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Respiratory Virus Report, Week 17 - ending April 29, 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 17 (week ending April 29, 2023) in Canada, participating RVDSS laboratories reported 3,805 detections of SARS-CoV-2 from 37,889 tests (10.0% positive). Among non-SARS-CoV-2 respiratory viruses, where test volumes are lower (range of 5,917 to 19,982 tests), activity of nearly all viruses is within or below expected levels.

  • Activity of influenza remains low at inter-seasonal levels.
      • Influenza B activity remains slightly below expected levels (362 detections; 1.8% positive). Influenza A activity is lower and far below expected levels (86 detections; 0.4% positive).
  • Activity of all other non-SARS-CoV-2 respiratory viruses is near or below 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 April 29, 2023 (surveillance week 2023-17)
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 482 46 324 0 0 0 0 1 324 24 324 7 0 18 5 0 324 7 324 10 324 37 324 28
Prince Edward Island 172 25 57 0 0 0 0 0 57 1 4 0 0 0 0 0 4 0 4 0 4 0 4 1
Nova Scotia 1342 210 735 0 0 4 4 0 735 8 33 0 0 0 0 0 33 1 33 5 33 11 33 1
New Brunswick 704 84 655 1 0 0 1 2 639 3 82 2 1 3 0 0 82 6 82 2 82 19 82 5
Atlantic 2700 365 1771 1 0 4 5 3 1755 36 443 9 1 21 5 0 443 14 443 17 443 67 443 35
Région Nord-Est 1804 180 1305 0 0 6 6 4 272 6 58 2 0 3 0 0 58 9 58 1 N.C. N.C. 58 5
Québec-Chaudière-Appalaches 2771 208 497 0 0 6 6 13 480 12 173 1 0 3 1 0 181 22 173 4 N.C. N.C. 173 5
Centre-du-Québec 3147 420 264 0 0 2 2 11 261 13 21 0 0 3 0 0 21 0 21 1 N.C. N.C. 21 1
Montréal-Laval 3074 259 2410 0 0 19 19 91 1420 24 517 0 0 12 3 0 517 25 519 12 N.C. N.C. 517 11
Ouest du Québec 1822 140 528 0 0 2 2 24 522 8 26 1 0 1 0 0 26 0 26 1 N.C. N.C. 26 0
Montérégie 2607 198 1002 0 0 8 8 28 818 12 3 0 0 0 0 0 3 0 3 0 N.C. N.C. 3 0
Province of Québec 15225 1405 6006 0 0 43 43 171 3773 75 798 4 0 22 4 0 806 56 800 19 N.C. N.C. 798 22
P.H.O.L. - Ottawa 262 78 105 0 0 0 0 0 105 0 78 0 0 0 0 8 78 0 78 4 78 7 78 8
EORLA 1582 75 350 0 0 0 0 7 350 2 21 1 0 1 0 0 21 0 21 0 21 2 21 4
P.H.O.L. - Kingston 377 55 94 0 0 0 0 0 94 0 63 0 0 0 0 11 63 0 63 4 63 8 63 8
UHN / Mount Sinai Hospital 1474 77 539 0 0 0 0 3 539 3 34 1 0 7 0 0 34 0 34 0 34 0 34 3
P.H.O.L. - Toronto 410 62 676 2 0 0 1 4 676 8 631 0 0 0 0 35 631 13 631 41 631 69 631 47
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 1495 59 1495 3 2 1 6 16 1495 4 1500 0 0 0 0 19 1500 20 1504 33 1504 73 1504 31
P.H.O.L. - Sault Ste. Marie 16 0 3 0 0 0 0 0 3 0 3 0 0 0 0 0 3 0 3 0 3 0 3 0
P.H.O.L. - Timmins 84 5 15 0 0 0 0 0 15 0 15 0 0 0 0 0 15 0 15 2 15 0 15 3
St. Joseph's - London 1099 68 582 0 0 0 0 3 582 2 69 0 0 0 0 1 69 0 69 5 69 7 69 5
P.H.O.L. - London 398 87 180 0 0 0 0 1 180 1 149 0 0 0 0 8 149 4 149 9 149 16 149 4
P.H.O.L. - Orillia 3 0 21 0 0 0 0 1 21 0 21 0 0 0 0 2 21 0 21 3 21 2 21 1
P.H.O.L. - Thunder Bay 77 7 24 0 0 0 0 0 24 0 21 0 0 0 0 1 21 0 21 2 21 6 21 0
P.H.O.L. - Sudbury 13 0 12 0 0 0 0 0 12 1 12 0 0 0 0 0 12 0 12 3 12 0 12 0
P.H.O.L. - Hamilton 245 52 148 0 0 0 0 1 148 0 130 0 0 0 0 7 130 5 130 9 130 16 130 6
P.H.O.L. - Peterborough 59 13 40 0 0 0 0 2 40 0 35 0 0 0 0 1 35 0 35 2 35 5 35 0
St. Joseph's - Hamilton 1411 67 1200 0 0 0 0 55 1200 2 1200 0 0 14 0 0 1200 25 1200 32 1200 87 0 0
Sault Area Hospital 77 8 77 0 0 0 0 0 77 4 44 0 0 0 0 0 44 1 44 0 44 4 44 0
Province of Ontario 9082 713 5561 5 2 1 7 93 5561 27 4026 2 0 22 0 93 4026 68 4030 149 4030 302 2830 120
Manitoba 1325 138 1092 0 0 2 2 12 1092 15 92 1 3 1 0 0 92 1 115 5 92 26 115 4
Saskatchewan 1839 162 649 0 0 9 9 6 553 5 247 9 7 3 7 0 246 6 246 6 246 33 247 14
Alberta 3917 361 2550 10 0 5 15 58 2418 6 907 8 2 11 9 0 906 11 906 16 890 103 907 33
Prairies 7081 661 4291 10 0 16 26 76 4063 26 1246 18 12 15 16 0 1244 18 1267 27 1228 162 1269 51
British Columbia 3629 656 2233 3 0 0 4 7 2067 34 597 10 3 23 1 0 597 30 597 34 577 87 577 31
Yukon 42 3 19 0 0 0 0 0 19 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 18 0 15 0 0 0 0 0 15 0 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 15 3 N.C. N.C.
