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Respiratory Virus Report, Week 2 - ending January 13, 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 2 (week ending January 13, 2024) in Canada, participating RVDSS laboratories reported 5,734 detections of SARS-CoV-2 from 44,057 tests (13.0% positive). Among non-SARS-CoV-2 respiratory viruses, where test volumes are lower (range of 10,144 to 39,214 tests), activity of flu is highest but decreasing.

  • National SARS-CoV-2 percent positivity has decreased over the most recent four surveillance weeks. Trends currently vary by region.
  • Activity of influenza decreased for the second straight week, but remains within expected levels for this time of year (4,622 detections; 11.8% positive).
  • Activity of RSV is slightly below expected levels for this time of year (2,134 detections; 6.2% positive).
  • Activity of all other non-SARS-CoV-2 respiratory viruses is low and near expected levels typical of this time of year.
  • 34/35 sentinel laboratories reported surveillance data

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 13, 2024 (surveillance week 2024-02)
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 974 146 752 0 0 107 107 0 752 88 752 1 4 4 7 0 752 9 752 13 752 23 752 24
Prince Edward Island 330 17 294 0 0 90 90 0 294 21 22 0 0 0 0 0 22 1 22 0 22 3 22 0
Nova Scotia 1684 235 1465 0 0 191 191 10 1010 93 41 0 0 0 0 0 41 2 41 0 41 3 41 0
New Brunswick 1345 121 1353 49 4 169 222 2 1327 108 109 0 0 0 0 0 109 2 109 0 109 10 109 4
Atlantic 4333 519 3864 49 4 557 610 12 3383 310 924 1 4 4 7 0 924 14 924 13 924 39 924 28
Région Nord-Est 2114 205 2143 1 0 428 429 2 968 69 67 0 0 0 0 0 67 4 67 3 N.C. N.C. 67 2
Québec-Chaudière-Appalaches 1998 275 2272 0 0 462 462 5 2159 153 792 0 0 1 0 0 809 13 794 14 N.C. N.C. 618 12
Centre-du-Québec 3033 500 1586 0 0 211 211 3 1012 53 25 0 0 1 1 0 25 2 25 0 N.C. N.C. 26 0
Montréal-Laval 3242 501 3889 1 0 485 486 7 2113 128 968 1 1 4 0 0 968 22 971 13 N.C. N.C. 968 28
Ouest du Québec 1736 279 856 0 0 109 109 4 847 33 20 1 0 0 0 0 20 3 20 0 N.C. N.C. 20 0
Montérégie 1767 292 1882 0 0 222 222 3 1851 114 9 0 0 0 0 0 9 0 9 0 N.C. N.C. 9 0
Province of Québec 13890 2052 12628 2 0 1917 1919 24 8950 550 1881 2 1 6 1 0 1898 44 1886 30 N.C. N.C. 1708 42
P.H.O.L. - Ottawa 413 120 280 36 11 16 36 1 280 7 181 0 0 0 0 6 181 2 181 3 181 5 181 6
EORLA 1565 178 857 0 0 102 102 7 857 37 61 0 0 1 0 0 61 0 61 1 61 3 61 0
P.H.O.L. - Kingston 217 48 127 15 6 9 24 0 127 4 98 0 0 0 0 2 98 1 98 0 98 2 98 1
UHN / Mount Sinai Hospital 1220 125 844 0 0 51 51 7 844 6 20 0 0 0 0 0 20 0 20 0 20 1 20 0
P.H.O.L. - Toronto 847 245 1975 120 117 25 181 7 1973 76 1819 0 0 0 0 32 1820 14 1819 16 1819 63 1819 101
Sick Kids Hospital - Toronto 131 18 118 5 5 0 10 2 118 6 118 0 0 3 1 0 118 2 118 1 118 13 118 4
Shared Hospital Laboratory 2308 187 1828 34 53 14 101 10 1828 40 1818 0 0 0 0 6 0 0 1823 5 1823 21 1823 27
P.H.O.L. - Sault Ste. Marie 19 3 38 10 0 1 11 0 38 6 36 0 0 0 0 0 36 0 36 0 36 1 36 0
P.H.O.L. - Timmins 37 9 41 3 1 3 5 0 41 3 37 0 0 0 0 0 37 0 37 0 37 1 37 0
St. Joseph's - London 1037 135 764 0 0 68 68 6 764 29 49 0 0 0 0 1 51 0 51 1 51 1 51 1
P.H.O.L. - London 463 125 380 30 18 7 37 4 380 17 319 0 0 0 0 5 319 1 319 2 319 11 319 9
P.H.O.L. - Orillia 37 4 63 7 3 1 11 0 63 1 61 0 0 0 0 2 61 0 61 0 61 2 61 1
P.H.O.L. - Thunder Bay 95 22 76 3 0 1 3 0 75 3 44 0 0 0 0 0 44 0 44 0 44 1 44 0
P.H.O.L. - Sudbury 19 1 29 0 0 0 0 0 29 5 25 0 0 0 0 0 25 0 25 0 25 2 25 1
P.H.O.L. - Hamilton 301 84 243 19 10 9 26 1 243 8 160 0 0 0 0 2 160 0 160 4 160 21 160 5
P.H.O.L. - Peterborough 59 14 68 32 39 0 12 0 66 5 58 0 0 0 0 0 58 3 58 0 58 2 58 2
St. Joseph's - Hamilton 2386 282 2114 0 0 223 223 14 2114 60 2114 0 0 20 0 0 2114 9 2114 10 2114 76 0 0
Sault Area Hospital 201 21 145 7 1 7 15 0 145 13 110 1 0 0 1 0 110 0 110 0 110 2 110 0
Province of Ontario 11355 1621 9990 321 264 537 916 59 9985 326 7128 1 0 24 2 56 5313 32 7135 43 7135 228 5021 158
Manitoba 1805 142 1391 4 10 120 134 4 1391 104 117 0 0 0 0 0 117 4 135 12 117 7 135 5
Saskatchewan 2079 205 1183 0 0 37 37 36 1000 72 131 1 0 0 0 0 131 2 131 28 131 11 131 1
Alberta 5555 592 5132 234 24 21 279 67 4802 376 1229 5 4 12 0 0 1229 16 1167 1 1213 62 1229 47
Prairies 9439 939 7706 238 34 178 450 107 7193 552 1477 6 4 12 0 0 1477 22 1433 41 1461 80 1495 53
British Columbia 4862 593 4866 118 22 7 482 16 4640 364 1035 2 5 9 5 0 1033 27 1033 44 996 102 996 33
Yukon 51 5 40 1 0 0 6 1 39 1 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C.
Northwest Territories 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 127 5 120 0 1 19 20 0 120 31 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 178 10 160 1 1 19 26 1 159 32 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 44057 5734 39214 729 325 3215 4403 219 34310 2134 12445 12 14 55 15 56 10645 139 12411 171 10516 449 10144 314

