6714 3.07 6704 0.69 6709 2.04 3364 2.02 221 8.60
15 2024-04-13 25526 1.79 2716 2.06 6642 2.57 6232 0.64 6679 1.99 3023 1.26 234 7.69
16 2024-04-20 23872 1.68 2470 1.74 6130 2.51 5976 0.67 5881 1.56 3224 1.67 191 8.90
17 2024-04-27 23420 1.47 2486 1.13 5839 2.60 5583 0.64 6282 1.26 3029 1.02 201 8.96
18 2024-05-04 22515 1.30 2631 1.33 5934 2.66 5719 0.40 5766 0.82 2272 0.97 193 4.15

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 8627 1.32 401 1.25 1117 1.88 4948 1.33 1415 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 9281 1.59 498 2.21 1050 1.52 5293 1.51 1707 1.46 733 2.18
43 2023-10-28 9085 1.21 474 1.48 1063 1.98 5223 0.96 1656 0.85 669 2.69
44 2023-11-04 9496 1.44 492 2.24 1067 2.06 5215 1.00 1938 1.24 784 3.57
45 2023-11-11 9826 1.65 467 2.78 1257 1.83 5242 1.11 2076 1.35 784 5.10
46 2023-11-18 10441 1.39 500 2.20 1426 1.33 5505 1.24 2191 0.87 819 3.42
47 2023-11-25 10872 1.55 620 1.77 1442 1.04 5708 1.47 2195 1.18 907 3.53
48 2023-12-02 11676 1.51 676 2.37 1587 1.32 5967 1.39 2463 1.10 983 2.95
49 2023-12-09 11621 1.39 668 1.65 1630 1.10 6040 1.44 2537 1.14 746 2.14
50 2023-12-16 12631 1.46 730 1.92 1664 0.72 6696 1.36 2459 1.46 1082 2.96
51 2023-12-23 12648 1.35 768 1.56 1857 0.54 6421 1.46 2408 0.79 1194 3.02
52 2023-12-30 12871 1.35 709 1.55 2004 0.85 6809 1.29 2168 0.97 1181 3.13
1 2024-01-06 13434 1.48 812 1.72 2046 0.59 7059 1.60 2288 1.18 1229 2.69
2 2024-01-13 13182 1.17 924 1.73 1882 0.53 7137 1.16 2111 1.09 1128 1.95
3 2024-01-20 11423 1.08 704 1.28 1843 0.49 6099 1.18 1774 1.13 1003 1.30
4 2024-01-27 11007 1.16 834 0.72 1793 0.28 5677 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 10455 1.84 632 0.47 1825 1.59 5114 1.82 1905 2.20 979 2.55
9 2024-03-02 10419 2.40 587 1.02 1800 1.11 5157 2.83 1793 2.90 1082 2.40
10 2024-03-09 9897 2.74 483 2.69 1681 1.84 4982 2.65 1749 3.66 1002 3.09
11 2024-03-16 9750 3.43 626 1.92 1433 1.88 5071 3.45 1624 4.99 996 3.92
12 2024-03-23 9990 4.10 592 3.21 1588 2.33 5076 4.10 1810 4.92 924 6.17
13 2024-03-30 9394 4.52 581 3.96 1540 3.70 4578 4.59 1768 4.69 927 5.61
14 2024-04-06 9666 4.52 597 4.69 1640 3.48 4695 4.35 1854 5.50 880 5.23
15 2024-04-13 9502 5.96 626 7.35 1621 4.32 4485 5.11 1927 8.46 843 6.88
16 2024-04-20 9022 5.48 568 7.75 1604 3.12 4271 5.64 1699 5.77 880 6.93
17 2024-04-27 8865 6.63 658 9.42 1590 5.09 4002 5.72 1817 7.87 798 9.15
18 2024-05-04 8821 6.51 711 10.13 1545 5.70 4211 5.94 1563 7.23 791 6.45

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 1.52 355 1.97 879 2.28 3420 0.82 1133 2.03 545 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 8614 1.15 401 1.00 1129 2.04 4923 0.69 1415 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 9286 1.43 498 1.20 1058 3.59 5292 0.76 1705 1.47 733 3.27