Nunavut 112 2 86 1 0 0 1 12 86 5 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 172 5 120 1 0 0 1 12 120 6 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 15 3 N.C. N.C.
CANADA 37889 3805 19982 20 2 64 86 362 17339 204 7110 43 16 103 26 93 7116 186 7137 246 6293 621 5917 259

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 28, 2022 to April 29, 2023 (surveillance weeks 2022-35 to 2023-17)
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 20014 3629 11495 1 246 672 919 6 11495 547 11495 47 30 348 64 0 11495 221 11495 370 11495 955 11495 431
Prince Edward Island 32627 7223 3915 1 119 247 367 3 3915 380 1132 19 27 78 7 0 1132 71 1132 37 1132 334 1132 35
Nova Scotia 125325 24682 39432 0 4 3638 3642 9 39422 2392 1244 6 16 29 4 0 1250 45 1240 43 1250 230 1250 53
New Brunswick 104338 15414 46404 19 133 4432 4584 22 38439 2035 3376 19 29 147 8 0 3376 237 3376 172 3376 613 3321 217
Atlantic 282304 50948 101246 21 502 8989 9512 40 93271 5354 17247 91 102 602 83 0 17253 574 17243 622 17253 2132 17198 736
Région Nord-Est 87401 10762 50573 0 4 3816 3820 58 15652 1366 1434 23 5 81 0 0 1435 120 1426 90 N.C. N.C. 1435 103
Québec-Chaudière-Appalaches 183284 17670 24554 0 0 2875 2875 107 23886 1901 6860 23 5 82 5 0 7318 597 6860 332 N.C. N.C. 6860 334
Centre-du-Québec 147597 20455 15164 0 0 1779 1779 75 13423 980 964 13 0 47 5 0 964 111 964 72 N.C. N.C. 964 70
Montréal-Laval 200966 25131 95558 0 9 6209 6218 1247 51418 2693 20956 132 19 458 20 0 20965 942 21099 754 N.C. N.C. 20641 755
Ouest du Québec 112004 14513 22563 0 7 2190 2197 134 20294 1314 1016 21 0 65 2 0 1015 187 1016 59 N.C. N.C. 1017 62
Montérégie 142163 16285 27042 0 0 1795 1795 175 24602 1174 136 0 0 2 0 0 136 4 136 6 N.C. N.C. 136 3
Province of Québec 873415 104816 235454 0 20 18664 18684 1796 149275 9428 31366 212 29 735 32 0 31833 1961 31501 1313 N.C. N.C. 31053 1327
P.H.O.L. - Ottawa 28459 7149 5410 17 136 66 214 2 5410 353 3786 0 0 0 0 96 3786 16 3786 111 3786 345 3786 177
EORLA 86318 8532 15695 0 0 1406 1406 36 15695 1291 1271 10 3 54 16 0 1271 51 1271 58 1271 285 1271 90
P.H.O.L. - Kingston 29325 4795 2883 5 92 38 135 2 2882 180 2344 0 0 0 0 94 2345 28 2345 75 2344 301 2345 88
UHN / Mount Sinai Hospital 94134 7216 22066 7 43 348 398 51 22066 301 2053 1 2 30 1 0 2020 7 2053 15 2053 66 2053 85
P.H.O.L. - Toronto 50759 10757 26985 114 2411 148 1129 36 26955 1334 23784 0 0 0 0 926 23788 452 23784 845 23784 2181 23784 1164
Sick Kids Hospital - Toronto 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Shared Hospital Laboratory 82503 5834 82504 117 1470 726 2313 249 82505 2204 59770 4 0 16 0 646 59783 599 60051 893 59999 2024 59891 953
P.H.O.L. - Sault Ste. Marie 1726 328 670 1 52 15 58 0 670 25 596 0 0 0 0 51 596 4 596 30 596 43 596 44
P.H.O.L. - Timmins 8957 842 989 0 161 6 156 0 987 98 937 0 0 0 0 53 937 14 937 25 937 83 937 40
St. Joseph's - London 121116 14988 20320 0 0 886 886 62 20320 1015 2089 0 0 0 0 75 2123 71 2123 61 2123 304 1711 99
P.H.O.L. - London 36495 7720 10893 13 585 63 643 20 10892 879 8713 0 0 0 0 419 8714 116 8714 216 8713 836 8714 301
P.H.O.L. - Orillia 562 261 2283 6 261 23 290 7 2283 230 2210 0 0 0 0 126 2211 56 2210 78 2210 313 2210 104