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 13, 2024 (surveillance weeks 2023-35 to 2024-02)
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 12191 2228 8662 0 0 692 692 17 8662 424 8662 8 42 14 87 0 8662 145 8662 90 8662 926 8662 77
Prince Edward Island 4641 615 2224 0 0 308 308 0 2224 92 270 0 0 0 8 0 269 13 259 0 269 87 253 1
Nova Scotia 29906 6915 17373 0 0 887 887 44 14745 937 698 15 2 1 10 0 698 35 691 3 698 186 697 0
New Brunswick 21422 2959 18836 570 11 1563 2144 10 18472 769 1615 7 4 0 22 0 1615 47 1615 10 1615 333 1615 30
Atlantic 68160 12717 47095 570 11 3450 4031 71 44103 2222 11245 30 48 15 127 0 11244 240 11227 103 11244 1532 11227 108
Région Nord-Est 35963 6211 29415 5 0 2730 2735 14 10622 723 1479 14 11 9 16 0 1479 70 1454 41 N.C. N.C. 1479 17
Québec-Chaudière-Appalaches 44304 8307 21036 0 0 2069 2069 27 20630 1716 8733 18 9 6 10 0 9021 351 8735 174 N.C. N.C. 7627 75
Centre-du-Québec 51968 10969 16863 0 0 1249 1249 13 12219 1100 786 15 8 11 7 0 786 39 786 24 N.C. N.C. 811 11
Montréal-Laval 66818 12380 40505 2 1 2665 2668 37 29226 2068 15715 90 37 76 22 0 15715 321 15767 256 N.C. N.C. 15715 213
Ouest du Québec 36362 8873 13150 4 0 1051 1055 34 13057 826 417 11 3 2 6 0 417 33 417 7 N.C. N.C. 417 7
Montérégie 34043 6905 23136 0 0 1491 1491 29 22109 1197 125 1 0 0 1 0 125 3 125 1 N.C. N.C. 125 0
Province of Québec 269458 53645 144105 11 1 11255 11267 154 107863 7630 27255 149 68 104 62 0 27543 817 27284 503 N.C. N.C. 26174 323
P.H.O.L. - Ottawa 7584 2900 4845 218 45 54 202 3 4843 109 2910 0 0 0 0 41 2910 5 2908 28 2910 361 2908 41
EORLA 28143 3732 11983 0 0 980 980 44 11983 1011 740 2 3 5 4 0 715 7 740 6 740 151 740 10
P.H.O.L. - Kingston 5408 1826 2818 68 14 23 85 1 2818 130 2055 0 0 0 0 39 2055 10 2055 0 2055 297 2055 6
UHN / Mount Sinai Hospital 22898 2430 13535 40 8 312 360 35 13535 153 494 0 0 5 1 0 494 1 494 0 494 19 494 4
P.H.O.L. - Toronto 13688 4665 22633 840 740 95 1108 52 22630 836 20562 0 0 0 0 573 20569 228 20547 172 20562 2372 20547 348
Sick Kids Hospital - Toronto 2658 227 2312 82 73 20 175 5 2312 287 2312 14 12 26 17 0 2312 59 2312 28 2312 415 2312 32
Shared Hospital Laboratory 33894 3840 29383 500 379 129 1008 46 29385 1195 29240 0 0 0 0 168 22884 229 29267 60 29312 1147 29289 174
P.H.O.L. - Sault Ste. Marie 281 173 296 30 0 8 32 0 296 21 209 0 0 0 0 1 209 1 209 0 209 19 209 0
P.H.O.L. - Timmins 698 219 613 29 8 5 31 0 613 53 509 0 0 0 0 14 509 4 509 1 509 43 509 0
St. Joseph's - London 18106 2899 7574 0 0 508 508 27 7574 614 1377 0 0 0 0 16 1396 20 1396 6 1396 176 1396 7
P.H.O.L. - London 10329 3509 7157 301 102 37 279 10 7155 382 5656 0 0 0 0 126 5656 31 5654 18 5656 611 5654 39
P.H.O.L. - Orillia 404 121 986 43 14 3 60 0 983 68 945 0 0 0 0 25 945 15 945 5 945 138 945 4
P.H.O.L. - Thunder Bay 1264 398 699 48 0 3 24 0 698 10 563 0 0 0 0 24 563 5 563 5 563 49 563 1
P.H.O.L. - Sudbury 445 203 494 10 0 0 10 0 492 14 345 0 0 0 0 6 346 1 345 0 345 42 345 2
P.H.O.L. - Hamilton 5161 1754 4016 87 47 22 112 5 4016 160 2950 0 0 0 0 79 2950 50 2949 32 2950 438 2949 40
P.H.O.L. - Peterborough 1606 605 1558 178 158 1 62 6 1555 207 1310 0 0 0 0 38 1310 31 1310 9 1310 235 1310 15
St. Joseph's - Hamilton 39367 4790 34005 0 0 1884 1884 107 34005 1543 34005 0 0 169 0 0 34005 223 34005 139 34005 2169 0 0
Sault Area Hospital 3681 516 2463 136 4 38 178 0 2456 104 1903 21 0 7 16 0 1854 27 1854 0 1854 201 1864 2
Province of Ontario 195615 34807 147370 2610 1592 4122 7098 341 147349 6897 108085 37 15 212 38 1150 101682 947 108062 509 108127 8883 74089 725
Manitoba 34085 5640 25657 10 121 1740 1871 52 25657 607 1869 0 6 6 40 0 1869 95 2466 55 1869 413 2466 30
Saskatchewan 45450 5788 29765 84 5 5205 5294 180 27175 635 8788 20 8 8 17 0 8788 194 8788 331 8788 990 8788 52
Alberta 115105 15493 95303 11098 501 546 12145 542 88502 3746 26350 98 76 121 3 0 26345 319 25842 15 25920 2622 26349 306
Prairies 194640 26921 150725 11192 627 7491 19310 774 141334 4988 37007 118 90 135 60 0 37002 608 37096 401 36577 4025 37603 388
British Columbia 75451 11049 74166 3195 409 153 5583 115 73015 3566 17114 99 133 83 142 0 17116 505 17001 379 16409 2874 16386 240
Yukon 1125 136 718 23 10 0 41 1 713 36 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 2603 260 1763 0 26 452 478 0 1763 144 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 4169 439 2864 110 40 452 610 1 2859 195 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 807493 139578 566325 17688 2680 26923 47899 1456 516523 25498 200706 433 354 549 429 1150 194771 3130 200854 1897 172740 17386 165479 1784

The data in the RVDSS report represent surveillance data available at the time of writing. Data not collected by reporting lab denoted by N.C.