43 2023-10-28 9099 1.48 474 2.74 1077 3.62 5223 0.69 1656 1.63 669 2.99
44 2023-11-04 9514 1.76 492 2.03 1085 3.87 5215 1.04 1938 2.12 784 2.55
45 2023-11-11 9843 1.45 467 2.57 1274 2.98 5242 0.92 2076 1.64 784 1.40
46 2023-11-18 10452 2.03 500 4.60 1437 4.31 5505 0.94 2191 1.92 819 4.03
47 2023-11-25 10920 1.90 620 2.74 1461 3.97 5712 1.07 2194 1.50 911 3.84
48 2023-12-02 11737 2.15 676 3.25 1613 3.84 5967 1.36 2462 2.03 983 3.05
49 2023-12-09 11699 1.83 668 2.84 1652 3.75 6041 1.18 2537 1.26 746 3.62
50 2023-12-16 12719 2.00 730 2.19 1681 3.09 6696 1.78 2459 1.67 1082 2.40
51 2023-12-23 12035 1.55 768 1.82 1875 2.61 5726 0.89 2408 1.45 1194 3.02
52 2023-12-30 10983 1.76 709 2.12 2010 2.49 4852 0.80 2167 1.43 1181 4.74
1 2024-01-06 11675 1.48 812 1.11 2050 2.20 5219 0.75 2288 1.14 1229 4.15
2 2024-01-13 12078 1.25 924 1.52 1901 2.31 5943 0.59 2111 1.33 1126 2.49
3 2024-01-20 11461 1.11 704 1.56 1851 1.19 6091 0.64 1774 1.35 1003 2.89
4 2024-01-27 11062 1.56 834 2.88 1807 2.32 5675 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 10525 1.30 632 2.06 1837 2.01 5114 0.80 1905 0.89 979 2.96
9 2024-03-02 10484 1.65 587 4.26 1822 2.25 5157 1.01 1793 1.06 1082 2.87
10 2024-03-09 9989 1.31 483 1.86 1708 1.70 4982 0.78 1748 1.54 1002 2.30
11 2024-03-16 9808 1.29 626 1.44 1458 1.99 5072 0.79 1623 1.48 996 2.41
12 2024-03-23 10056 1.42 592 1.35 1614 1.49 5076 1.18 1809 1.00 924 3.46
13 2024-03-30 9442 1.63 581 2.07 1565 3.07 4578 0.87 1768 0.96 927 3.99
14 2024-04-06 9717 1.58 597 2.01 1657 3.02 4695 0.75 1853 1.03 880 4.20
15 2024-04-13 9547 1.39 626 2.08 1637 2.14 4485 1.11 1927 0.67 843 2.61
16 2024-04-20 9069 1.53 568 2.46 1623 2.28 4271 0.98 1699 1.12 880 2.95
17 2024-04-27 8904 1.35 658 2.28 1604 2.68 4002 0.75 1817 0.99 798 1.75
18 2024-05-04 8861 1.43 711 2.39 1567 2.62 4211 0.90 1563 0.64 791 2.65

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 0.39 355 0.28 867 1.38 3423 0.20 1164 0.26 545 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 8680 0.51 401 0.25 1118 0.89 4948 0.36 1467 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 9321 0.46 498 0.20 1050 1.33 5298 0.32 1742 0.17 733 1.09
43 2023-10-28 9083 0.46 474 0.63 1066 1.41 5200 0.31 1674 0.18 669 0.75
44 2023-11-04 9519 0.55 492 0.20 1070 1.96 5218 0.17 1955 0.61 784 1.15
45 2023-11-11 9825 0.60 467 0.21 1256 2.15 5244 0.21 2074 0.63 784 0.89
46 2023-11-18 10315 0.79 500 0.40 1426 2.38 5505 0.36 2180 0.37 704 2.56
47 2023-11-25 10920 1.00 620 0.97 1442 2.57 5715 0.44 2210 0.59 911 2.96
48 2023-12-02 11703 0.91 676 0.89 1585 2.33 5965 0.47 2458 0.49 983 2.34
49 2023-12-09 11654 1.20 668 1.20 1635 2.39 6037 0.61 2513 1.95 746 0.94