P.H.O.L. - Thunder Bay 8398 1703 1048 0 107 3 110 0 1047 96 923 0 0 0 0 37 923 18 923 26 923 108 924 37
P.H.O.L. - Sudbury 2061 300 766 1 65 14 67 0 766 78 656 0 0 0 0 29 656 7 656 44 656 38 656 25
P.H.O.L. - Hamilton 25455 6805 9018 7 301 92 399 28 9015 551 6557 0 0 0 0 249 6559 127 6557 221 6557 627 6557 271
P.H.O.L. - Peterborough 5147 995 1381 0 67 11 78 5 1381 113 1090 0 0 0 0 40 1090 14 1090 39 1090 161 1090 38
St. Joseph's - Hamilton 95037 13343 45765 0 0 2726 2726 361 45765 2275 45765 0 0 991 0 0 45765 579 45765 846 45765 3069 0 0
Sault Area Hospital 12191 2098 8107 1 262 258 521 3 8107 165 2607 35 5 64 4 0 2607 43 2607 99 2607 249 2607 78
Province of Ontario 688643 93666 256783 289 6013 6829 11529 862 256746 11188 165151 50 10 1155 21 2841 165174 2202 165468 3682 165414 11033 119132 3594
Manitoba 68007 11378 39686 17 202 1788 2007 33 39686 1763 5147 31 27 168 6 0 5137 130 5412 210 5147 740 5412 211
Saskatchewan 162571 13229 39934 2 41 3877 3920 56 32026 2206 13284 89 78 522 36 0 13286 342 13288 647 13286 1364 13282 486
Alberta 226842 32946 124063 986 7294 2818 11098 565 109398 7637 43376 320 99 915 112 0 43360 585 43314 1252 42633 3939 43376 1212
Prairies 457420 57553 203683 1005 7537 8483 17025 654 181110 11606 61807 440 204 1605 154 0 61783 1057 62014 2109 61066 6043 62070 1909
British Columbia 227254 24233 126763 400 4352 303 8885 275 118778 8186 27244 234 188 1050 154 6 27254 780 27254 1066 26398 4064 26395 1050
Yukon 5044 385 870 2 136 0 138 9 868 59 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 1595 186 1448 2 147 1 150 4 1448 101 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 1448 290 N.C. N.C.
Nunavut 4536 382 2489 4 230 3 237 137 2489 122 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 11175 953 4807 8 513 4 525 150 4805 282 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 1448 290 N.C. N.C.
CANADA 2540211 332169 928736 1723 18937 43272 66160 3777 803985 46044 302815 1027 533 5147 444 2847 303297 6574 303480 8792 271579 23562 255848 8616

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 appropriate 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 2022-2023 SARS-CoV-2% 2022-2023 A% 2021-2022 A% 2020-2021 A% Max A% Base Min A% Base Av A% Base 2022-2023 B% 2021-2022 B% 2020-2021 B% Max B% Base Min B% Base Av B% Base 2022-2023 RSV% 2021-2022 RSV% 2020-2021 RSV% Max RSV% Base Min RSV% Base Av RSV% Base
35 2022-09-03 13.40 0.18 0.04 0.00 1.60 0.11 0.68 0.02 0.00 0.02 0.28 0.00 0.13 1.14 4.43 0.02 1.34 0.38 0.60
36 2022-09-10 13.07 0.14 0.01 0.00 2.11 0.23 0.98 0.04 0.00 0.00 0.55 0.00 0.15 1.12 6.61 0.04 1.09 0.22 0.57
37 2022-09-17 12.73 0.24 0.03 0.00 1.59 0.36 0.87 0.01 0.00 0.00 0.19 0.04 0.12 1.05 7.59 0.02 1.37 0.31 0.64
38 2022-09-24 13.61 0.48 0.00 0.02 2.15 0.43 1.16 0.02 0.00 0.00 0.21 0.00 0.14 1.40 7.16 0.10 1.24 0.37 0.64
39 2022-10-01 14.45 0.68 0.01 0.00 2.65 0.57 1.53 0.03 0.00 0.00 0.29 0.09 0.18 2.11 8.48 0.05 1.29 0.41 0.68
40 2022-10-08 15.06 0.99 0.00 0.00 2.17 1.01 1.58 0.03 0.02 0.00 0.20 0.05 0.11 2.44 8.53 0.07 1.39 0.34 0.67
41 2022-10-15 16.58 1.44 0.03 0.01 2.66 1.05 1.57 0.01 0.03 0.00 0.36 0.03 0.16 3.52 9.54 0.10 1.74 0.58 0.98