Some specimens from Yukon (YT) are sent to reference laboratories in British Columbia and reported results reflect specimens identified as originating from YT.

Results from British Columbia comprise of specimens from the following sites: Children's and Women's Hospital Laboratory, Fraser Health Medical Microbiology Laboratory, Island Health, Providence Health Care, Vancouver Coastal Health sites, Victoria General Hospital, BCCDC Public Health Laboratory, Interior Health Authority sites and Northern Health Authority sites.

Due to different testing protocols of laboratories across Canada, influenza A subtype detection counts may not be included in total influenza A detection counts. Total influenza A and B positive counts are used to calculate percentage of tests positive.

Delays in the reporting of data may cause data to change retrospectively. Due to these delays, the sum of weekly report totals do not add up to cumulative totals.

Positive respiratory virus tests historical comparison

Figure 1: Positive severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), influenza, and respiratory syncytial virus tests (%) reported by participating laboratories in Canada by surveillance week compared to average and range from 2014-2015 to 2019-2020 season
Figure 1

Shaded area represents the maximum and minimum % of respiratory virus tests positive reported by week from seasons 2014-2015 to 2019-2020

Note: Changes to testing practices during the COVID-19 pandemic may cause substantial changes to indicator estimates from previous years. Collection of laboratory testing practice meta-data to understand these changes is ongoing. Interpret trends with caution.

Note: SARS-CoV-2 surveillance was integrated into RVDSS at the beginning of the 2022-2023 season; no prior data is available for historical comparison.

Note: Data from week 11 of the 2019-2020 season onwards are excluded from the historical comparison due to the COVID-19 pandemic.

Figure 1: Positive severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), influenza, and respiratory syncytial virus tests (%) reported by participating laboratories in Canada by surveillance week compared to average and range from 2014-2015 to 2019-2020 season
Week Week end 2023-2024 SARS-CoV-2% 2022-2023 SARS-CoV-2% 2023-2024 A% 2022-2023 A% 2021-2022 A% Max A% Base Min A% Base Av A% Base 2023-2024 B% 2022-2023 B% 2021-2022 B% Max B% Base Min B% Base Av B% Base 2023-2024 RSV% 2022-2023 RSV% 2021-2022 RSV% Max RSV% Base Min RSV% Base Av RSV% Base
35 2023-09-02 14.40 13.40 0.69 0.18 0.04 1.60 0.11 0.67 0.06 0.02 0.00 0.28 0.00 0.14 0.58 1.12 4.43 1.34 0.38 0.61
36 2023-09-09 15.92 13.07 0.43 0.14 0.01 2.11 0.23 0.99 0.06 0.04 0.00 0.55 0.00 0.15 0.71 1.12 6.61 1.09 0.22 0.62
37 2023-09-16 16.49 12.74 0.48 0.23 0.03 1.59 0.35 0.87 0.03 0.01 0.00 0.19 0.04 0.12 0.81 1.06 7.59 1.37 0.38 0.65
38 2023-09-23 18.61 13.62 0.51 0.48 0.00 2.15 0.43 1.17 0.02 0.02 0.00 0.21 0.00 0.14 1.15 1.47 7.16 1.24 0.37 0.67
39 2023-09-30 19.60 14.44 0.52 0.67 0.01 2.65 0.50 1.52 0.09 0.03 0.00 0.29 0.09 0.18 1.14 2.14 8.48 1.29 0.51 0.72
40 2023-10-07 19.81 15.06 0.66 0.96 0.00 2.17 1.01 1.58 0.05 0.03 0.02 0.20 0.05 0.11 1.35 2.54 8.53 1.39 0.34 0.71
41 2023-10-14 17.55 16.59 0.51 1.42 0.03 2.66 1.05 1.56 0.03 0.01 0.03 0.36 0.03 0.16 1.80 3.65 9.54 1.74 0.58 1.03
42 2023-10-21 17.78 15.39 0.73 2.36 0.03 2.96 0.77 1.92 0.08 0.05 0.02 0.45 0.05 0.25 2.38 4.63 8.18 2.11 0.63 1.25
43 2023-10-28 17.89 15.78 1.18 5.47 0.03 5.19 0.68 2.59 0.10 0.03 0.02 0.55 0.06 0.23 3.26 6.76 8.11 2.16 0.55 1.41
44 2023-11-04 17.74 13.91 2.66 10.75 0.10 8.32 1.08 3.35 0.10 0.03 0.10 0.71 0.12 0.31 4.06 7.77 7.82 3.35 0.83 2.07
45 2023-11-11 18.17 12.43 4.79 16.19 0.07 9.83 1.18 4.19 0.14 0.04 0.06 0.97 0.22 0.44 5.16 7.68 7.03 4.43 1.29 2.71
46 2023-11-18 18.80 11.96 7.37 20.23 0.10 13.89 1.42 5.43 0.16 0.05 0.06 1.49 0.09 0.57 5.85 7.54 7.18 6.33 1.38 3.60
47 2023-11-25 19.31 11.76 8.47 24.27 0.13 15.25 1.25 6.91 0.11 0.04 0.07 2.13 0.13 0.80 6.88 6.66 8.10 8.69 1.79 4.79
48 2023-12-02 18.03 12.12 11.35 24.04 0.19 18.07 0.76 9.40 0.23 0.03 0.15 3.18 0.08 1.20 7.09 6.87 8.92 9.47 3.11 6.08
49 2023-12-09 17.54 12.61 14.38 21.12 0.23 19.13 1.43 11.34 0.28 0.06 0.05 4.21 0.19 1.60 7.44 7.29 10.09 12.26 5.40 7.54
50 2023-12-16 17.79 13.10 15.28 17.31 0.23 26.42 1.97 13.93 0.36 0.06 0.02 7.50 0.15 2.48 7.22 8.61 10.78 13.19 6.42 8.55
51 2023-12-23 16.83 14.09 16.78 12.50 0.18 28.53 2.27 16.69 0.45 0.05 0.02 10.44 0.19 3.30 7.27 9.16 8.97 15.23 7.40 9.92
52 2023-12-30 15.37 15.53 18.12 7.93 0.09 33.97 3.30 20.32 0.51 0.07 0.01 12.58 0.23 4.04 7.38 10.59 6.72 17.80 7.89 10.97
1 2024-01-06 14.52 15.03 14.43 4.54 0.08 30.93 4.58 19.59 0.59 0.07 0.00 10.34 0.22 3.87 7.06 10.34 5.26 15.62 8.37 10.84
2 2024-01-13 13.01 13.38 11.23 2.21 0.11 26.80 5.46 19.11 0.56 0.05 0.01 11.01 0.29 3.91 6.22 9.07 4.32 14.05 7.45 10.24
Figure 2: Positive tests (%) of other respiratory viruses reported by participating laboratories in Canada by surveillance week compared to average and range from 2014-2015 to 2019-2020 season
Figure 2

Shaded area represents the maximum and minimum % of respiratory virus tests positive reported by week from seasons 2014-2015 to 2019-2020

Note: Changes to testing practices during the COVID-19 pandemic may cause substantial changes to indicator estimates from previous years. Collection of laboratory testing practice meta-data to understand these changes is ongoing. Interpret trends with caution.

