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Respiratory Virus Report, Week 1 - ending January 6, 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 1 (week ending January 6, 2024) in Canada, participating RVDSS laboratories reported 6,901 detections of SARS-CoV-2 from 47,644 tests (14.5% positive). Among non-SARS-CoV-2 respiratory viruses, where test volumes are lower (range of 10,252 to 41,458 tests), activity of flu is highest, as is expected at this time of year.

  • National SARS-CoV-2 percent positivity has decreased over the most recent three surveillance weeks. Trends currently vary by region.
  • Activity of influenza decreased in week 1, but is within expected levels for this time of year (6,148 detections; 14.8% positive).
  • Activity of RSV is near expected levels for this time of year (2,567 detections; 7.0% positive).
  • Activity of all other non-SARS-CoV-2 respiratory viruses is low and near expected levels typical of this time of year.
  • 34/35 sentinel laboratories reported surveillance data

On this page

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

Respiratory virus detections

Table 1: Respiratory virus detections for the week ending January 6, 2024 (surveillance week 2024-01)
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 743 106 654 0 0 88 88 5 654 64 654 0 5 1 7 0 654 4 654 10 654 21 654 18
Prince Edward Island 372 26 320 0 0 103 103 0 320 18 16 0 0 0 0 0 16 0 16 0 16 5 16 0
Nova Scotia 1732 273 1523 0 0 190 190 6 1053 126 28 0 0 0 1 0 28 3 28 1 28 6 28 0
New Brunswick 1624 162 1635 92 2 265 359 4 1603 123 114 0 0 0 0 0 114 2 114 4 114 4 114 6
Atlantic 4471 567 4132 92 2 646 740 15 3630 331 812 0 5 1 8 0 812 9 812 15 812 36 812 24
Région Nord-Est 2537 316 2423 0 0 575 575 4 1142 70 104 0 0 2 0 0 104 2 104 1 N.C. N.C. 104 3
Québec-Chaudière-Appalaches 2431 407 2454 0 0 564 564 2 2378 231 877 0 0 0 0 0 878 22 877 14 N.C. N.C. 681 10
Centre-du-Québec 3153 588 781 0 0 110 110 0 775 45 24 0 0 1 0 0 24 1 24 1 N.C. N.C. 24 1
Montréal-Laval 3524 629 4014 0 0 514 514 12 2130 147 1001 3 0 7 0 0 1001 18 1003 26 N.C. N.C. 1001 22
Ouest du Québec 2055 417 1205 0 0 197 197 8 1194 77 22 0 0 0 0 0 22 0 22 1 N.C. N.C. 22 2
Montérégie 1899 393 2059 0 0 283 283 5 2024 121 3 0 0 0 0 0 3 0 3 0 N.C. N.C. 3 0
Province of Québec 15599 2750 12936 0 0 2243 2243 31 9643 691 2031 3 0 10 0 0 2032 43 2033 43 N.C. N.C. 1835 38
P.H.O.L. - Ottawa 321 112 266 36 1 11 37 0 266 6 202 0 0 0 0 3 202 0 202 4 202 10 202 6
EORLA 1299 169 761 0 0 126 126 9 761 28 59 0 0 1 1 0 59 0 59 2 59 10 59 4