50 2023-12-16 12683 1.31 730 1.78 1669 2.52 6707 0.63 2424 1.61 1082 2.77
51 2023-12-23 12659 1.59 768 1.56 1857 2.48 6415 0.78 2361 2.50 1194 2.85
52 2023-12-30 12881 1.76 709 2.26 2006 2.14 6809 0.98 2112 2.27 1181 4.49
1 2024-01-06 13431 2.20 812 1.85 2048 2.15 7012 1.07 2253 3.99 1229 5.78
2 2024-01-13 13207 1.64 924 1.41 1887 1.59 7144 0.62 2053 3.85 1126 4.26
3 2024-01-20 11426 2.20 704 1.56 1837 2.34 6103 1.23 1741 4.19 1003 4.79
4 2024-01-27 11026 2.11 834 1.92 1793 1.78 5678 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 10425 3.15 632 3.96 1825 2.79 5113 2.62 1818 2.31 979 7.76
9 2024-03-02 10398 3.92 587 3.75 1802 4.99 5157 3.37 1727 2.49 1082 7.30
10 2024-03-09 9915 4.57 483 5.38 1677 5.66 4991 4.49 1696 1.83 1002 7.58
11 2024-03-16 9742 4.88 626 7.67 1433 5.65 5084 4.76 1570 2.04 996 7.13
12 2024-03-23 9948 4.63 592 5.57 1589 5.48 5085 4.90 1717 1.75 924 6.71
13 2024-03-30 9329 5.02 581 7.40 1536 6.90 4589 4.73 1673 1.61 927 8.09
14 2024-04-06 9626 5.14 597 7.54 1639 7.02 4699 5.60 1776 1.35 880 5.34
15 2024-04-13 9417 4.64 626 5.43 1615 5.76 4489 5.57 1815 0.94 843 5.10
16 2024-04-20 8934 5.17 568 6.16 1605 7.60 4271 5.85 1582 1.14 880 4.20
17 2024-04-27 8777 4.22 658 5.17 1590 6.16 4004 4.37 1702 1.41 798 4.76
18 2024-05-04 8734 3.98 711 4.64 1541 5.32 4212 4.61 1461 0.41 791 4.17

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 7479 18.52 401 26.43 - - 4948 15.74 1398 22.17 715 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 8204 13.12 498 22.09 - - 5298 10.82 1681 13.50 695 22.16
43 2023-10-28 7977 12.52 474 16.03 - - 5227 9.95 1624 15.58 637 23.23
44 2023-11-04 8385 10.83 492 17.07 - - 5218 8.39 1916 12.21 736 20.52
45 2023-11-11 8530 10.70 467 16.70 - - 5244 8.68 2051 10.48 743 21.53
46 2023-11-18 8958 8.64 500 14.20 - - 5506 6.79 2161 8.42 779 18.87
47 2023-11-25 9427 7.62 620 11.94 - - 5716 5.86 2186 7.55 883 15.63
48 2023-12-02 10068 6.79 676 9.76 - - 5970 5.19 2427 6.47 959 15.43
49 2023-12-09 9980 6.00 668 6.74 - - 6046 4.50 2516 6.20 695 17.70
50 2023-12-16 11005 5.90 730 7.81 - - 6708 4.62 2437 4.97 1059 14.45
51 2023-12-23 10800 5.56 768 6.51 - - 6434 3.73 2380 5.88 1154 14.47
52 2023-12-30 10881 4.71 709 5.50 - - 6808 3.30 2155 4.83 1145 12.31
1 2024-01-06 11366 4.80 812 4.43 - - 7012 3.76 2268 5.51 1197 9.69
2 2024-01-13 11322 4.43 924 4.22 - - 7146 3.20 2090 5.07 1089 11.48
3 2024-01-20 9564 4.59 704 4.26 - - 6103 3.16 1751 6.40 968 10.02
4 2024-01-27 9212 4.37 834 4.68 - - 5678 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 8644 6.21 632 5.85 - - 5113 4.99 1896 7.23 945 10.69
9 2024-03-02 8601 6.48 587 6.30 - - 5157 4.65 1773 7.61 1041 13.74