Note: Data from week 11 of the 2019-2020 season onwards are excluded from the historical comparison due to the COVID-19 pandemic.

Note: % Tests Positive scale changes across the dashed line

Figure 2: Positive tests (%) of other respiratory viruses reported by participating laboratories in Canada by surveillance week compared to average and range from 2014-2015 to 2019-2020 season
Week Week end 2023-2024 EV/RV% 2022-2023 EV/RV% 2021-2022 EV/RV% Max EV/RV% Base Min EV/RV% Base Av EV/RV% Base 2023-2024 HPIV% 2022-2023 HPIV% 2021-2022 HPIV% Max HPIV% Base Min HPIV% Base Av HPIV% Base 2023-2024 ADV% 2022-2023 ADV% 2021-2022 ADV% Max ADV% Base Min ADV% Base Av ADV% Base 2023-2024 HMPV% 2022-2023 HMPV% 2021-2022 HMPV% Max HMPV% Base Min HMPV% Base Av HMPV% Base 2023-2024 HCoV% 2022-2023 HCoV% 2021-2022 HCoV% Max HCoV% Base Min HCoV% Base Av HCoV% Base
35 2023-09-02 12.50 15.47 21.96 27.19 22.44 24.71 1.99 2.80 5.99 3.16 1.15 2.44 1.62 2.28 1.18 1.74 0.99 1.43 0.34 1.80 0.23 2.04 0.10 0.78 0.28 0.53 1.05 0.76 0.18 0.45
36 2023-09-09 14.85 16.22 18.59 30.69 23.30 26.31 1.49 3.21 4.93 3.31 1.35 2.32 1.50 2.18 1.15 2.85 1.42 1.87 0.38 1.81 0.24 0.84 0.10 0.48 0.42 0.38 0.62 0.38 0.12 0.22
37 2023-09-16 18.29 21.73 27.46 33.58 27.74 31.69 1.60 3.02 5.97 3.26 1.65 2.40 1.47 2.10 0.81 2.44 1.38 1.86 0.39 1.38 0.17 1.61 0.00 0.51 0.23 0.28 0.44 0.56 0.00 0.26
38 2023-09-23 20.25 23.50 33.19 39.57 32.80 35.83 1.77 2.42 4.73 2.87 1.92 2.33 0.93 1.58 0.82 2.04 1.11 1.63 0.38 1.61 0.37 1.43 0.06 0.48 0.46 0.32 0.67 1.36 0.06 0.43
39 2023-09-30 18.51 22.89 30.01 40.59 34.87 37.68 1.32 3.09 8.12 3.01 1.70 2.24 1.15 2.21 1.14 2.27 1.04 1.66 0.51 1.43 0.17 0.72 0.05 0.29 0.28 0.59 0.62 0.66 0.07 0.45
40 2023-10-07 17.45 19.32 26.26 41.29 33.00 35.43 1.34 3.69 8.19 3.28 1.90 2.43 1.41 1.79 1.31 2.25 1.39 1.82 0.32 1.49 0.16 0.92 0.05 0.34 0.26 0.93 0.57 1.08 0.22 0.59
41 2023-10-14 15.74 16.70 22.91 33.62 26.94 29.93 1.28 3.52 10.46 3.70 1.96 2.75 1.38 2.03 1.37 1.91 1.28 1.70 0.37 1.66 0.20 0.95 0.04 0.46 0.32 0.99 1.69 0.70 0.00 0.34
42 2023-10-21 13.12 12.95 22.16 32.62 24.54 27.86 1.59 4.22 10.01 3.89 2.64 3.21 1.43 1.65 2.54 2.39 1.47 1.86 0.46 1.58 0.15 0.89 0.15 0.40 0.17 1.16 1.07 1.18 0.20 0.49
43 2023-10-28 12.53 11.05 19.64 28.73 21.67 24.95 1.21 4.41 9.38 3.98 3.18 3.54 1.48 1.79 1.15 2.42 1.63 1.96 0.46 1.79 0.36 1.64 0.12 0.58 0.38 1.86 1.05 2.35 0.27 0.75
44 2023-11-04 10.81 10.23 21.45 23.82 16.75 21.38 1.44 4.14 10.28 4.81 2.94 3.72 1.76 2.02 1.42 2.88 1.18 2.21 0.55 1.79 0.77 1.08 0.23 0.48 0.37 2.54 2.21 2.59 0.21 0.88
45 2023-11-11 10.70 7.77 22.39 23.08 15.17 20.56 1.65 3.90 9.97 5.42 2.53 4.01 1.46 1.99 1.63 2.68 2.02 2.42 0.61 2.06 0.64 1.30 0.04 0.77 0.42 3.00 2.57 2.74 0.52 0.96
46 2023-11-18 8.65 6.93 21.37 22.77 15.28 19.24 1.39 3.97 8.29 5.72 1.62 4.14 2.03 1.87 2.51 2.90 1.99 2.52 0.80 1.89 0.99 1.43 0.18 0.81 0.65 3.54 2.99 3.32 0.46 1.25
47 2023-11-25 7.54 4.88 18.54 20.84 12.15 16.09 1.56 3.63 7.04 7.00 2.36 4.72 1.91 1.89 1.94 2.95 1.83 2.35 1.02 1.78 1.01 2.02 0.09 0.90 0.67 3.24 3.90 3.26 0.37 1.25
48 2023-12-02 6.84 4.74 16.64 16.72 12.69 13.84 1.50 3.04 5.78 6.14 3.03 4.18 2.16 1.87 1.89 3.34 1.66 2.49 0.93 1.86 1.48 1.94 0.31 1.09 0.77 3.94 4.94 4.30 1.00 2.04
49 2023-12-09 6.00 4.09 14.57 16.32 10.72 13.07 1.39 3.03 3.97 5.65 2.94 4.19 1.86 1.68 2.48 3.03 1.84 2.50 1.23 1.93 1.22 2.80 0.49 1.48 1.10 4.48 6.58 5.19 0.84 2.53
50 2023-12-16 5.90 4.58 12.40 13.85 8.43 10.91 1.46 2.98 3.23 5.95 2.54 4.22 2.00 2.29 2.72 3.13 1.49 2.42 1.31 1.92 1.08 3.32 0.46 1.68 1.47 5.13 7.26 6.04 1.54 3.16
51 2023-12-23 5.56 4.49 9.95 14.18 8.81 10.48 1.35 3.09 3.01 6.71 2.94 3.95 1.55 1.76 2.54 3.20 1.36 2.04 1.60 2.23 1.20 4.39 0.37 2.47 1.78 5.28 8.11 6.68 1.87 3.72
52 2023-12-30 4.70 4.50 7.71 14.41 6.24 9.26 1.35 3.32 2.13 5.08 2.87 3.75 1.76 1.80 1.92 2.59 1.20 1.76 1.77 2.75 1.00 3.81 0.41 2.49 2.48 4.73 10.33 6.73 2.78 4.73
1 2024-01-06 4.78 4.19 5.71 11.09 4.36 7.42 1.48 3.63 1.84 5.08 2.68 3.34 1.47 1.88 1.84 2.67 0.85 1.54 2.15 2.94 0.72 4.45 0.28 2.74 3.03 4.40 9.27 7.77 3.07 5.16
2 2024-01-13 4.27 4.71 3.98 9.55 4.31 6.79 1.22 3.24 1.19 4.12 2.46 3.05 1.31 1.87 1.13 2.15 0.87 1.37 1.38 2.61 0.38 4.76 0.42 2.69 3.10 4.01 7.46 7.89 2.84 5.45