P.H.O.L. - Kingston 223 56 149 20 1 11 22 1 149 9 106 0 0 0 0 2 106 0 106 0 106 3 106 4
UHN / Mount Sinai Hospital 1178 152 875 0 4 49 53 3 875 12 24 0 0 1 0 0 24 0 24 0 24 0 24 1
P.H.O.L. - Toronto 938 321 1626 132 192 21 173 8 1626 86 1467 0 0 0 0 45 1467 14 1467 26 1467 70 1467 71
Sick Kids Hospital - Toronto 129 14 110 7 6 0 13 1 110 12 110 0 1 1 0 0 110 2 110 2 110 10 110 2
Shared Hospital Laboratory 2279 208 1840 69 52 55 176 6 1843 39 1829 0 0 0 0 13 0 0 1831 9 1831 28 1831 43
P.H.O.L. - Sault Ste. Marie 45 13 59 14 0 7 17 0 59 7 41 0 0 0 0 0 41 0 41 0 41 1 41 0
P.H.O.L. - Timmins 27 7 37 2 1 3 5 0 37 8 32 0 0 0 0 0 32 0 32 1 32 0 32 0
St. Joseph's - London 1188 193 855 0 0 100 100 7 855 52 53 0 0 0 0 0 53 2 53 1 53 5 53 1
P.H.O.L. - London 635 195 406 52 20 5 55 1 406 25 320 0 0 0 0 5 320 0 320 5 320 16 320 13
P.H.O.L. - Orillia 39 9 78 16 1 3 20 0 78 4 78 0 0 0 0 4 78 2 78 1 78 6 78 2
P.H.O.L. - Thunder Bay 82 10 55 9 0 1 3 0 55 4 40 0 0 0 0 2 40 0 40 1 40 0 40 0
P.H.O.L. - Sudbury 20 1 25 4 0 0 4 0 25 0 23 0 0 0 0 1 23 0 23 0 23 1 23 0
P.H.O.L. - Hamilton 229 89 175 18 6 0 16 1 175 11 132 0 0 0 0 2 132 2 132 1 132 5 132 9
P.H.O.L. - Peterborough 89 25 98 66 62 0 10 2 98 6 84 0 0 0 0 3 84 3 84 3 84 5 84 3
St. Joseph's - Hamilton 2600 343 2290 0 0 308 308 14 2290 70 2290 0 0 26 0 0 2290 11 2290 19 2290 85 0 0
Sault Area Hospital 226 25 168 12 0 7 19 0 168 19 168 1 0 1 0 0 119 3 119 0 119 9 119 0
Province of Ontario 11547 1942 9873 457 346 707 1157 53 9876 398 7058 1 1 30 1 80 5180 39 7011 75 7011 264 4721 159
Manitoba 1943 194 1335 1 9 167 177 11 1335 100 133 0 0 0 0 0 133 4 156 6 133 13 156 4
Saskatchewan 2357 254 1819 0 0 124 124 36 1548 84 498 1 2 3 3 0 498 4 498 69 498 41 498 15
Alberta 6203 676 5855 561 41 36 638 80 5526 437 1317 3 1 12 0 0 1317 17 1277 0 1300 49 1317 36
Prairies 10503 1124 9009 562 50 327 939 127 8409 621 1948 4 3 15 3 0 1948 25 1931 75 1931 103 1971 55
British Columbia 5308 500 5337 245 20 2 778 21 5107 504 945 4 7 9 6 0 945 46 945 59 913 93 913 36
Yukon 64 15 52 3 0 0 10 0 52 6 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 N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.R. N.R. N.C. N.C.
Nunavut 152 3 119 0 1 33 34 0 119 16 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 216 18 171 3 1 33 44 0 171 22 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.R. N.R. N.C. N.C.
CANADA 47644 6901 41458 1359 419 3958 5901 247 36836 2567 12794 12 16 65 18 80 10917 162 12732 267 10667 496 10252 312