42 2022-10-22 15.39 2.39 0.03 0.00 2.96 0.77 1.92 0.05 0.02 0.00 0.45 0.05 0.25 4.56 8.18 0.07 2.11 0.63 1.14
43 2022-10-29 15.78 5.54 0.03 0.01 5.23 0.68 2.60 0.03 0.02 0.00 0.55 0.06 0.23 6.59 8.11 0.07 2.16 0.55 1.32
44 2022-11-05 13.91 10.91 0.10 0.04 8.42 1.08 3.39 0.03 0.10 0.03 0.71 0.12 0.31 7.63 7.82 0.05 3.35 0.83 1.92
45 2022-11-12 12.43 16.20 0.07 0.02 9.83 1.18 4.19 0.04 0.06 0.02 0.97 0.22 0.44 7.54 7.03 0.04 4.43 1.29 2.59
46 2022-11-19 11.97 20.15 0.10 0.03 13.95 1.42 5.47 0.05 0.06 0.01 1.49 0.09 0.58 7.51 7.18 0.06 6.33 1.38 3.29
47 2022-11-26 11.76 24.06 0.13 0.03 15.24 1.25 6.91 0.04 0.07 0.04 2.13 0.13 0.80 6.65 8.10 0.03 8.69 1.79 4.46
48 2022-12-03 12.12 23.83 0.19 0.04 18.07 0.76 9.40 0.03 0.15 0.01 3.18 0.08 1.20 6.93 8.92 0.02 9.47 3.11 5.72
49 2022-12-10 12.63 20.95 0.23 0.03 19.52 1.43 11.41 0.06 0.05 0.01 4.21 0.19 1.60 7.36 10.09 0.06 12.26 4.87 7.12
50 2022-12-17 13.10 17.20 0.23 0.01 26.42 1.97 14.27 0.07 0.02 0.01 7.95 0.15 2.55 8.71 10.78 0.07 13.19 5.39 7.93
51 2022-12-24 14.15 12.50 0.18 0.00 28.53 2.27 16.81 0.05 0.02 0.01 10.44 0.19 3.30 9.26 8.97 0.07 15.23 6.52 9.27
52 2022-12-31 15.61 7.97 0.09 0.00 33.97 3.30 20.41 0.07 0.01 0.00 12.73 0.23 4.07 10.69 6.72 0.01 17.80 6.83 10.39
1 2023-01-07 15.09 4.59 0.08 0.00 30.93 4.58 19.55 0.07 0.00 0.00 10.34 0.22 3.86 10.40 5.26 0.04 15.62 7.12 10.17
2 2023-01-14 13.41 2.24 0.11 0.00 26.80 5.46 19.10 0.05 0.01 0.00 11.01 0.29 3.91 9.12 4.32 0.07 14.05 6.60 9.63
3 2023-01-21 12.26 1.39 0.04 0.01 28.20 9.13 18.94 0.14 0.01 0.01 12.75 0.35 4.69 8.47 3.42 0.03 15.56 6.72 10.32
4 2023-01-28 11.35 0.91 0.05 0.00 27.01 12.34 18.81 0.15 0.00 0.00 12.74 0.41 5.15 7.97 2.33 0.05 15.88 7.02 11.23
5 2023-02-04 11.56 0.75 0.03 0.00 23.66 15.78 19.14 0.28 0.01 0.00 14.84 0.41 5.76 7.18 2.19 0.04 16.33 7.17 11.49
6 2023-02-11 11.92 0.68 0.04 0.02 23.36 15.63 18.79 0.34 0.01 0.00 16.23 0.44 6.21 5.79 2.10 0.08 15.79 6.52 11.70
7 2023-02-18 11.78 0.55 0.02 0.00 24.22 15.48 18.52 0.29 0.00 0.00 17.02 0.35 6.54 5.13 2.16 0.02 15.53 6.95 11.26
8 2023-02-25 11.78 0.57 0.06 0.00 28.62 12.42 18.53 0.50 0.02 0.00 16.79 0.45 6.60 4.54 2.12 0.05 15.47 6.64 10.63
9 2023-03-04 11.19 0.63 0.12 0.00 29.30 11.04 18.35 0.70 0.00 0.00 15.45 0.74 6.24 3.73 2.50 0.01 15.62 6.54 10.04
10 2023-03-11 11.45 0.62 0.16 0.00 29.65 8.51 16.81 0.78 0.00 0.00 14.86 0.81 6.41 2.82 3.10 0.00 14.97 6.35 9.37
11 2023-03-18 11.59 0.53 0.26 0.01 24.27 6.74 14.55 1.14 0.01 0.00 13.11 1.05 6.86 2.18 3.71 0.03 12.11 6.29 8.83
12 2023-03-25 11.28 0.60 0.86 0.00 20.91 5.51 12.67 1.29 0.00 0.00 11.53 1.51 7.43 1.97 3.79 0.07 10.70 6.46 8.12
13 2023-04-01 10.83 0.64 1.52 0.00 18.09 4.67 11.66 1.74 0.00 0.00 12.55 1.98 7.90 1.64 4.00 0.04 9.32 6.45 7.64
14 2023-04-08 10.90 0.38 2.48 0.00 17.83 3.21 9.98 1.85 0.01 0.00 13.12 2.12 7.88 1.34 4.05 0.08 8.09 5.32 6.44
15 2023-04-15 11.34 0.60 3.84 0.01 17.75 2.18 8.72 1.92 0.02 0.00 12.22 2.00 7.55 1.42 3.46 0.11 7.73 4.64 5.97
16 2023-04-22 10.89 0.53 6.98 0.00 13.67 2.13 6.80 1.80 0.01 0.00 11.94 2.56 7.68 1.38 2.97 0.23 6.64 4.40 5.40