Positive severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) tests

Figure 3: Positive severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) tests (%) in Canada by region by surveillance week
Figure 3

Note: Differences in positivity between jurisdictions can reflect differences in testing practices. Please interpret with caution.

Figure 3: Positive severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) tests (%) in Canada by region by surveillance week
Week Week end Can Tests SARS-CoV-2% Atl Tests SARS-CoV-2% QC Tests SARS-CoV-2% ON Tests SARS-CoV-2% Pr Tests SARS-CoV-2% BC Tests SARS-CoV-2% Terr Tests SARS-CoV-2%
35 2023-09-02 25656 14.40 2110 16.92 9351 16.30 6230 12.39 5192 10.59 2651 18.03 122 11.48
36 2023-09-09 28237 15.92 2346 20.20 10215 17.37 6939 15.46 5968 11.90 2640 16.70 129 17.05
37 2023-09-16 31790 16.49 2567 18.62 11678 18.11 7337 15.66 6948 12.12 3111 20.64 149 10.07
38 2023-09-23 36264 18.61 2775 18.38 13455 20.48 8514 18.38 7969 14.23 3377 22.59 174 12.64
39 2023-09-30 40587 19.60 3126 22.65 15431 21.30 9291 17.86 8658 15.65 3895 23.59 186 13.98
40 2023-10-07 42173 19.81 3544 24.41 15684 22.19 9349 17.61 9198 15.96 4202 20.75 196 12.24
41 2023-10-14 38463 17.55 3583 20.74 12605 18.30 8426 15.27 9625 16.77 4047 19.13 177 15.25
42 2023-10-21 39350 17.78 3493 19.70 12590 18.63 9300 16.86 10040 17.16 3737 17.13 190 17.89
43 2023-10-28 37286 17.89 3095 17.74 12003 18.29 9276 19.35 9450 17.05 3262 14.87 200 18.00
44 2023-11-04 38183 17.74 2965 17.91 11975 18.42 9060 17.09 10341 18.12 3648 15.98 194 15.46
45 2023-11-11 38722 18.17 3122 20.12 11815 19.90 9607 18.24 10448 16.98 3545 14.41 185 10.81
46 2023-11-18 41432 18.80 3186 22.47 13182 20.21 10470 20.36 11134 16.80 3245 12.14 215 5.12
47 2023-11-25 42304 19.31 3490 22.35 12938 21.52 10880 22.17 11422 15.57 3385 11.96 189 6.35
48 2023-12-02 44714 18.03 3648 21.98 14100 22.18 11175 20.05 11903 12.58 3639 10.31 249 7.63
49 2023-12-09 46883 17.54 3654 20.17 14467 22.78 11648 18.66 12455 12.42 4272 10.30 387 7.75
50 2023-12-16 48216 17.79 4065 18.60 15835 23.97 12143 18.69 12089 11.17 3746 10.25 338 6.21
51 2023-12-23 48308 16.83 4353 15.81 16682 22.12 11548 18.73 11472 9.91 3952 10.55 301 11.63
52 2023-12-30 46939 15.37 4234 14.67 15739 19.65 11528 17.68 10314 9.95 4930 8.64 194 6.19
1 2024-01-06 47937 14.52 4471 12.68 15823 17.72 11545 16.83 10577 10.62 5305 9.56 216 8.33
2 2024-01-13 44057 13.01 4333 11.98 13890 14.77 11355 14.28 9439 9.95 4862 12.20 178 5.62