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 January 6, 2024 (surveillance weeks 2023-35 to 2024-01)
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 11217 2082 7910 0 0 585 585 17 7910 336 7910 7 38 10 80 0 7910 136 7910 77 7910 903 7910 53
Prince Edward Island 4311 598 1930 0 0 218 218 0 1930 71 248 0 0 0 8 0 247 12 237 0 247 84 231 1
Nova Scotia 28222 6680 15908 0 0 696 696 34 13735 844 657 15 2 1 10 0 657 33 650 3 657 183 656 0
New Brunswick 20077 2838 17483 521 7 1394 1922 8 17145 661 1506 7 4 0 22 0 1506 45 1506 10 1506 323 1506 26
Atlantic 63827 12198 43231 521 7 2893 3421 59 40720 1912 10321 29 44 11 120 0 10320 226 10303 90 10320 1493 10303 80
Région Nord-Est 33850 6007 27272 4 0 2302 2306 12 9653 654 1412 14 11 9 16 0 1412 66 1387 38 N.C. N.C. 1412 15
Québec-Chaudière-Appalaches 42306 8032 18797 0 0 1612 1612 22 18504 1564 7963 18 9 5 10 0 8230 336 7963 160 N.C. N.C. 7020 63
Centre-du-Québec 48475 10352 13428 0 0 744 744 10 10544 959 749 15 8 11 6 0 749 37 749 24 N.C. N.C. 771 11
Montréal-Laval 63580 11879 36596 1 1 2176 2178 30 27085 1940 14719 89 36 72 22 0 14719 299 14768 242 N.C. N.C. 14719 184
Ouest du Québec 34635 8596 12292 4 0 942 946 30 12208 793 397 10 3 2 6 0 397 30 397 7 N.C. N.C. 397 7
Montérégie 32278 6614 21255 0 0 1269 1269 26 20259 1083 116 1 0 0 1 0 116 3 116 1 N.C. N.C. 116 0
Province of Québec 255124 51480 129640 9 1 9045 9055 130 98253 6993 25356 147 67 99 61 0 25623 771 25380 472 N.C. N.C. 24435 280
P.H.O.L. - Ottawa 7171 2780 4565 182 33 39 166 2 4563 102 2729 0 0 0 0 35 2729 3 2727 25 2729 356 2727 35
EORLA 26578 3554 11126 0 0 878 878 37 11126 974 679 2 3 4 4 0 654 7 679 5 679 148 679 10
P.H.O.L. - Kingston 5191 1778 2691 53 8 14 61 1 2691 126 1957 0 0 0 0 37 1957 9 1957 0 1957 295 1957 5
UHN / Mount Sinai Hospital 21678 2305 12691 40 8 261 309 28 12691 147 474 0 0 5 1 0 474 1 474 0 474 18 474 4
P.H.O.L. - Toronto 12838 4419 20658 720 622 71 927 45 20657 760 18743 0 0 0 0 541 18749 214 18728 156 18743 2309 18728 247
Sick Kids Hospital - Toronto 2527 209 2194 77 68 20 165 3 2194 281 2194 14 12 23 16 0 2194 57 2194 27 2194 402 2194 28
Shared Hospital Laboratory 31593 3653 27562 467 326 121 914 36 27564 1155 27429 0 0 0 0 162 22886 229 27451 55 27496 1126 27473 148
P.H.O.L. - Sault Ste. Marie 262 170 258 19 0 7 21 0 258 15 173 0 0 0 0 1 173 1 173 0 173 18 173 0
P.H.O.L. - Timmins 661 210 572 26 5 4 26 0 572 50 471 0 0 0 0 14 471 4 471 1 471 42 471 0
St. Joseph's - London 17069 2764 6810 0 0 440 440 21 6810 585 1328 0 0 0 0 15 1345 20 1345 5 1345 175 1345 6
P.H.O.L. - London 9866 3384 6777 271 84 30 242 6 6775 365 5337 0 0 0 0 121 5337 30 5335 16 5337 600 5335 30
P.H.O.L. - Orillia 367 117 923 36 10 3 49 0 920 67 884 0 0 0 0 23 884 15 884 5 884 136 884 3
P.H.O.L. - Thunder Bay 1169 376 623 44 0 2 21 0 623 7 514 0 0 0 0 24 514 5 514 5 514 48 514 1
P.H.O.L. - Sudbury 426 202 465 10 0 0 10 0 463 9 320 0 0 0 0 6 321 1 320 0 320 40 320 1
P.H.O.L. - Hamilton 4860 1670 3773 68 37 13 86 4 3773 152 2790 0 0 0 0 77 2790 50 2789 28 2790 417 2789 35
P.H.O.L. - Peterborough 1547 591 1489 146 119 1 50 6 1489 202 1252 0 0 0 0 38 1252 28 1252 9 1252 233 1252 13
St. Joseph's - Hamilton 36981 4508 31891 0 0 1661 1661 93 31891 1483 31891 0 0 149 0 0 31891 214 31891 129 31891 2093 0 0
Sault Area Hospital 3480 495 2318 129 3 31 163 0 2311 91 1793 20 0 7 15 0 1744 27 1744 0 1744 199 1754 2
Province of Ontario 184264 33185 137386 2288 1323 3596 6189 282 137371 6571 100958 36 15 188 36 1094 96365 915 100928 466 100993 8655 69069 568
Manitoba 32280 5498 24266 6 111 1620 1737 48 24266 503 1752 0 6 6 40 0 1752 91 2331 43 1752 406 2331 25
Saskatchewan 43371 5583 28516 84 5 5164 5253 143 26113 559 8637 19 8 8 17 0 8637 191 8637 298 8637 977 8637 50
Alberta 109484 14909 89643 10737 470 517 11724 467 83259 3331 24831 92 72 108 3 0 24826 302 24404 11 24420 2543 24830 255
Prairies 185135 25990 142425 10827 586 7301 18714 658 133638 4393 35220 111 86 122 60 0 35215 584 35372 352 34809 3926 35798 330
British Columbia 70593 10449 68998 2863 371 71 5059 98 68073 3172 15790 97 126 72 134 0 15794 473 15679 323 15124 2749 15101 196
Yukon 1074 131 678 20 6 0 34 0 674 35 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 441 43 383 87 4 0 91 0 383 15 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 383 72 N.C. N.C.
Nunavut 2476 255 1643 0 24 420 444 0 1643 110 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 3991 429 2704 107 34 420 569 0 2700 160 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 383 72 N.C. N.C.
CANADA 762934 133731 524384 16615 2322 23326 43007 1227 480755 23201 187645 420 338 492 411 1094 183501 2982 187846 1705 161629 16895 154706 1454