17 2023-04-29 10.04 0.43 9.67 0.00 11.31 1.28 5.34 1.81 0.01 0.00 12.18 2.94 7.49 1.18 2.84 0.21 5.79 3.52 4.58
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 2022-2023 EV/RV% 2021-2022 EV/RV% 2020-2021 EV/RV% Max EV/RV% Base Min EV/RV% Base Av EV/RV% Base 2022-2023 HPIV% 2021-2022 HPIV% 2020-2021 HPIV% Max HPIV% Base Min HPIV% Base Av HPIV% Base 2022-2023 ADV% 2021-2022 ADV% 2020-2021 ADV% Max ADV% Base Min ADV% Base Av ADV% Base 2022-2023 HMPV% 2021-2022 HMPV% 2020-2021 HMPV% Max HMPV% Base Min HMPV% Base Av HMPV% Base 2022-2023 HCoV% 2021-2022 HCoV% 2020-2021 HCoV% Max HCoV% Base Min HCoV% Base Av HCoV% Base
35 2022-09-03 15.47 21.96 9.07 27.19 22.44 24.78 2.80 5.99 0.08 3.16 1.15 2.42 2.28 1.18 0.27 1.74 0.99 1.43 1.80 0.23 0.17 2.04 0.10 0.77 0.53 1.05 0.06 0.76 0.18 0.45
36 2022-09-10 16.22 18.59 8.13 30.69 23.30 26.31 3.21 4.93 0.20 3.31 1.35 2.32 2.19 1.15 0.40 2.85 1.42 1.87 1.81 0.24 0.06 0.84 0.10 0.48 0.38 0.62 0.00 0.38 0.12 0.22
37 2022-09-17 21.73 27.46 8.07 33.58 27.74 31.68 3.02 5.97 0.13 3.26 1.65 2.40 2.10 0.81 0.35 2.44 1.38 1.86 1.38 0.17 0.05 1.61 0.00 0.51 0.28 0.44 0.05 0.56 0.00 0.26
38 2022-09-24 23.50 33.19 15.67 39.57 32.80 35.33 2.40 4.73 0.07 2.87 1.92 2.33 1.59 0.82 0.58 2.04 1.11 1.63 1.61 0.37 0.02 1.43 0.06 0.47 0.32 0.67 0.00 1.36 0.06 0.43
39 2022-10-01 22.89 30.01 24.12 40.59 34.87 37.68 3.10 8.12 0.02 3.01 1.70 2.24 2.21 1.14 0.19 2.27 1.04 1.66 1.43 0.17 0.04 0.72 0.05 0.28 0.59 0.62 0.05 0.66 0.07 0.45
40 2022-10-08 19.32 26.26 16.62 41.29 33.00 35.43 3.70 8.19 0.02 3.28 1.90 2.43 1.80 1.31 0.44 2.25 1.39 1.82 1.43 0.16 0.00 0.92 0.05 0.34 0.93 0.57 0.09 1.08 0.22 0.58
41 2022-10-15 16.70 22.91 15.48 33.62 26.94 29.81 3.52 10.46 0.06 3.70 1.94 2.74 2.03 1.37 0.37 1.91 1.28 1.70 1.66 0.20 0.19 0.95 0.04 0.46 1.00 1.69 0.02 0.70 0.00 0.33
42 2022-10-22 12.95 22.16 13.60 32.62 24.54 27.82 4.21 10.01 0.06 3.89 2.64 3.20 1.67 2.54 0.47 2.38 1.47 1.86 1.59 0.15 0.06 0.89 0.15 0.38 1.16 1.07 0.00 1.18 0.20 0.49
43 2022-10-29 11.05 19.64 13.14 28.73 21.67 24.95 4.41 9.38 0.07 3.98 3.18 3.56 1.79 1.15 0.37 2.42 1.63 1.96 1.78 0.36 0.02 1.64 0.12 0.57 1.86 1.05 0.00 2.35 0.27 0.75
44 2022-11-05 10.23 21.45 9.23 23.82 16.75 21.34 4.14 10.28 0.03 4.81 2.94 3.70 2.02 1.42 0.22 2.88 1.18 2.20 1.79 0.77 0.13 1.08 0.23 0.47 2.54 2.21 0.00 2.59 0.21 0.88
45 2022-11-12 7.77 22.39 9.70 23.08 15.17 20.56 3.90 9.97 0.01 5.42 2.53 4.01 1.99 1.63 0.33 2.68 2.02 2.42 2.06 0.64 0.01 1.30 0.04 0.77 3.00 2.57 0.03 2.74 0.52 0.96
46 2022-11-19 6.93 21.37 9.02 22.77 15.28 19.27 3.97 8.29 0.04 5.72 1.62 4.19 1.87 2.51 0.30 2.90 1.99 2.53 1.89 0.99 0.04 1.43 0.18 0.79 3.54 2.99 0.03 3.32 0.46 1.25
47 2022-11-26 4.88 18.54 8.44 20.84 12.15 16.09 3.63 7.04 0.06 7.00 2.36 4.72 1.89 1.94 0.32 2.95 1.83 2.35 1.78 1.01 0.02 2.02 0.09 0.89 3.24 3.90 0.04 3.26 0.37 1.25
48 2022-12-03 4.74 16.64 7.94 16.72 12.69 13.83 3.04 5.78 0.02 6.14 3.03 4.18 1.87 1.89 0.35 3.34 1.66 2.48 1.86 1.48 0.02 1.94 0.31 1.08 3.94 4.94 0.02 4.30 1.00 2.04
49 2022-12-10 4.09 14.57 6.21 16.32 10.72 13.07 3.03 3.97 0.00 5.65 2.94 4.19 1.68 2.48 0.54 3.03 1.84 2.49 1.93 1.22 0.05 2.80 0.49 1.46 4.48 6.58 0.05 5.19 0.84 2.52