Positive influenza (Flu) tests

Figure 4: Positive influenza (Flu) tests (%) in Canada by region by surveillance week
Figure 4
Figure 4: Positive influenza (Flu) tests (%) in Canada by region by surveillance week
Week Week end Can Tests Can A% Can B% Atl Tests Atl A% Atl B% QC Tests QC A% QC B% ON Tests ON A% ON B% Pr Tests Pr A% Pr B% BC Tests BC A% BC B% Terr Tests Terr A% Terr B%
35 2023-09-02 14536 0.69 0.06 984 0.00 0.00 3339 0.24 0.15 4324 0.39 0.09 3647 0.58 0.00 2158 2.46 0.00 84 2.38 0.00
36 2023-09-09 15421 0.43 0.06 1047 0.00 0.00 3649 0.19 0.03 4455 0.31 0.09 4060 0.37 0.05 2117 1.46 0.09 93 0.00 0.00
37 2023-09-16 18031 0.48 0.03 1216 0.08 0.00 4174 0.41 0.07 5145 0.29 0.00 4701 0.38 0.04 2703 1.29 0.04 92 0.00 0.00
38 2023-09-23 20119 0.51 0.02 1388 0.07 0.00 4734 0.30 0.00 5652 0.21 0.05 5323 0.62 0.02 2928 1.47 0.00 94 0.00 0.00
39 2023-09-30 21521 0.52 0.09 1403 0.14 0.07 4847 0.21 0.08 6186 0.37 0.11 5362 0.50 0.11 3598 1.36 0.06 125 0.00 0.00
40 2023-10-07 23652 0.66 0.05 1775 0.34 0.00 5628 0.37 0.04 6456 0.31 0.00 5797 0.79 0.16 3878 1.60 0.05 118 0.00 0.00
41 2023-10-14 23195 0.51 0.03 1938 0.57 0.00 4978 0.22 0.06 6283 0.30 0.00 6054 0.81 0.05 3828 0.73 0.03 114 0.00 0.00
42 2023-10-21 24050 0.73 0.08 2029 0.69 0.05 5110 0.37 0.02 6834 0.47 0.07 6353 1.13 0.13 3599 1.06 0.11 125 0.00 0.00
43 2023-10-28 23241 1.18 0.10 1979 0.96 0.00 5450 0.64 0.11 6814 0.50 0.06 5845 2.41 0.17 3039 1.45 0.10 114 0.88 0.00
44 2023-11-04 25300 2.66 0.10 1914 1.25 0.05 5705 0.63 0.07 6996 0.51 0.06 6979 6.89 0.17 3562 2.58 0.11 144 2.08 0.00
45 2023-11-11 25837 4.79 0.14 2069 2.03 0.14 5970 0.84 0.07 7240 1.22 0.07 6973 13.14 0.29 3460 3.96 0.14 125 3.20 0.00
46 2023-11-18 28577 7.37 0.16 2219 3.11 0.09 6454 1.36 0.09 7797 2.68 0.15 8728 18.56 0.26 3258 3.59 0.12 121 2.48 0.00
47 2023-11-25 29078 8.47 0.11 2521 4.60 0.04 6561 2.04 0.06 8070 2.69 0.02 8277 21.18 0.28 3517 6.43 0.09 132 12.88 0.00
48 2023-12-02 31931 11.35 0.23 2743 4.89 0.11 7199 3.78 0.15 8448 4.46 0.17 9556 24.79 0.41 3836 10.79 0.21 149 38.93 0.00
49 2023-12-09 33606 14.38 0.28 2817 9.66 0.11 8141 7.14 0.12 8462 7.03 0.21 10335 26.93 0.57 3590 13.12 0.11 261 49.43 0.00
50 2023-12-16 38769 15.28 0.36 3363 12.73 0.09 10087 11.63 0.12 9266 8.48 0.41 11272 24.33 0.70 4496 14.23 0.16 285 54.39 0.00
51 2023-12-23 40906 16.78 0.45 3820 19.08 0.31 12090 15.38 0.12 9246 11.39 0.51 10787 21.65 0.90 4747 16.64 0.29 216 45.37 0.00
52 2023-12-30 42537 18.12 0.51 3874 20.99 0.36 13501 19.37 0.07 9835 15.06 0.63 9834 17.57 1.23 5352 18.89 0.24 141 42.55 0.00
1 2024-01-06 43259 14.43 0.59 4132 17.91 0.36 13860 17.30 0.22 9869 11.67 0.54 9593 11.27 1.42 5634 14.55 0.39 171 30.99 0.00
2 2024-01-13 39214 11.23 0.56 3864 15.79 0.31 12628 15.20 0.19 9990 9.17 0.59 7706 5.84 1.39 4866 9.91 0.33 160 16.25 0.63

Positive respiratory syncytial virus (RSV) tests

Figure 5: Positive respiratory syncytial virus (RSV) tests (%) in Canada by region by surveillance week
Figure 5
Figure 5: Positive respiratory syncytial virus (RSV) tests (%) in Canada by region by surveillance week
Week Week end Can Tests RSV% Atl Tests RSV% QC Tests RSV% ON Tests RSV% Pr Tests RSV% BC Tests RSV% Terr Tests RSV%
35 2023-09-02 13603 0.58 969 0.00 2540 1.14 4324 0.81 3528 0.20 2158 0.32 84 1.19
36 2023-09-09 14352 0.71 1047 0.57 2750 1.64 4455 0.88 3906 0.18 2101 0.24 93 0.00
37 2023-09-16 16804 0.81 1201 0.25 3181 1.67 5138 1.01 4490 0.38 2702 0.41 92 0.00
38 2023-09-23 18780 1.15 1381 1.30 3652 2.27 5652 1.43 5073 0.37 2928 0.51 94 0.00
39 2023-09-30 20209 1.14 1392 0.79 3788 2.38 6186 1.42 5120 0.43 3598 0.56 125 0.00
40 2023-10-07 22036 1.35 1761 0.28 4333 2.75 6456 1.95 5490 0.36 3878 0.72 118 0.00
41 2023-10-14 21735 1.80 1927 0.83 3897 3.70 6281 2.48 5688 0.63 3828 1.04 114 0.00
42 2023-10-21 22467 2.38 2015 0.69 3889 4.78 6834 3.72 6005 0.58 3599 1.25 125 0.00
43 2023-10-28 21718 3.26 1970 1.78 4234 6.24 6814 4.21 5547 1.23 3039 1.74 114 0.00
44 2023-11-04 23641 4.06 1904 2.15 4506 6.88 6997 5.80 6528 1.78 3562 2.36 144 2.78
45 2023-11-11 24136 5.16 2058 2.77 4680 7.97 7241 7.62 6573 2.01 3459 3.58 125 6.40
46 2023-11-18 26512 5.85 2195 2.41 4910 10.14 7796 7.91 8232 2.87 3258 4.27 121 7.44
47 2023-11-25 26749 6.88 2363 4.70 4975 11.82 8068 8.66 7766 3.17 3445 5.28 132 11.36
48 2023-12-02 29413 7.09 2549 5.88 5533 11.46 8448 8.49 8951 3.58 3783 6.66 149 8.72
49 2023-12-09 30352 7.44 2665 7.69 5930 11.11 8461 7.40 9560 4.44 3475 9.35 261 6.90
50 2023-12-16 34765 7.22 3004 8.46 7537 9.73 9262 5.99 10330 5.09 4347 9.50 285 10.53
51 2023-12-23 36058 7.27 3258 9.45 8774 9.14 9244 4.64 9954 6.38 4615 9.36 213 6.57
52 2023-12-30 37695 7.38 3431 8.57 9849 7.53 9834 4.62 9245 8.37 5196 9.49 140 18.57
1 2024-01-06 37934 7.06 3630 9.12 9955 7.31 9871 4.03 8903 7.46 5404 9.88 171 14.62
2 2024-01-13 34310 6.22 3383 9.16 8950 6.15 9985 3.26 7193 7.67 4640 7.84 159 20.13

