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Respiratory Virus Report, Week 41 - ending October 14, 2023

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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 41 (week ending October 14, 2023) in Canada, participating RVDSS laboratories reported 6,682 detections of SARS-CoV-2 from 38,153 tests (17.5% positive). Among non-SARS-CoV-2 respiratory viruses, where test volumes are lower (range of 6,142 to 21,711 tests), activity of enterovirus/rhinovirus is highest.

  • While there has been an observed increase in national SARS-CoV-2 percent positivity since early-July, some jurisdictions may be showing early signs of decreases.
  • While activity of enterovirus/rhinovirus is highest, this is expected for this time of year and activity remains below expected levels (942 detections; 18.5% 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 October 14, 2023 (surveillance week 2023-41)
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 599 130 372 0 0 1 1 0 372 4 372 1 1 1 5 0 372 5 372 0 372 68 372 1
Prince Edward Island 303 45 75 0 0 1 1 0 75 0 11 0 0 0 0 0 11 0 11 0 11 7 11 0
Nova Scotia 1729 408 687 0 0 6 6 0 687 6 37 0 0 0 0 0 37 2 30 0 37 14 37 0
New Brunswick 952 160 804 1 0 2 3 0 793 6 71 0 0 0 0 0 71 1 71 0 71 24 71 0
Atlantic 3583 743 1938 1 0 10 11 0 1927 16 491 1 1 1 5 0 491 8 484 0 491 113 491 1
Région Nord-Est 1663 298 1211 0 0 0 0 0 257 7 47 1 0 0 1 0 47 5 46 0 N.C. N.C. 47 0
Québec-Chaudière-Appalaches 2290 401 608 0 0 2 2 0 608 18 261 1 0 0 0 0 278 12 261 2 N.C. N.C. 261 1
Centre-du-Québec 2130 428 451 0 0 2 2 1 450 21 25 0 0 1 0 0 25 2 25 0 N.C. N.C. 25 0
Montréal-Laval 3126 470 1331 0 0 5 5 0 1215 46 734 5 3 2 0 0 734 18 737 9 N.C. N.C. 734 7
Ouest du Québec 1983 486 615 0 0 2 2 1 615 25 20 0 0 0 0 0 20 1 20 0 N.C. N.C. 20 0
Montérégie 1420 225 763 0 0 0 0 1 752 27 5 0 0 0 1 0 5 0 5 0 N.C. N.C. 5 0
Province of Québec 12612 2308 4979 0 0 11 11 3 3897 144 1092 7 3 3 2 0 1109 38 1094 11 N.C. N.C. 1092 8
P.H.O.L. - Ottawa 299 93 199 0 0 0 0 0 199 1 154 0 0 0 0 2 154 0 154 0 154 41 154 0
EORLA 1344 137 455 0 0 4 4 0 455 32 40 0 0 0 1 0 40 0 40 0 40 12 40 0
P.H.O.L. - Kingston 271 64 148 0 0 0 0 0 148 0 111 0 0 0 0 2 111 0 111 0 111 29 111 0
UHN / Mount Sinai Hospital 1012 66 619 0 0 1 1 0 619 2 24 0 0 0 0 0 24 0 24 0 24 2 24 0
P.H.O.L. - Toronto 505 201 1052 3 3 1 6 0 1052 10 951 0 0 0 0 23 951 6 951 5 951 216 951 3
Sick Kids Hospital - Toronto N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R.
Shared Hospital Laboratory 1408 179 1408 1 0 0 1 0 1408 39 1408 0 0 0 0 5 1408 9 1408 2 0 0 1408 0
P.H.O.L. - Sault Ste. Marie 2 2 4 0 0 0 0 0 4 0 4 0 0 0 0 0 4 0 4 0 4 1 4 0
P.H.O.L. - Timmins 41 6 37 0 0 0 0 0 37 1 34 0 0 0 0 0 34 1 34 0 34 3 34 0
St. Joseph's - London 924 124 53 0 0 0 0 0 53 5 30 0 0 0 0 2 47 1 47 0 47 8 48 0
P.H.O.L. - London 406 125 308 0 0 0 0 0 308 4 262 0 0 0 0 6 262 4 262 0 262 35 262 0
P.H.O.L. - Orillia 13 1 38 0 0 0 0 0 38 0 38 0 0 0 0 1 38 1 38 0 38 11 38 0
P.H.O.L. - Thunder Bay 51 21 33 0 0 0 0 0 33 0 16 0 0 0 0 1 16 0 16 0 16 2 16 0
P.H.O.L. - Sudbury 22 12 33 0 0 0 0 0 31 0 16 0 0 0 0 1 16 0 16 0 16 6 16 0
P.H.O.L. - Hamilton 127 39 146 0 0 0 0 0 146 6 119 0 0 0 0 2 119 2 119 0 119 31 119 0
P.H.O.L. - Peterborough 87 25 71 0 0 0 0 0 71 10 60 0 0 0 0 2 60 0 60 0 60 11 60 1
St. Joseph's - Hamilton 1692 176 1455 0 0 6 6 0 1455 35 1455 0 0 4 0 0 1455 9 1455 3 1455 138 0 0
Sault Area Hospital 136 15 112 0 0 0 0 0 112 0 56 0 0 1 0 0 56 0 56 0 56 7 56 0
Province of Ontario 8340 1286 6171 4 3 12 18 0 6169 145 4778 0 0 5 1 47 4795 33 4795 10 3387 553 3341 4
Manitoba 1513 240 1152 0 1 5 6 0 1152 0 72 0 0 0 2 0 72 3 106 0 72 31 106 1
Saskatchewan 2293 341 918 0 0 5 5 0 887 7 390 0 0 0 1 0 390 5 390 2 390 73 390 1
Alberta 5590 972 2636 10 3 0 13 1 2357 16 29 1 0 0 0 0 29 0 29 0 28 4 29 1
Prairies 9396 1553 4706 10 4 10 24 1 4396 23 491 1 0 0 3 0 491 8 525 2 490 108 525 3
British Columbia 4045 765 3803 11 0 1 28 1 3803 36 734 5 2 3 6 0 734 16 734 10 693 160 693 0
Yukon 46 6 26 0 0 0 0 0 26 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 36 8 27 0 0 0 0 0 27 0 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 27 8 N.C. N.C.