50 2022-12-17 4.58 12.40 6.62 13.85 8.43 10.90 2.98 3.23 0.06 5.95 2.54 4.27 2.29 2.72 0.51 3.27 1.49 2.45 1.92 1.08 0.02 3.32 0.46 1.70 5.13 7.26 0.11 6.04 1.54 3.16
51 2022-12-24 4.49 9.95 5.65 14.18 8.81 10.48 3.09 3.01 0.04 6.71 2.94 3.95 1.76 2.54 0.58 3.20 1.36 2.04 2.23 1.20 0.04 4.39 0.37 2.44 5.28 8.11 0.05 6.68 1.87 3.72
52 2022-12-31 4.50 7.71 6.53 14.41 6.24 9.23 3.32 2.13 0.03 5.08 2.87 3.75 1.80 1.92 0.48 2.59 1.20 1.76 2.75 1.00 0.11 3.81 0.41 2.44 4.73 10.33 0.07 6.73 2.78 4.75
1 2023-01-07 4.19 5.71 5.43 11.09 4.36 7.42 3.63 1.84 0.12 5.08 2.68 3.34 1.88 1.84 0.81 2.67 0.85 1.54 2.94 0.72 0.06 4.45 0.28 2.70 4.40 9.27 0.12 7.77 3.07 5.16
2 2023-01-14 4.71 3.98 5.18 9.55 4.31 6.79 3.24 1.19 0.08 4.12 2.46 3.05 1.87 1.13 0.82 2.15 0.87 1.37 2.61 0.38 0.03 4.76 0.42 2.66 4.01 7.46 0.16 7.89 2.84 5.44
3 2023-01-21 6.68 3.12 3.56 8.42 4.44 6.01 2.92 0.76 0.05 3.25 2.59 2.82 1.97 1.34 0.40 2.10 1.15 1.45 2.56 0.24 0.11 5.56 0.47 3.13 3.46 4.97 0.26 7.90 4.17 6.11
4 2023-01-28 8.22 2.60 3.87 9.04 4.89 6.41 2.78 0.64 0.06 3.12 1.77 2.55 2.35 1.18 0.46 1.83 1.11 1.49 2.71 0.23 0.12 5.19 0.55 3.01 2.63 3.92 0.16 7.86 3.79 6.08
5 2023-02-04 8.94 3.02 4.76 9.79 6.06 6.94 2.70 0.48 0.06 3.48 1.70 2.39 2.44 1.57 0.29 1.93 1.36 1.62 2.96 0.25 0.16 5.70 0.58 3.29 3.20 2.83 0.13 8.49 4.55 6.84
6 2023-02-11 9.97 3.86 5.08 9.89 6.16 6.98 2.67 0.51 0.10 2.89 1.57 2.19 2.14 1.44 0.54 1.74 1.25 1.51 3.73 0.42 0.19 5.57 0.65 3.39 2.64 3.01 0.20 8.57 3.48 6.75
7 2023-02-18 9.87 4.46 5.56 8.95 6.00 7.02 2.63 0.44 0.00 3.20 1.42 2.12 2.31 1.52 0.49 1.61 1.30 1.51 4.41 0.44 0.14 6.05 1.45 3.94 3.14 3.24 0.13 8.02 4.35 6.54
8 2023-02-25 9.55 6.31 4.77 8.35 5.20 6.94 2.55 0.73 0.16 3.21 1.31 2.25 2.86 1.85 0.72 2.00 1.38 1.67 4.29 0.53 0.04 5.74 1.19 4.08 3.06 3.67 0.14 8.29 4.21 6.60
9 2023-03-04 9.78 7.80 5.48 9.04 5.73 7.75 3.06 0.60 0.07 3.35 1.41 2.44 2.75 1.90 0.86 1.92 1.09 1.40 4.73 0.40 0.11 6.42 1.87 4.38 3.41 3.32 0.36 8.01 5.09 6.86
10 2023-03-11 9.42 8.24 4.62 10.16 5.55 8.08 2.77 0.68 0.06 4.18 1.19 2.69 2.79 1.98 0.38 2.23 1.50 1.78 5.04 0.51 0.00 6.74 2.26 4.80 3.70 3.86 0.34 8.34 4.28 7.01
11 2023-03-18 8.77 8.97 4.08 9.45 7.15 8.24 3.48 0.66 0.19 4.58 1.35 3.00 2.39 1.88 0.63 2.32 1.23 1.69 5.07 0.59 0.11 7.94 2.52 4.71 3.70 3.25 0.33 8.02 4.35 6.23
12 2023-03-25 9.31 9.52 4.61 10.26 8.71 9.66 2.98 1.05 0.00 4.95 1.26 3.34 2.56 1.71 0.35 2.13 1.84 1.97 5.45 0.77 0.14 6.69 3.65 5.19 4.53 4.38 0.54 6.99 3.95 5.69
13 2023-04-01 8.35 8.49 4.86 12.58 7.69 10.26 3.17 1.39 0.18 5.21 1.48 3.68 2.51 2.30 0.35 2.12 1.37 1.70 4.79 1.28 0.07 6.90 3.95 5.18 4.04 4.45 0.30 8.16 3.65 5.46
14 2023-04-08 8.95 9.25 5.49 13.59 8.60 12.03 3.45 1.18 0.00 6.26 1.67 4.31 2.56 1.74 0.34 2.31 1.50 1.86 4.61 1.45 0.04 7.70 4.14 6.00 4.51 4.24 0.41 7.79 3.84 4.87
15 2023-04-15 9.17 9.14 8.23 14.59 9.44 13.16 3.83 1.35 0.12 6.94 1.97 4.61 3.04 1.71 0.98 2.62 1.64 2.12 4.09 1.52 0.04 7.47 3.81 5.94 3.56 4.97 1.07 5.52 3.23 4.24
16 2023-04-22 8.59 8.20 6.18 16.10 10.84 13.78 3.87 2.19 0.16 7.88 1.97 5.20 2.83 1.84 0.82 3.21 1.85 2.32 3.86 2.18 0.04 7.16 3.71 5.90 3.71 4.91 0.69 4.99 3.51 4.32