Positive human parainfluenza virus (HPIV) tests

Figure 6: Positive human parainfluenza virus (HPIV) tests (%) in Canada by region by surveillance week
Figure 6
Figure 6: Positive human parainfluenza virus (HPIV) tests (%) in Canada by region by surveillance week
Week Week End Can Tests HPIV% Atl Tests HPIV% QC Tests HPIV% ON Tests HPIV% Pr Tests HPIV% BC Tests HPIV%
35 2023-09-02 6234 1.99 362 1.38 847 3.90 3406 1.85 984 1.02 635 2.05
36 2023-09-09 6321 1.49 355 1.69 868 2.19 3420 1.43 1133 0.97 545 1.65
37 2023-09-16 7419 1.60 401 2.49 1053 2.18 3886 1.34 1326 1.06 753 2.66
38 2023-09-23 8139 1.77 430 2.79 1122 2.85 4366 1.74 1445 0.90 776 1.42
39 2023-09-30 8626 1.32 401 1.25 1117 1.88 4948 1.33 1414 1.06 746 0.94
40 2023-10-07 8791 1.34 467 3.43 1178 2.04 4850 1.20 1541 0.39 755 1.85
41 2023-10-14 8879 1.28 491 1.63 1094 1.37 4898 1.16 1638 1.04 758 2.24
42 2023-10-21 9280 1.59 498 2.21 1050 1.52 5293 1.51 1706 1.47 733 2.18
43 2023-10-28 9084 1.21 474 1.48 1063 1.98 5223 0.96 1655 0.85 669 2.69
44 2023-11-04 9489 1.44 492 2.24 1067 2.06 5215 1.00 1931 1.24 784 3.57
45 2023-11-11 9601 1.65 467 2.78 1257 1.83 5242 1.11 1851 1.30 784 5.10
46 2023-11-18 10436 1.39 500 2.20 1426 1.33 5505 1.24 2186 0.87 819 3.42
47 2023-11-25 10619 1.56 620 1.77 1442 1.04 5708 1.47 1942 1.24 907 3.53
48 2023-12-02 11448 1.50 676 2.37 1587 1.32 5968 1.39 2234 1.03 983 2.95
49 2023-12-09 11332 1.39 668 1.65 1630 1.10 6035 1.44 2253 1.15 746 2.14
50 2023-12-16 12630 1.46 730 1.92 1664 0.72 6697 1.36 2457 1.47 1082 2.96
51 2023-12-23 12646 1.35 768 1.56 1857 0.54 6421 1.46 2406 0.79 1194 3.02
52 2023-12-30 12875 1.35 709 1.55 2004 0.85 6814 1.29 2167 0.97 1181 3.13
1 2024-01-06 13403 1.48 812 1.72 2048 0.59 7059 1.60 2255 1.20 1229 2.69
2 2024-01-13 12445 1.22 924 1.73 1881 0.53 7128 1.16 1477 1.49 1035 2.03

Positive adenovirus (ADV) tests

Figure 7: Positive adenovirus (ADV) tests (%) in Canada by region by surveillance week
Figure 7
Figure 7: Positive adenovirus (ADV) tests (%) in Canada by region by surveillance week
Week Week End Can Tests ADV% Atl Tests ADV% QC Tests ADV% ON Tests ADV% Pr Tests ADV% BC Tests ADV%
35 2023-09-02 6238 1.62 362 1.93 851 2.70 3406 0.91 984 2.44 635 2.52
36 2023-09-09 6332 1.50 355 1.97 879 2.28 3420 0.82 1133 1.94 545 3.30
37 2023-09-16 7438 1.47 401 2.00 1071 2.43 3887 0.90 1326 1.96 753 1.86
38 2023-09-23 8149 0.93 429 1.17 1134 1.06 4365 0.62 1445 1.59 776 1.16
39 2023-09-30 8613 1.15 401 1.00 1129 2.04 4923 0.69 1414 1.63 746 2.01
40 2023-10-07 8809 1.41 467 2.36 1195 2.85 4851 0.66 1541 1.69 755 2.78
41 2023-10-14 8913 1.38 491 1.63 1111 3.42 4915 0.75 1638 1.47 758 2.11
42 2023-10-21 9285 1.43 498 1.20 1058 3.59 5292 0.76 1704 1.47 733 3.27
43 2023-10-28 9098 1.48 474 2.74 1077 3.62 5223 0.69 1655 1.63 669 2.99
44 2023-11-04 9507 1.76 492 2.03 1085 3.87 5215 1.04 1931 2.12 784 2.55
45 2023-11-11 9618 1.46 467 2.57 1274 2.98 5242 0.92 1851 1.67 784 1.40
46 2023-11-18 10447 2.03 500 4.60 1437 4.31 5505 0.94 2186 1.92 819 4.03
47 2023-11-25 10667 1.91 620 2.74 1461 3.97 5712 1.07 1941 1.55 911 3.84
48 2023-12-02 11509 2.16 676 3.25 1613 3.84 5968 1.36 2233 2.10 983 3.05
49 2023-12-09 11410 1.86 668 2.84 1652 3.75 6036 1.18 2253 1.33 746 3.62
50 2023-12-16 12718 2.00 730 2.19 1681 3.09 6697 1.78 2457 1.67 1082 2.40
51 2023-12-23 11969 1.55 768 1.82 1875 2.61 5726 0.89 2406 1.45 1194 3.02
52 2023-12-30 10863 1.76 709 2.12 2010 2.49 4797 0.81 2166 1.43 1181 4.74
1 2024-01-06 11534 1.47 812 1.11 2052 2.19 5186 0.75 2255 1.15 1229 4.15
2 2024-01-13 10645 1.31 924 1.52 1898 2.32 5313 0.60 1477 1.49 1033 2.61

Positive human metapneumovirus (HMPV) tests

Figure 8: Positive human metapneumovirus (HMPV) tests (%) in Canada by region by surveillance week
Figure 8
Figure 8: Positive human metapneumovirus (HMPV) tests (%) in Canada by region by surveillance week
Week Week End Can Tests HMPV% Atl Tests HMPV% QC Tests HMPV% ON Tests HMPV% Pr Tests HMPV% BC Tests HMPV%
35 2023-09-02 6260 0.34 362 0.00 848 1.42 3407 0.21 1008 0.10 635 0.16
36 2023-09-09 6354 0.38 355 0.28 867 1.38 3423 0.20 1164 0.17 545 0.37
37 2023-09-16 7455 0.39 401 0.50 1053 0.76 3886 0.36 1362 0.07 753 0.53
38 2023-09-23 8194 0.38 429 0.00 1124 1.07 4365 0.14 1500 0.13 776 1.42
39 2023-09-30 8679 0.51 401 0.25 1118 0.89 4948 0.36 1466 0.34 746 1.34
40 2023-10-07 8828 0.32 457 0.44 1180 0.76 4853 0.14 1583 0.32 755 0.66
41 2023-10-14 8911 0.37 484 0.00 1096 1.00 4915 0.20 1658 0.12 758 1.32
42 2023-10-21 9320 0.46 498 0.20 1050 1.33 5298 0.32 1741 0.17 733 1.09
43 2023-10-28 9082 0.46 474 0.63 1066 1.41 5200 0.31 1673 0.18 669 0.75
44 2023-11-04 9512 0.55 492 0.20 1070 1.96 5218 0.17 1948 0.62 784 1.15
45 2023-11-11 9602 0.61 467 0.21 1256 2.15 5244 0.21 1851 0.70 784 0.89
46 2023-11-18 10310 0.80 500 0.40 1426 2.38 5505 0.36 2175 0.37 704 2.56
47 2023-11-25 10668 1.02 620 0.97 1442 2.57 5715 0.44 1958 0.66 911 2.96
48 2023-12-02 11476 0.93 676 0.89 1585 2.33 5966 0.47 2230 0.54 983 2.34
49 2023-12-09 11377 1.23 668 1.20 1635 2.39 6041 0.61 2232 2.20 746 0.94
50 2023-12-16 12682 1.31 730 1.78 1669 2.52 6708 0.63 2422 1.61 1082 2.77
51 2023-12-23 12595 1.60 768 1.56 1857 2.48 6415 0.78 2361 2.50 1194 2.85
52 2023-12-30 12822 1.77 709 2.26 2006 2.14 6814 0.98 2112 2.27 1181 4.49
1 2024-01-06 13323 2.15 812 1.85 2050 2.15 7012 1.07 2220 3.69 1229 5.78
2 2024-01-13 12411 1.38 924 1.41 1886 1.59 7135 0.60 1433 2.86 1033 4.26