Nunavut 95 13 61 0 0 0 0 0 61 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.
Territories 177 27 114 0 0 0 0 0 114 0 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 27 8 N.C. N.C.
CANADA 38153 6682 21711 26 7 44 92 5 20306 364 7586 14 6 12 17 47 7620 103 7632 33 5088 942 6142 16

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 October 14, 2023 (surveillance weeks 2023-35 to 2023-41)
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 3465 615 2186 0 0 1 1 0 2186 14 2186 2 5 3 26 0 2186 28 2186 5 2186 477 2186 5
Prince Edward Island 1228 143 153 0 0 1 1 0 153 0 55 0 0 0 2 0 54 4 44 0 54 29 54 0
Nova Scotia 9672 2537 3646 0 0 13 13 0 3646 28 266 11 1 1 2 0 266 11 259 1 266 89 266 0
New Brunswick 5686 840 3766 1 0 5 6 1 3693 17 400 6 1 0 2 0 400 7 400 0 400 112 400 1
Atlantic 20051 4135 9751 1 0 20 21 1 9678 59 2907 19 7 4 32 0 2906 50 2889 6 2906 707 2906 6
Région Nord-Est 11144 2045 7596 0 0 8 8 1 1682 34 408 6 3 2 13 0 408 12 406 6 N.C. N.C. 408 0
Québec-Chaudière-Appalaches 15624 2847 3632 0 0 14 14 2 3632 96 1653 8 1 1 5 0 1744 76 1653 19 N.C. N.C. 1653 2
Centre-du-Québec 14986 3151 2441 0 0 4 4 3 2435 67 196 6 2 2 3 0 196 7 196 3 N.C. N.C. 196 1
Montréal-Laval 23268 3860 8906 0 0 37 37 3 8063 184 4847 53 17 15 15 0 4847 74 4856 43 N.C. N.C. 4847 35
Ouest du Québec 12699 3215 3294 1 0 14 15 4 3289 82 132 5 3 1 4 0 132 7 132 3 N.C. N.C. 132 1
Montérégie 10706 2127 5481 0 0 10 10 5 5040 99 40 1 0 0 1 0 40 0 40 0 N.C. N.C. 40 0
Province of Québec 88427 17245 31350 1 0 87 88 18 24141 562 7276 79 26 21 41 0 7367 176 7283 74 N.C. N.C. 7276 39
P.H.O.L. - Ottawa 2807 1021 1524 1 0 1 2 0 1524 8 892 0 0 0 0 8 892 0 892 0 892 179 892 0
EORLA 8204 870 2788 0 0 7 7 1 2788 136 205 0 3 1 1 0 180 1 205 0 205 55 205 0
P.H.O.L. - Kingston 1995 538 820 0 0 0 0 0 820 1 634 0 0 0 0 19 634 1 634 0 634 151 634 1
UHN / Mount Sinai Hospital 6824 513 3734 0 0 4 4 4 3734 11 151 0 0 2 0 0 151 1 151 0 151 11 151 0
P.H.O.L. - Toronto 4075 1311 6090 44 19 2 45 0 6090 37 5541 0 0 0 0 171 5542 51 5538 21 5541 1288 5538 18
Sick Kids Hospital - Toronto 638 49 524 9 6 5 20 1 524 26 524 3 1 2 3 0 524 10 524 4 524 25 524 4
Shared Hospital Laboratory 7666 790 7666 8 12 0 20 2 7667 148 7665 0 0 0 0 67 7664 58 7674 8 6266 504 7674 12
P.H.O.L. - Sault Ste. Marie 92 65 100 0 0 0 0 0 100 0 51 0 0 0 0 0 51 0 51 0 51 12 51 0
P.H.O.L. - Timmins 178 32 143 0 0 0 0 0 143 2 128 0 0 0 0 8 128 2 128 0 128 18 128 0
St. Joseph's - London 5239 696 382 0 0 0 0 0 382 8 358 0 0 0 0 6 375 3 375 0 375 76 376 1
P.H.O.L. - London 3245 1044 2175 0 0 0 0 1 2175 13 1736 0 0 0 0 42 1736 10 1736 0 1736 340 1736 0
P.H.O.L. - Orillia 124 13 245 1 1 0 2 0 244 3 232 0 0 0 0 5 232 4 232 2 232 63 232 0
P.H.O.L. - Thunder Bay 428 162 227 0 0 0 0 0 227 0 167 0 0 0 0 5 167 1 167 1 167 32 167 1
P.H.O.L. - Sudbury 115 41 130 0 0 0 0 0 128 0 94 0 0 0 0 1 95 1 94 0 94 24 94 0
P.H.O.L. - Hamilton 1859 522 1404 1 1 0 1 0 1404 15 977 0 0 0 0 34 977 11 977 7 977 263 977 1
P.H.O.L. - Peterborough 519 171 423 0 0 0 0 1 423 25 376 0 0 0 0 9 376 4 376 1 376 116 376 2
St. Joseph's - Hamilton 11292 1228 9486 0 0 17 17 8 9486 131 9486 0 0 24 0 0 9486 57 9486 25 9486 967 0 0
Sault Area Hospital 700 84 528 0 1 0 1 0 521 2 437 0 0 2 0 0 437 5 437 0 437 91 447 0
Province of Ontario 56000 9150 38389 64 40 36 119 18 38380 566 29654 3 4 31 4 375 29647 220 29677 69 28272 4215 20202 40
Manitoba 10081 1707 7809 0 1 15 16 5 7809 18 434 0 4 4 13 0 434 27 722 0 434 200 722 3
Saskatchewan 11409 1303 5034 0 0 16 16 3 4870 26 2087 3 4 0 5 0 2087 61 2066 15 2037 466 2087 7
Alberta 31774 4584 20076 115 21 6 142 10 18605 69 5160 13 15 5 3 0 5160 50 5144 0 5072 932 5160 24
Prairies 53264 7594 32919 115 22 37 174 18 31284 113 7681 16 23 9 21 0 7681 138 7932 15 7543 1598 7969 34
British Columbia 23925 4881 21185 195 37 13 301 8 21168 122 4944 20 15 13 42 0 4944 109 4944 43 4707 1020 4684 16
Yukon 429 56 226 0 1 0 2 0 226 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 123 18 92 0 0 0 0 0 92 0 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 92 32 N.C. N.C.