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 15.33 15.53 18.17 7.93 0.09 33.97 3.30 20.32 0.53 0.07 0.01 12.58 0.23 4.04 7.32 10.59 6.72 17.80 7.89 10.97
1 2024-01-06 14.48 15.03 14.23 4.54 0.08 30.93 4.58 19.59 0.60 0.07 0.00 10.34 0.22 3.87 6.97 10.34 5.26 15.62 8.37 10.84
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 4.71 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 1.77 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 4.65 4.19 5.71 11.09 4.36 7.42 1.49 3.63 1.84 5.08 2.68 3.34 1.48 1.88 1.84 2.67 0.85 1.54 2.10 2.94 0.72 4.45 0.28 2.74 3.04 4.40 9.27 7.77 3.07 5.16

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 48311 16.83 4353 15.81 16682 22.12 11550 18.73 11473 9.91 3952 10.55 301 11.63
52 2023-12-30 46727 15.33 4234 14.67 15519 19.54 11528 17.68 10321 10.01 4931 8.64 194 6.19
1 2024-01-06 47644 14.48 4471 12.68 15599 17.63 11547 16.82 10503 10.70 5308 9.42 216 8.33

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 40907 16.78 0.45 3820 19.08 0.31 12090 15.38 0.12 9248 11.41 0.51 10786 21.65 0.90 4747 16.64 0.29 216 45.37 0.00
52 2023-12-30 41617 18.17 0.53 3874 20.99 0.36 12588 19.68 0.07 9835 15.06 0.63 9832 17.55 1.23 5347 18.91 0.24 141 38.30 0.00
1 2024-01-06 41458 14.23 0.60 4132 17.91 0.36 12936 17.34 0.24 9873 11.72 0.54 9009 10.42 1.41 5337 14.58 0.39 171 25.73 0.00

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 36059 7.27 3258 9.45 8774 9.14 9246 4.64 9953 6.38 4615 9.36 213 6.57
52 2023-12-30 37340 7.32 3431 8.57 9501 7.28 9834 4.62 9243 8.37 5191 9.50 140 18.57
1 2024-01-06 36836 6.97 3630 9.12 9643 7.17 9876 4.03 8409 7.38 5107 9.87 171 12.87

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 12648 1.35 768 1.56 1857 0.54 6423 1.46 2406 0.79 1194 3.02
52 2023-12-30 12867 1.35 709 1.55 2003 0.85 6814 1.29 2165 0.97 1176 3.15
1 2024-01-06 12794 1.49 812 1.72 2031 0.64 7058 1.60 1948 1.28 945 2.75

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 11971 1.55 768 1.82 1875 2.61 5728 0.89 2406 1.45 1194 3.02
52 2023-12-30 10854 1.76 709 2.12 2008 2.49 4797 0.81 2164 1.43 1176 4.76
1 2024-01-06 10917 1.48 812 1.11 2032 2.12 5180 0.75 1948 1.28 945 4.87

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 12597 1.60 768 1.56 1857 2.48 6417 0.78 2361 2.50 1194 2.85
52 2023-12-30 12815 1.77 709 2.26 2005 2.14 6814 0.98 2111 2.27 1176 4.51
1 2024-01-06 12732 2.10 812 1.85 2033 2.12 7011 1.07 1931 3.88 945 6.24

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 10736 5.56 768 6.51 - - 6436 3.73 2378 5.89 1154 14.47
52 2023-12-30 10814 4.71 709 5.50 - - 6813 3.30 2152 4.83 1140 12.37
1 2024-01-06 10667 4.65 812 4.43 - - 7011 3.77 1931 5.33 913 10.19

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 10483 1.78 768 1.30 1765 2.10 4391 1.69 2405 1.58 1154 2.43
52 2023-12-30 10322 2.48 709 1.55 1882 2.98 4427 2.48 2164 2.08 1140 2.98
1 2024-01-06 10252 3.04 812 2.96 1835 2.07 4721 3.37 1971 2.79 913 3.94

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