17 2023-04-29 9.87 7.74 7.23 18.29 13.64 16.16 3.95 1.78 0.61 8.67 2.07 6.01 2.61 1.37 0.35 2.54 1.70 2.10 3.45 2.40 0.04 6.58 4.68 5.64 4.38 4.91 0.96 4.11 2.54 3.37

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 2022-09-03 95312 13.40 10317 23.39 26519 12.26 28978 12.71 14414 16.11 14523 7.27 561 9.27
36 2022-09-10 88007 13.07 9220 22.81 25637 12.40 25742 12.04 13370 15.42 13642 7.44 396 10.86
37 2022-09-17 94363 12.73 9788 18.93 26091 12.17 28069 12.72 14241 16.20 15727 6.70 447 13.20
38 2022-09-24 96287 13.61 9345 24.14 26931 13.36 28977 12.35 15042 16.85 15532 6.99 460 10.43
39 2022-10-01 92675 14.45 8311 23.17 29662 13.22 27909 13.57 14884 17.55 11511 9.65 398 7.79
40 2022-10-08 95462 15.06 11290 20.91 31745 13.44 30640 14.46 14766 16.55 6525 13.01 496 6.05
41 2022-10-15 93092 16.58 9618 27.02 32473 13.37 28633 17.02 15441 17.70 6458 13.35 469 5.76
42 2022-10-22 95270 15.39 11962 20.72 32792 12.10 26742 17.29 16894 16.80 6521 11.13 359 7.24
43 2022-10-29 94756 15.78 9563 21.97 33446 11.75 25142 19.65 20195 16.34 5991 10.82 419 8.11
44 2022-11-05 89782 13.91 8906 17.97 32692 11.30 23508 16.57 17710 15.27 6497 8.56 469 8.74
45 2022-11-12 89643 12.43 10513 14.36 31704 10.58 22024 13.83 18372 13.92 6651 9.76 379 6.86
46 2022-11-19 90476 11.97 10650 13.65 30751 11.13 21425 12.63 20655 12.41 6640 9.79 355 7.61
47 2022-11-26 93875 11.76 11661 13.65 33538 11.43 20744 11.77 20339 11.72 7236 10.50 357 8.68
48 2022-12-03 94410 12.12 12354 13.22 35547 12.95 20852 11.38 18486 11.58 6818 9.78 353 7.65
49 2022-12-10 93753 12.63 13445 13.82 34889 13.37 21193 12.30 16624 10.88 7198 12.25 404 4.46
50 2022-12-17 89983 13.10 11781 13.87 34271 14.24 20346 13.88 16279 10.13 6965 10.73 341 14.08
51 2022-12-24 78912 14.15 10225 15.87 30937 14.58 18610 15.78 13249 10.30 5579 12.56 312 9.94
52 2022-12-31 69932 15.61 8458 19.43 25554 15.29 18079 17.14 11699 11.99 5877 14.45 265 6.79
1 2023-01-07 75195 15.09 9934 18.10 24748 13.67 20785 17.96 13420 11.46 5974 14.16 334 13.77
2 2023-01-14 71607 13.41 9630 17.07 22640 12.05 19450 15.40 13853 10.63 5694 12.93 340 8.53
3 2023-01-21 65814 12.26 8435 17.29 21828 10.70 18101 14.33 12528 9.01 4637 11.47 285 8.42
4 2023-01-28 59464 11.35 6656 17.86 19478 9.48 17201 13.27 11564 8.86 4313 9.07 252 6.35
5 2023-02-04 56552 11.56 5958 18.95 18579 10.53 16669 12.57 10944 8.89 4144 8.93 258 5.81
6 2023-02-11 55878 11.92 6104 18.18 19683 11.59 16025 12.38 9663 8.42 4144 10.71 259 9.65
7 2023-02-18 54615 11.78 5613 17.66 19596 11.17 15744 12.81 9276 8.13 4179 10.91 207 14.49
8 2023-02-25 52129 11.78 4878 18.63 19200 11.20 14836 12.15 8749 8.55 4259 11.86 207 13.53
9 2023-03-04 53286 11.19 5550 16.85 19339 10.82 15219 11.39 8874 8.70 4055 10.09 249 9.64
10 2023-03-11 51026 11.45 4959 18.33 18106 10.52 14995 11.34 8622 9.75 4122 11.28 222 10.81
11 2023-03-18 50494 11.59 4754 17.37 17768 10.25 15075 11.90 8863 10.05 3828 13.01 206 9.71
12 2023-03-25 48713 11.28 4607 16.21 16710 10.15 14209 10.89 9067 10.01 3939 14.78 181 7.73
13 2023-04-01 46587 10.83 4341 16.47 17132 9.38 13065 9.94 8196 10.14 3676 15.86 177 6.78
14 2023-04-08 40775 10.90 3595 15.35 15657 10.40 10310 9.28 7610 9.96 3408 15.76 195 5.64