Nunavut 581 76 402 0 0 0 0 0 402 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.
Territories 1133 150 720 0 1 0 2 0 720 1 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 92 32 N.C. N.C.
CANADA 242800 43155 134314 376 100 193 705 63 125371 1423 52462 137 75 78 140 375 52545 693 52725 207 43520 7572 43037 135

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 14.42 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 15.88 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 16.47 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 0.63 0.96 0.00 2.17 1.01 1.58 0.04 0.03 0.02 0.20 0.05 0.11 1.38 2.54 8.53 1.39 0.34 0.71
41 2023-10-14 17.51 16.59 0.42 1.42 0.03 2.66 1.05 1.56 0.02 0.01 0.03 0.36 0.03 0.16 1.79 3.65 9.54 1.74 0.58 1.03
42 2023-10-21 N.A. 15.39 N.A. 2.36 0.03 2.96 0.77 1.92 N.A. 0.05 0.02 0.45 0.05 0.25 N.A. 4.63 8.18 2.11 0.63 1.25
43 2023-10-28 N.A. 15.78 N.A. 5.47 0.03 5.19 0.68 2.59 N.A. 0.03 0.02 0.55 0.06 0.23 N.A. 6.76 8.11 2.16 0.55 1.41
44 2023-11-04 N.A. 13.91 N.A. 10.75 0.10 8.32 1.08 3.35 N.A. 0.03 0.10 0.71 0.12 0.31 N.A. 7.77 7.82 3.35 0.83 2.07
45 2023-11-11 N.A. 12.43 N.A. 16.19 0.07 9.83 1.18 4.19 N.A. 0.04 0.06 0.97 0.22 0.44 N.A. 7.68 7.03 4.43 1.29 2.71
46 2023-11-18 N.A. 11.96 N.A. 20.23 0.10 13.89 1.42 5.43 N.A. 0.05 0.06 1.49 0.09 0.57 N.A. 7.54 7.18 6.33 1.38 3.60
47 2023-11-25 N.A. 11.76 N.A. 24.27 0.13 15.25 1.25 6.91 N.A. 0.04 0.07 2.13 0.13 0.80 N.A. 6.66 8.10 8.69 1.79 4.79
48 2023-12-02 N.A. 12.12 N.A. 24.04 0.19 18.07 0.76 9.40 N.A. 0.03 0.15 3.18 0.08 1.20 N.A. 6.87 8.92 9.47 3.11 6.08
49 2023-12-09 N.A. 12.61 N.A. 21.12 0.23 19.13 1.43 11.34 N.A. 0.06 0.05 4.21 0.19 1.60 N.A. 7.29 10.09 12.26 5.40 7.54
50 2023-12-16 N.A. 13.10 N.A. 17.31 0.23 26.42 1.97 13.93 N.A. 0.06 0.02 7.50 0.15 2.48 N.A. 8.61 10.78 13.19 6.42 8.55
51 2023-12-23 N.A. 14.09 N.A. 12.50 0.18 28.53 2.27 16.69 N.A. 0.05 0.02 10.44 0.19 3.30 N.A. 9.16 8.97 15.23 7.40 9.92
52 2023-12-30 N.A. 15.53 N.A. 7.93 0.09 33.97 3.30 20.32 N.A. 0.07 0.01 12.58 0.23 4.04 N.A. 10.59 6.72 17.80 7.89 10.97
1 2024-01-06 N.A. 15.03 N.A. 4.54 0.08 30.93 4.58 19.59 N.A. 0.07 0.00 10.34 0.22 3.87 N.A. 10.34 5.26 15.62 8.37 10.84
2 2024-01-13 N.A. 13.38 N.A. 2.21 0.11 26.80 5.46 19.11 N.A. 0.05 0.01 11.01 0.29 3.91 N.A. 9.07 4.32 14.05 7.45 10.24
3 2024-01-20 N.A. 12.21 N.A. 1.40 0.04 28.20 9.13 18.95 N.A. 0.14 0.01 12.75 0.35 4.70 N.A. 8.43 3.42 15.56 7.90 10.95
4 2024-01-27 N.A. 11.30 N.A. 0.91 0.05 27.01 12.34 18.82 N.A. 0.14 0.00 12.74 0.41 5.17 N.A. 7.96 2.33 15.88 8.38 11.89
5 2024-02-03 N.A. 11.51 N.A. 0.76 0.03 23.66 15.78 19.15 N.A. 0.28 0.01 14.84 0.41 5.77 N.A. 7.15 2.19 16.33 8.77 12.14
6 2024-02-10 N.A. 11.88 N.A. 0.67 0.04 23.36 15.68 18.80 N.A. 0.34 0.01 16.23 0.44 6.22 N.A. 5.78 2.10 15.79 7.98 12.32
7 2024-02-17 N.A. 11.79 N.A. 0.57 0.02 24.22 15.48 18.53 N.A. 0.29 0.00 17.02 0.35 6.56 N.A. 5.13 2.16 15.53 8.42 11.89
8 2024-02-24 N.A. 11.73 N.A. 0.57 0.06 28.62 12.42 18.57 N.A. 0.49 0.02 16.79 0.45 6.61 N.A. 4.53 2.12 15.47 8.04 11.28
9 2024-03-02 N.A. 11.18 N.A. 0.63 0.12 29.30 11.04 18.13 N.A. 0.70 0.00 15.45 0.74 6.25 N.A. 3.70 2.50 15.62 7.59 10.52
10 2024-03-09 N.A. 11.41 N.A. 0.63 0.16 29.65 8.51 16.84 N.A. 0.77 0.00 14.86 0.81 6.42 N.A. 2.80 3.10 14.97 6.92 9.92