Positive enterovirus/rhinovirus (EV/RV) tests

Figure 9: Positive enterovirus/rhinovirus (EV/RV) tests (%) in Canada by region by surveillance week
Figure 9
Figure 9: Positive enterovirus/rhinovirus (EV/RV) tests (%) in Canada by region by surveillance week
Week Week End Can Tests EV/RV% Atl Tests EV/RV% QC Tests EV/RV% ON Tests EV/RV% Pr Tests EV/RV% BC Tests EV/RV%
35 2023-09-02 5345 12.50 362 20.72 - - 3409 10.44 966 14.60 608 15.79
36 2023-09-09 5414 14.85 355 25.35 - - 3423 12.80 1119 16.80 516 17.05
37 2023-09-16 6331 18.29 401 23.69 - - 3887 16.08 1314 22.37 722 19.81
38 2023-09-23 6991 20.25 429 27.51 - - 4365 17.11 1428 25.14 747 24.63
39 2023-09-30 7478 18.51 401 26.43 - - 4948 15.74 1397 22.12 715 25.31
40 2023-10-07 7559 17.45 467 23.55 - - 4853 14.77 1515 20.99 706 23.80
41 2023-10-14 7762 15.74 491 23.01 - - 4915 13.77 1612 16.00 717 23.15
42 2023-10-21 8203 13.12 498 22.09 - - 5298 10.82 1680 13.51 695 22.16
43 2023-10-28 7976 12.53 474 16.03 - - 5227 9.95 1623 15.59 637 23.23
44 2023-11-04 8379 10.81 492 17.07 - - 5218 8.39 1910 12.15 736 20.52
45 2023-11-11 8308 10.70 467 16.70 - - 5244 8.68 1829 10.44 743 21.53
46 2023-11-18 8953 8.65 500 14.20 - - 5506 6.79 2156 8.44 779 18.87
47 2023-11-25 9175 7.54 620 11.94 - - 5716 5.86 1934 7.19 883 15.63
48 2023-12-02 9842 6.84 676 9.76 - - 5971 5.19 2200 6.64 959 15.43
49 2023-12-09 9693 6.00 668 6.74 - - 6041 4.50 2234 6.22 695 17.70
50 2023-12-16 11004 5.90 730 7.81 - - 6709 4.62 2435 4.97 1059 14.45
51 2023-12-23 10734 5.56 768 6.51 - - 6434 3.73 2378 5.89 1154 14.47
52 2023-12-30 10821 4.70 709 5.50 - - 6813 3.30 2154 4.83 1145 12.31
1 2024-01-06 11256 4.78 812 4.43 - - 7012 3.76 2235 5.46 1197 9.69
2 2024-01-13 10516 4.27 924 4.22 - - 7135 3.20 1461 5.48 996 10.24

Positive human coronavirus (HCoV) tests

Figure 10: Positive human coronavirus (HCoV) tests (%) in Canada by region by surveillance week
Figure 10
Figure 10: Positive human coronavirus (HCoV) tests (%) in Canada by region by surveillance week
Week Week End Can Tests HCoV% Atl Tests HCoV% QC Tests HCoV% ON Tests HCoV% Pr Tests HCoV% BC Tests HCoV%
35 2023-09-02 5054 0.28 362 0.00 847 0.47 2230 0.13 1007 0.60 608 0.16
36 2023-09-09 5195 0.42 355 0.56 868 0.81 2285 0.09 1171 0.77 516 0.39
37 2023-09-16 6174 0.23 401 0.50 1053 0.47 2636 0.23 1362 0.00 722 0.14
38 2023-09-23 6796 0.46 429 0.00 1122 0.80 2995 0.40 1503 0.40 747 0.54
39 2023-09-30 7025 0.28 401 0.00 1117 0.45 3325 0.21 1467 0.48 715 0.14
40 2023-10-07 7305 0.26 467 0.21 1178 0.08 3390 0.18 1587 0.25 683 1.02
41 2023-10-14 7435 0.32 491 0.20 1094 0.73 3461 0.12 1672 0.60 717 0.14
42 2023-10-21 7696 0.17 498 0.20 1050 0.48 3707 0.05 1746 0.23 695 0.14
43 2023-10-28 7575 0.38 473 0.42 1065 0.38 3707 0.30 1693 0.53 637 0.47
44 2023-11-04 7747 0.37 476 0.21 1067 0.28 3508 0.43 1960 0.20 736 0.82
45 2023-11-11 7894 0.42 467 0.86 1187 0.51 3607 0.28 1890 0.37 743 0.81
46 2023-11-18 8669 0.65 500 0.20 1324 0.98 3838 0.42 2228 0.99 779 0.51
47 2023-11-25 8816 0.67 620 0.65 1357 0.96 3977 0.55 1979 0.61 883 0.91
48 2023-12-02 9652 0.77 676 0.74 1518 1.05 4242 0.42 2257 0.75 959 1.88
49 2023-12-09 9160 1.10 668 1.20 1523 1.64 4011 0.57 2263 1.28 695 2.30
50 2023-12-16 10457 1.47 730 0.41 1583 1.58 4617 1.47 2468 1.58 1059 1.79
51 2023-12-23 10481 1.77 768 1.30 1765 2.10 4389 1.66 2405 1.58 1154 2.43
52 2023-12-30 10332 2.48 709 1.55 1885 2.97 4427 2.48 2166 2.08 1145 2.97
1 2024-01-06 10872 3.03 812 2.96 1863 2.09 4722 3.37 2278 2.63 1197 3.93
2 2024-01-13 10144 3.10 924 3.03 1708 2.46 5021 3.15 1495 3.55 996 3.31

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