10 2024-03-09 8230 6.52 483 9.11 - - 4991 4.81 1734 7.55 956 12.45
11 2024-03-16 8300 6.67 626 6.55 - - 5084 5.39 1593 7.34 964 12.03
12 2024-03-23 8413 6.63 592 7.26 - - 5085 5.45 1795 7.30 900 11.56
13 2024-03-30 7851 7.36 581 8.61 - - 4589 5.14 1747 9.90 911 12.84
14 2024-04-06 8012 7.54 598 10.54 - - 4699 6.11 1828 8.97 852 9.98
15 2024-04-13 7830 8.51 626 11.98 - - 4462 6.99 1904 9.93 809 10.63
16 2024-04-20 7409 9.50 568 11.62 - - 4273 7.79 1676 9.43 864 16.32
17 2024-04-27 7261 11.53 658 15.81 - - 4004 9.89 1800 11.11 774 17.31
18 2024-05-04 7262 10.15 711 13.50 - - 4212 8.10 1554 10.42 767 17.47

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 7026 0.28 401 0.00 1117 0.45 3325 0.21 1468 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 7697 0.17 498 0.20 1050 0.48 3707 0.05 1747 0.23 695 0.14
43 2023-10-28 7576 0.38 473 0.42 1065 0.38 3707 0.30 1694 0.53 637 0.47
44 2023-11-04 7754 0.37 476 0.21 1067 0.28 3508 0.43 1967 0.20 736 0.82
45 2023-11-11 8119 0.42 467 0.86 1187 0.51 3607 0.28 2115 0.38 743 0.81
46 2023-11-18 8674 0.65 500 0.20 1324 0.98 3838 0.42 2233 0.99 779 0.51
47 2023-11-25 9069 0.65 620 0.65 1357 0.96 3977 0.55 2232 0.54 883 0.91
48 2023-12-02 9880 0.76 676 0.74 1518 1.05 4241 0.42 2486 0.72 959 1.88
49 2023-12-09 9440 1.12 668 1.20 1523 1.64 4007 0.57 2547 1.33 695 2.30
50 2023-12-16 10458 1.47 730 0.41 1583 1.58 4616 1.47 2470 1.58 1059 1.79
51 2023-12-23 10483 1.77 768 1.30 1765 2.10 4389 1.66 2407 1.58 1154 2.43
52 2023-12-30 10328 2.48 709 1.55 1885 2.97 4422 2.49 2167 2.08 1145 2.97
1 2024-01-06 10903 3.06 812 2.96 1861 2.10 4722 3.37 2311 2.81 1197 3.93
2 2024-01-13 10891 3.19 924 3.03 1719 2.50 5030 3.14 2129 3.85 1089 3.31
3 2024-01-20 9527 3.89 704 5.11 1698 4.18 4360 3.78 1797 3.78 968 3.20
4 2024-01-27 9111 5.19 834 5.28 1640 5.49 3941 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 8546 8.28 632 7.28 1644 10.28 3416 8.17 1909 7.02 945 8.47
9 2024-03-02 8590 7.09 587 6.47 1643 7.49 3511 8.32 1808 5.53 1041 5.38
10 2024-03-09 8072 6.84 483 4.97 1522 6.96 3342 8.02 1769 5.48 956 5.96
11 2024-03-16 8007 7.18 626 4.95 1287 7.30 3476 8.20 1654 6.83 964 5.39
12 2024-03-23 8202 6.79 592 6.08 1455 6.19 3452 7.42 1803 6.60 900 6.22
13 2024-03-30 7797 6.02 581 6.54 1418 5.92 3111 6.49 1776 5.01 911 6.15
14 2024-04-06 7932 6.77 598 7.19 1495 6.29 3134 6.83 1853 7.12 852 6.34
15 2024-04-13 7843 5.46 626 4.31 1508 5.57 2974 6.22 1926 4.67 809 5.19
16 2024-04-20 7391 4.92 568 6.34 1452 4.41 2807 5.20 1700 5.18 864 3.47
17 2024-04-27 7302 4.78 658 5.17 1450 4.83 2603 4.61 1817 5.83 774 2.45
18 2024-05-04 7229 4.43 711 5.63 1452 2.96 2740 5.29 1559 4.36 767 3.13

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