11 2024-03-16 N.A. 11.58 N.A. 0.52 0.26 24.27 6.74 14.55 N.A. 1.15 0.01 13.11 1.05 6.86 N.A. 2.18 3.71 12.11 6.29 9.33
12 2024-03-23 N.A. 11.28 N.A. 0.59 0.86 20.91 5.51 12.68 N.A. 1.29 0.00 11.53 1.51 7.43 N.A. 1.98 3.79 10.70 6.46 8.59
13 2024-03-30 N.A. 10.85 N.A. 0.64 1.52 18.09 4.67 11.66 N.A. 1.72 0.00 12.55 1.98 7.90 N.A. 1.63 4.00 9.32 6.45 8.11
14 2024-04-06 N.A. 10.91 N.A. 0.38 2.48 24.10 3.21 11.23 N.A. 1.84 0.01 13.12 2.14 7.89 N.A. 1.33 4.05 8.09 6.06 6.91
15 2024-04-13 N.A. 11.37 N.A. 0.59 3.84 17.75 2.18 8.72 N.A. 1.92 0.02 12.22 2.00 7.55 N.A. 1.40 3.46 7.73 5.34 6.34
16 2024-04-20 N.A. 10.93 N.A. 0.52 6.98 13.67 2.13 6.80 N.A. 1.86 0.01 11.94 2.56 7.68 N.A. 1.31 2.97 6.64 4.40 5.65
17 2024-04-27 N.A. 10.09 N.A. 0.48 9.67 11.31 1.28 5.34 N.A. 1.90 0.01 12.18 2.94 7.49 N.A. 1.14 2.84 5.79 3.89 4.80
18 2024-05-04 N.A. 9.85 N.A. 0.50 11.28 8.04 0.89 3.95 N.A. 1.82 0.01 10.20 2.65 6.31 N.A. 0.87 2.34 4.86 2.84 3.85
19 2024-05-11 N.A. 9.60 N.A. 0.67 12.58 8.22 0.90 3.25 N.A. 1.47 0.05 9.33 2.12 5.71 N.A. 0.74 2.40 4.61 2.44 3.31
20 2024-05-18 N.A. 9.32 N.A. 0.78 10.28 6.42 0.56 2.33 N.A. 1.29 0.07 7.59 1.12 4.89 N.A. 0.65 2.52 4.46 1.88 2.84
21 2024-05-25 N.A. 9.22 N.A. 0.51 9.73 4.40 0.12 1.67 N.A. 1.13 0.04 5.43 0.91 3.93 N.A. 0.41 2.25 4.10 1.23 2.26
22 2024-06-01 N.A. 8.45 N.A. 0.53 8.38 2.96 0.29 1.34 N.A. 1.02 0.06 3.51 0.53 2.51 N.A. 0.55 2.40 3.72 0.86 1.81
23 2024-06-08 N.A. 7.44 N.A. 0.64 6.88 2.55 0.56 1.07 N.A. 0.69 0.13 2.78 0.32 1.79 N.A. 0.41 2.10 3.38 0.77 1.66
24 2024-06-15 N.A. 6.70 N.A. 0.57 4.95 2.82 0.30 0.93 N.A. 0.47 0.06 2.11 0.27 1.32 N.A. 0.32 1.95 3.22 0.50 1.45
25 2024-06-22 N.A. 6.18 N.A. 0.60 2.95 2.78 0.32 0.97 N.A. 0.35 0.08 1.35 0.32 0.91 N.A. 0.34 1.82 2.91 0.42 1.12
26 2024-06-29 N.A. 5.79 N.A. 0.52 2.19 1.96 0.48 1.06 N.A. 0.19 0.06 1.08 0.21 0.73 N.A. 0.37 1.45 2.06 0.26 0.84
27 2024-07-06 N.A. 5.75 N.A. 0.40 1.19 1.79 0.30 1.02 N.A. 0.19 0.04 1.04 0.06 0.42 N.A. 0.33 1.47 1.85 0.30 0.90
28 2024-07-13 N.A. 6.14 N.A. 0.58 0.74 1.30 0.34 0.64 N.A. 0.22 0.05 0.59 0.00 0.26 N.A. 0.38 1.40 1.48 0.35 0.72
29 2024-07-20 N.A. 6.94 N.A. 0.45 0.63 1.38 0.45 0.90 N.A. 0.09 0.05 0.40 0.00 0.15 N.A. 0.48 1.48 1.28 0.11 0.48
30 2024-07-27 N.A. 7.69 N.A. 0.45 0.36 1.29 0.40 0.74 N.A. 0.04 0.02 0.30 0.06 0.15 N.A. 0.48 1.08 1.96 0.14 0.64
31 2024-08-03 N.A. 8.41 N.A. 0.38 0.26 1.57 0.40 0.92 N.A. 0.08 0.04 0.36 0.00 0.19 N.A. 0.48 1.18 1.42 0.31 0.69
32 2024-08-10 N.A. 9.39 N.A. 0.64 0.16 1.19 0.45 0.76 N.A. 0.06 0.02 0.32 0.00 0.15 N.A. 0.55 1.14 1.84 0.21 0.69
33 2024-08-17 N.A. 11.58 N.A. 0.56 0.16 1.51 0.32 0.69 N.A. 0.08 0.02 0.25 0.06 0.16 N.A. 0.43 1.39 1.96 0.25 0.78
34 2024-08-24 N.A. 13.40 N.A. 0.50 0.22 1.29 0.42 0.82 N.A. 0.05 0.00 0.29 0.00 0.10 N.A. 0.51 1.20 1.76 0.26 0.90
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 12.52 15.47 21.96 27.19 22.44 24.71 2.00 2.80 5.99 3.16 1.15 2.44 1.61 2.28 1.18 1.74 0.99 1.43 0.33 1.80 0.23 2.04 0.10 0.78 0.30 0.53 1.05 0.76 0.18 0.45
36 2023-09-09 14.84 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 1.61 3.02 5.97 3.26 1.65 2.40 1.47 2.10 0.81 2.44 1.38 1.86 0.38 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 19.99 23.50 33.19 39.57 32.80 35.83 1.76 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 0.45 0.32 0.67 1.36 0.06 0.43
39 2023-09-30 18.56 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 0.27 0.59 0.62 0.66 0.07 0.45
40 2023-10-07 17.65 19.32 26.26 41.29 33.00 35.43 1.40 3.69 8.19 3.28 1.90 2.43 1.36 1.79 1.31 2.25 1.39 1.82 0.32 1.49 0.16 0.92 0.05 0.34 0.27 0.93 0.57 1.08 0.22 0.59
41 2023-10-14 18.51 16.70 22.91 33.62 26.94 29.93 1.27 3.52 10.46 3.70 1.96 2.75 1.35 2.03 1.37 1.91 1.28 1.70 0.43 1.66 0.20 0.95 0.04 0.46 0.26 0.99 1.69 0.70 0.00 0.34
42 2023-10-21 N.A. 12.95 22.16 32.62 24.54 27.86 N.A. 4.22 10.01 3.89 2.64 3.21 N.A. 1.65 2.54 2.39 1.47 1.86 N.A. 1.58 0.15 0.89 0.15 0.40 N.A. 1.16 1.07 1.18 0.20 0.49
43 2023-10-28 N.A. 11.05 19.64 28.73 21.67 24.95 N.A. 4.41 9.38 3.98 3.18 3.54 N.A. 1.79 1.15 2.42 1.63 1.96 N.A. 1.79 0.36 1.64 0.12 0.58 N.A. 1.86 1.05 2.35 0.27 0.75
44 2023-11-04 N.A. 10.23 21.45 23.82 16.75 21.38 N.A. 4.14 10.28 4.81 2.94 3.72 N.A. 2.02 1.42 2.88 1.18 2.21 N.A. 1.79 0.77 1.08 0.23 0.48 N.A. 2.54 2.21 2.59 0.21 0.88
45 2023-11-11 N.A. 7.77 22.39 23.08 15.17 20.56 N.A. 3.90 9.97 5.42 2.53 4.01 N.A. 1.99 1.63 2.68 2.02 2.42 N.A. 2.06 0.64 1.30 0.04 0.77 N.A. 3.00 2.57 2.74 0.52 0.96
46 2023-11-18 N.A. 6.93 21.37 22.77 15.28 19.24 N.A. 3.97 8.29 5.72 1.62 4.14 N.A. 1.87 2.51 2.90 1.99 2.52 N.A. 1.89 0.99 1.43 0.18 0.81 N.A. 3.54 2.99 3.32 0.46 1.25
47 2023-11-25 N.A. 4.88 18.54 20.84 12.15 16.09 N.A. 3.63 7.04 7.00 2.36 4.72 N.A. 1.89 1.94 2.95 1.83 2.35 N.A. 1.78 1.01 2.02 0.09 0.90 N.A. 3.24 3.90 3.26 0.37 1.25
48 2023-12-02 N.A. 4.74 16.64 16.72 12.69 13.84 N.A. 3.04 5.78 6.14 3.03 4.18 N.A. 1.87 1.89 3.34 1.66 2.49 N.A. 1.86 1.48 1.94 0.31 1.09 N.A. 3.94 4.94 4.30 1.00 2.04
49 2023-12-09 N.A. 4.09 14.57 16.32 10.72 13.07 N.A. 3.03 3.97 5.65 2.94 4.19 N.A. 1.68 2.48 3.03 1.84 2.50 N.A. 1.93 1.22 2.80 0.49 1.48 N.A. 4.48 6.58 5.19 0.84 2.53
50 2023-12-16 N.A. 4.58 12.40 13.85 8.43 10.91 N.A. 2.98 3.23 5.95 2.54 4.22 N.A. 2.29 2.72 3.13 1.49 2.42 N.A. 1.92 1.08 3.32 0.46 1.68 N.A. 5.13 7.26 6.04 1.54 3.16
51 2023-12-23 N.A. 4.49 9.95 14.18 8.81 10.48 N.A. 3.09 3.01 6.71 2.94 3.95 N.A. 1.76 2.54 3.20 1.36 2.04 N.A. 2.23 1.20 4.39 0.37 2.47 N.A. 5.28 8.11 6.68 1.87 3.72
52 2023-12-30 N.A. 4.50 7.71 14.41 6.24 9.26 N.A. 3.32 2.13 5.08 2.87 3.75 N.A. 1.80 1.92 2.59 1.20 1.76 N.A. 2.75 1.00 3.81 0.41 2.49 N.A. 4.73 10.33 6.73 2.78 4.73
1 2024-01-06 N.A. 4.19 5.71 11.09 4.36 7.42 N.A. 3.63 1.84 5.08 2.68 3.34 N.A. 1.88 1.84 2.67 0.85 1.54 N.A. 2.94 0.72 4.45 0.28 2.74 N.A. 4.40 9.27 7.77 3.07 5.16
2 2024-01-13 N.A. 4.71 3.98 9.55 4.31 6.79 N.A. 3.24 1.19 4.12 2.46 3.05 N.A. 1.87 1.13 2.15 0.87 1.37 N.A. 2.61 0.38 4.76 0.42 2.69 N.A. 4.01 7.46 7.89 2.84 5.45
3 2024-01-20 N.A. 6.68 3.12 8.42 4.44 6.01 N.A. 2.92 0.76 3.25 2.59 2.82 N.A. 1.97 1.34 2.10 1.15 1.45 N.A. 2.56 0.24 5.56 0.47 3.18 N.A. 3.46 4.97 7.90 4.17 6.11
4 2024-01-27 N.A. 8.22 2.60 9.04 4.89 6.41 N.A. 2.78 0.64 3.12 1.77 2.55 N.A. 2.35 1.18 1.83 1.11 1.49 N.A. 2.71 0.23 5.19 0.55 3.05 N.A. 2.63 3.92 7.86 3.79 6.09
5 2024-02-03 N.A. 8.94 3.02 9.79 6.06 6.94 N.A. 2.70 0.48 3.48 1.70 2.39 N.A. 2.44 1.57 1.93 1.36 1.62 N.A. 2.96 0.25 5.70 0.58 3.34 N.A. 3.20 2.83 8.49 4.55 6.84
6 2024-02-10 N.A. 9.97 3.86 9.89 6.16 6.98 N.A. 2.68 0.51 2.89 1.57 2.19 N.A. 2.14 1.44 1.74 1.25 1.51 N.A. 3.73 0.42 5.57 0.65 3.48 N.A. 2.64 3.01 8.57 3.48 6.75
7 2024-02-17 N.A. 9.87 4.46 8.95 6.00 7.04 N.A. 2.63 0.44 3.20 1.42 2.11 N.A. 2.31 1.52 1.61 1.30 1.51 N.A. 4.41 0.44 6.05 1.45 3.96 N.A. 3.14 3.24 8.02 4.35 6.52
8 2024-02-24 N.A. 9.55 6.31 8.35 5.20 6.94 N.A. 2.55 0.73 3.21 1.31 2.25 N.A. 2.86 1.85 2.00 1.38 1.66 N.A. 4.29 0.53 5.74 1.19 4.19 N.A. 3.07 3.67 8.29 4.21 6.61
9 2024-03-02 N.A. 9.77 7.80 9.03 5.73 7.75 N.A. 3.07 0.60 3.35 1.41 2.44 N.A. 2.75 1.90 1.92 1.09 1.40 N.A. 4.72 0.40 6.42 1.87 4.46 N.A. 3.41 3.32 8.01 5.09 6.87
10 2024-03-09 N.A. 9.42 8.24 10.16 5.53 8.08 N.A. 2.77 0.68 4.18 1.19 2.69 N.A. 2.79 1.98 2.23 1.50 1.78 N.A. 5.05 0.51 6.74 2.26 4.94 N.A. 3.71 3.86 8.34 4.28 6.99
11 2024-03-16 N.A. 8.77 8.97 9.45 7.15 8.22 N.A. 3.48 0.66 4.58 1.35 3.00 N.A. 2.39 1.88 2.32 1.23 1.69 N.A. 5.07 0.59 7.94 2.52 4.87 N.A. 3.70 3.25 8.02 4.35 6.23
12 2024-03-23 N.A. 9.31 9.52 10.26 8.58 9.63 N.A. 2.98 1.05 4.95 1.26 3.33 N.A. 2.60 1.71 2.13 1.82 1.96 N.A. 5.40 0.77 6.69 3.65 5.35 N.A. 4.50 4.38 6.99 3.95 5.67
13 2024-03-30 N.A. 8.35 8.49 12.58 7.69 10.26 N.A. 3.17 1.39 5.21 1.48 3.68 N.A. 2.51 2.30 2.12 1.37 1.70 N.A. 4.79 1.28 6.90 3.95 5.27 N.A. 4.04 4.45 8.16 3.65 5.46
14 2024-04-06 N.A. 8.95 9.25 13.59 8.46 12.00 N.A. 3.45 1.18 6.26 1.67 4.30 N.A. 2.56 1.74 2.31 1.50 1.86 N.A. 4.61 1.45 7.70 4.14 5.99 N.A. 4.51 4.24 7.79 3.84 4.86
15 2024-04-13 N.A. 9.16 9.14 14.59 9.49 13.17 N.A. 3.83 1.35 6.94 1.97 4.61 N.A. 3.04 1.71 2.62 1.64 2.12 N.A. 4.09 1.52 7.47 3.81 6.11 N.A. 3.56 4.97 5.52 3.23 4.24
16 2024-04-20 N.A. 8.67 8.20 16.10 10.84 13.77 N.A. 3.89 2.19 7.88 1.97 5.20 N.A. 2.79 1.84 3.21 1.85 2.32 N.A. 3.93 2.18 7.16 3.71 6.04 N.A. 3.64 4.91 4.99 3.51 4.32
17 2024-04-27 N.A. 9.88 7.74 18.29 13.64 16.16 N.A. 4.07 1.78 8.67 2.07 6.01 N.A. 2.63 1.37 2.54 1.70 2.10 N.A. 3.53 2.40 6.58 4.68 5.77 N.A. 4.36 4.91 4.11 2.54 3.37
18 2024-05-04 N.A. 10.97 7.41 20.03 12.54 16.39 N.A. 4.84 2.07 8.21 3.19 5.80 N.A. 3.57 1.32 2.89 1.43 2.24 N.A. 3.15 2.55 6.37 3.14 5.22 N.A. 3.42 4.80 4.00 2.36 3.10
19 2024-05-11 N.A. 11.03 8.36 21.71 15.33 19.23 N.A. 4.11 2.71 9.24 3.67 5.98 N.A. 2.96 1.52 2.63 1.61 2.06 N.A. 2.51 3.63 7.46 3.23 4.86 N.A. 3.46 4.37 3.71 1.58 2.41
20 2024-05-18 N.A. 10.82 9.06 24.52 16.73 19.77 N.A. 4.14 3.29 8.60 3.90 6.75 N.A. 3.18 1.68 3.35 1.79 2.44 N.A. 1.79 4.79 6.85 2.55 5.12 N.A. 2.71 4.53 3.31 1.87 2.49
21 2024-05-25 N.A. 10.68 10.26 25.86 16.41 21.07 N.A. 4.33 3.47 9.56 6.00 7.27 N.A. 3.26 1.95 3.51 1.41 2.39 N.A. 1.44 5.69 6.80 3.22 4.69 N.A. 2.15 3.64 2.37 1.10 1.74
22 2024-06-01 N.A. 10.83 9.14 23.76 17.55 20.51 N.A. 5.12 3.32 8.71 5.94 6.99 N.A. 3.16 1.56 3.45 1.91 2.79 N.A. 1.23 5.22 5.39 2.43 3.89 N.A. 2.31 3.78 2.06 0.56 1.23
23 2024-06-08 N.A. 12.30 13.26 23.65 18.15 21.01 N.A. 4.42 4.59 9.74 5.14 6.94 N.A. 3.10 2.26 2.72 1.69 2.18 N.A. 1.41 5.35 4.49 2.25 3.25 N.A. 1.50 2.93 1.86 0.47 1.08
24 2024-06-15 N.A. 12.22 14.36 26.76 20.72 23.68 N.A. 4.26 4.70 8.25 5.76 7.01 N.A. 4.24 2.36 3.80 1.96 2.89 N.A. 0.97 6.29 3.48 1.85 2.72 N.A. 1.61 3.09 1.54 0.88 1.19
25 2024-06-22 N.A. 13.93 16.62 26.73 20.65 23.03 N.A. 4.37 5.58 7.61 4.34 6.13 N.A. 3.82 1.91 3.30 1.80 2.63 N.A. 0.82 6.96 4.18 0.89 2.13 N.A. 1.63 3.60 1.55 0.66 1.09
26 2024-06-29 N.A. 12.97 16.96 30.25 22.65 25.25 N.A. 4.22 5.11 8.72 4.97 6.42 N.A. 4.04 2.87 3.49 1.55 2.43 N.A. 1.02 6.29 4.28 0.60 2.07 N.A. 1.13 2.02 1.77 0.36 0.76
27 2024-07-06 N.A. 13.93 16.40 29.34 21.60 24.75 N.A. 4.90 5.67 8.37 3.78 6.04 N.A. 4.63 2.68 4.02 1.86 2.67 N.A. 0.76 7.22 2.35 1.08 1.73 N.A. 0.77 1.89 1.29 0.30 0.68
28 2024-07-13 N.A. 13.74 16.12 25.35 22.07 23.65 N.A. 4.09 5.78 8.38 3.40 5.36 N.A. 4.25 2.54 3.02 1.87 2.55 N.A. 0.52 4.88 2.28 0.44 1.32 N.A. 0.59 1.07 1.17 0.30 0.60
29 2024-07-20 N.A. 13.27 13.96 22.73 19.92 21.33 N.A. 4.04 4.49 6.57 3.76 4.83 N.A. 3.37 2.47 3.00 1.78 2.27 N.A. 0.75 3.65 1.58 0.66 1.03 N.A. 0.52 0.64 1.32 0.17 0.69
30 2024-07-27 N.A. 13.02 11.53 21.00 18.90 20.22 N.A. 3.43 4.87 7.25 2.75 4.60 N.A. 3.45 2.71 2.97 1.60 2.26 N.A. 0.41 4.03 1.47 0.24 0.91 N.A. 0.55 1.38 1.33 0.27 0.53
31 2024-08-03 N.A. 12.69 11.53 21.14 17.43 19.41 N.A. 3.14 4.70 6.03 2.95 4.17 N.A. 2.74 2.48 2.57 1.65 2.15 N.A. 0.18 3.06 1.35 0.71 1.04 N.A. 0.60 0.61 0.67 0.26 0.45
32 2024-08-10 N.A. 13.94 13.14 26.07 16.14 20.45 N.A. 3.28 4.31 4.64 1.86 3.02 N.A. 2.30 2.55 2.68 1.77 2.26 N.A. 0.41 3.40 1.11 0.17 0.64 N.A. 0.39 0.33 0.87 0.09 0.48
33 2024-08-17 N.A. 12.79 14.10 23.10 18.63 20.64 N.A. 2.91 3.41 3.75 1.79 2.73 N.A. 2.12 2.51 2.95 1.77 2.31 N.A. 0.34 2.97 1.10 0.07 0.59 N.A. 0.77 0.32 0.72 0.20 0.44
34 2024-08-24 N.A. 12.55 12.85 21.44 18.25 19.30 N.A. 2.15 2.46 3.86 2.31 3.05 N.A. 1.65 1.96 2.70 1.14 1.80 N.A. 0.27 2.88 1.06 0.08 0.55 N.A. 0.58 0.30 0.84 0.19 0.45

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 25622 14.42 2110 16.92 9351 16.30 6230 12.39 5158 10.66 2651 18.03 122 11.48
36 2023-09-09 28248 15.88 2346 20.20 10215 17.37 6939 15.46 5979 11.76 2640 16.70 129 17.05
37 2023-09-16 31751 16.47 2567 18.62 11678 18.11 7337 15.66 6909 12.03 3111 20.64 149 10.07
38 2023-09-23 36263 18.61 2775 18.38 13455 20.48 8514 18.38 7968 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 42176 19.81 3544 24.41 15685 22.19 9349 17.61 9196 15.96 4206 20.76 196 12.24
41 2023-10-14 38153 17.51 3583 20.74 12612 18.30 8340 15.42 9396 16.53 4045 18.91 177 15.25

Positive influenza (Flu) tests

Figure 4: Positive influenza (Flu) tests (%) in Canada by region by surveillance week
Figure 4
Figure 4: Positive influenza (Flu) tests (%) in Canada by region by surveillance week
Week Week end Can Tests Can A% Can B% Atl Tests Atl A% Atl B% QC Tests QC A% QC B% ON Tests ON A% ON B% Pr Tests Pr A% Pr B% BC Tests BC A% BC B% Terr Tests Terr A% Terr B%
35 2023-09-02 14536 0.69 0.06 984 0.00 0.00 3339 0.24 0.15 4324 0.39 0.09 3647 0.58 0.00 2158 2.46 0.00 84 2.38 0.00
36 2023-09-09 15421 0.43 0.06 1047 0.00 0.00 3649 0.19 0.03 4455 0.31 0.09 4060 0.37 0.05 2117 1.46 0.09 93 0.00 0.00
37 2023-09-16 18030 0.48 0.03 1216 0.08 0.00 4174 0.41 0.07 5145 0.29 0.00 4700 0.38 0.04 2703 1.29 0.04 92 0.00 0.00
38 2023-09-23 20116 0.51 0.02 1388 0.07 0.00 4734 0.30 0.00 5652 0.21 0.05 5320 0.62 0.02 2928 1.47 0.00 94 0.00 0.00
39 2023-09-30 21513 0.52 0.09 1403 0.14 0.07 4847 0.21 0.08 6186 0.37 0.11 5354 0.50 0.11 3598 1.36 0.06 125 0.00 0.00
40 2023-10-07 22987 0.63 0.04 1775 0.34 0.00 5628 0.37 0.04 6456 0.31 0.00 5132 0.70 0.12 3878 1.60 0.05 118 0.00 0.00
41 2023-10-14 21711 0.42 0.02 1938 0.57 0.00 4979 0.22 0.06 6171 0.29 0.00 4706 0.51 0.02 3803 0.74 0.03 114 0.00 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 16803 0.81 1201 0.25 3181 1.67 5138 1.01 4489 0.38 2702 0.41 92 0.00
38 2023-09-23 18777 1.15 1381 1.30 3652 2.27 5652 1.43 5070 0.37 2928 0.51 94 0.00
39 2023-09-30 20201 1.14 1392 0.79 3788 2.38 6186 1.42 5112 0.43 3598 0.56 125 0.00
40 2023-10-07 21329 1.38 1761 0.28 4333 2.72 6456 1.95 4783 0.38 3878 0.72 118 0.00
41 2023-10-14 20306 1.79 1927 0.83 3897 3.70 6169 2.35 4396 0.52 3803 0.95 114 0.00

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 6254 2.00 362 1.38 847 3.90 3406 1.85 1004 1.10 635 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 7407 1.61 401 2.49 1053 2.18 3886 1.34 1314 1.07 753 2.66
38 2023-09-23 8182 1.76 430 2.79 1122 2.85 4366 1.74 1488 0.87 776 1.42
39 2023-09-30 8615 1.32 401 1.25 1117 1.88 4948 1.33 1403 1.07 746 0.94
40 2023-10-07 8097 1.40 467 3.43 1177 2.04 4850 1.20 848 0.12 755 1.85
41 2023-10-14 7586 1.27 491 1.63 1092 1.37 4778 1.11 491 0.81 734 2.18

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 6258 1.61 362 1.93 851 2.70 3406 0.91 1004 2.39 635 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 7426 1.47 401 2.00 1071 2.43 3887 0.90 1314 1.98 753 1.86
38 2023-09-23 8192 0.93 429 1.17 1134 1.06 4365 0.62 1488 1.55 776 1.16
39 2023-09-30 8602 1.15 401 1.00 1129 2.04 4923 0.69 1403 1.64 746 2.01
40 2023-10-07 8115 1.36 467 2.36 1194 2.85 4851 0.66 848 1.42 755 2.78
41 2023-10-14 7620 1.35 491 1.63 1109 3.43 4795 0.69 491 1.63 734 2.18

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 6270 0.33 362 0.00 848 1.42 3407 0.21 1018 0.10 635 0.16
36 2023-09-09 6338 0.38 355 0.28 867 1.38 3423 0.20 1148 0.17 545 0.37
37 2023-09-16 7443 0.38 401 0.50 1053 0.76 3886 0.36 1350 0.00 753 0.53
38 2023-09-23 8237 0.38 429 0.00 1124 1.07 4365 0.14 1543 0.13 776 1.42
39 2023-09-30 8668 0.51 401 0.25 1118 0.89 4948 0.36 1455 0.34 746 1.34
40 2023-10-07 8137 0.32 457 0.44 1179 0.76 4853 0.14 893 0.34 755 0.66
41 2023-10-14 7632 0.43 484 0.00 1094 1.01 4795 0.21 525 0.38 734 1.36

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 5350 12.52 362 20.72 - - 3409 10.44 971 14.73 608 15.79
36 2023-09-09 5398 14.84 355 25.35 - - 3423 12.80 1103 16.77 516 17.05
37 2023-09-16 6300 18.29 401 23.69 - - 3887 16.08 1283 22.45 722 19.81
38 2023-09-23 7034 19.99 429 27.51 - - 4365 17.11 1471 23.73 747 24.63
39 2023-09-30 7467 18.56 401 26.43 - - 4948 15.74 1386 22.44 715 25.31
40 2023-10-07 6883 17.65 467 23.55 - - 4853 14.77 839 25.51 706 23.80
41 2023-10-14 5088 18.51 491 23.01 - - 3387 16.33 490 22.04 693 23.09

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 5074 0.30 362 0.00 847 0.47 2230 0.13 1027 0.68 608 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 6162 0.23 401 0.50 1053 0.47 2636 0.23 1350 0.00 722 0.14
38 2023-09-23 6839 0.45 429 0.00 1122 0.80 2995 0.40 1546 0.39 747 0.54
39 2023-09-30 7014 0.27 401 0.00 1117 0.45 3325 0.21 1456 0.41 715 0.14
40 2023-10-07 6611 0.27 467 0.21 1177 0.08 3390 0.18 894 0.34 683 1.02
41 2023-10-14 6142 0.26 491 0.20 1092 0.73 3341 0.12 525 0.57 693 0.00

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