15 2023-04-15 41856 11.34 3771 15.43 16454 10.51 10477 9.48 7246 10.41 3736 18.31 172 2.33
16 2023-04-22 40181 10.89 3412 13.25 16118 9.68 9788 9.28 7038 11.17 3614 18.29 211 4.74
17 2023-04-29 37889 10.04 2700 13.52 15225 9.23 9082 7.85 7081 9.33 3629 18.08 172 2.91

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 2022-09-03 12769 0.18 0.02 932 0.11 0.11 2404 0.17 0.04 4663 0.11 0.00 2649 0.34 0.04 2006 0.20 0.00 115 0.00 0.00
36 2022-09-10 12637 0.14 0.04 906 0.00 0.00 2520 0.12 0.00 4411 0.16 0.02 2659 0.15 0.08 2055 0.19 0.10 86 0.00 0.00
37 2022-09-17 13539 0.24 0.01 854 0.12 0.00 2618 0.19 0.04 4801 0.31 0.02 2897 0.17 0.00 2247 0.22 0.00 122 0.82 0.00
38 2022-09-24 14521 0.48 0.02 788 0.13 0.00 2714 0.22 0.04 5515 0.38 0.00 3144 0.41 0.03 2226 1.21 0.04 134 1.49 0.00
39 2022-10-01 14943 0.68 0.03 688 0.29 0.15 2873 0.21 0.10 5624 0.66 0.02 3234 0.62 0.00 2411 1.33 0.00 113 3.54 0.00
40 2022-10-08 14585 0.99 0.03 818 0.24 0.00 2339 0.21 0.00 5676 1.02 0.05 3181 0.88 0.03 2430 1.85 0.00 141 4.26 0.00
41 2022-10-15 16307 1.44 0.01 776 1.68 0.00 3275 0.49 0.00 5761 1.89 0.00 3829 0.97 0.03 2540 1.85 0.00 126 10.32 0.00
42 2022-10-22 17826 2.39 0.05 1001 2.60 0.00 3608 0.86 0.03 6230 3.10 0.08 4101 2.12 0.02 2774 2.45 0.07 112 18.75 0.00
43 2022-10-29 18556 5.54 0.03 969 3.72 0.00 3821 1.41 0.08 6013 8.13 0.02 4567 6.90 0.00 3026 3.34 0.07 160 20.63 0.00
44 2022-11-05 21669 10.91 0.03 1209 8.02 0.00 4458 3.45 0.02 7006 11.28 0.04 5715 17.76 0.02 3111 8.07 0.06 170 33.53 0.00
45 2022-11-12 27004 16.20 0.04 2145 11.38 0.05 5731 7.47 0.07 8254 13.28 0.04 7204 27.94 0.03 3507 16.03 0.03 163 19.63 0.00
46 2022-11-19 33291 20.15 0.05 3433 14.54 0.00 6914 13.65 0.04 8727 14.32 0.07 9301 30.99 0.05 4741 23.52 0.04 175 10.86 0.00
47 2022-11-26 40370 24.06 0.04 5140 24.20 0.00 9252 22.84 0.06 9193 16.41 0.03 10338 30.32 0.01 6279 26.74 0.10 168 19.64 0.00
48 2022-12-03 44029 23.83 0.03 6393 27.94 0.02 12431 26.91 0.06 9930 16.05 0.02 9751 24.78 0.03 5334 24.07 0.00 190 34.74 0.00
49 2022-12-10 45446 20.95 0.06 7404 28.55 0.00 12616 25.12 0.13 10560 13.10 0.06 8800 18.65 0.02 5819 19.02 0.07 247 42.51 0.00
50 2022-12-17 44356 17.20 0.07 6554 23.25 0.00 13081 21.57 0.15 10525 10.56 0.02 8264 14.41 0.01 5731 16.18 0.10 201 27.36 0.00
51 2022-12-24 40210 12.50 0.05 5487 16.93 0.00 11742 17.27 0.09 9666 6.57 0.03 8008 9.67 0.01 5122 12.16 0.10 185 19.46 0.00
52 2022-12-31 38348 7.97 0.07 4924 9.36 0.00 10677 12.04 0.14 9370 4.30 0.09 7758 6.38 0.04 5477 7.23 0.04 142 11.97 0.00
1 2023-01-07 39868 4.59 0.07 5460 4.93 0.00 10659 6.90 0.14 10122 3.03 0.08 8311 3.22 0.00 5152 4.54 0.12 164 9.15 0.00
2 2023-01-14 35461 2.24 0.05 4291 2.47 0.02 8879 3.47 0.08 9531 1.29 0.08 7952 1.84 0.01 4646 2.17 0.02 162 5.56 0.00
3 2023-01-21 31232 1.39 0.14 3858 1.17 0.03 8035 2.50 0.25 8462 0.79 0.05 6806 1.16 0.25 3936 1.07 0.05 135 0.00 0.00
4 2023-01-28 28799 0.91 0.15 3184 0.44 0.03 7597 1.29 0.17 8022 0.57 0.15 6332 1.01 0.21 3571 1.09 0.08 93 0.00 0.00
5 2023-02-04 28377 0.75 0.28 3221 0.25 0.00 7614 1.06 0.56 7653 0.55 0.25 6261 1.12 0.24 3527 0.37 0.09 101 0.00 0.00
6 2023-02-11 27982 0.68 0.34 3116 0.10 0.03 7619 1.00 0.45 7451 0.44 0.31 6138 1.06 0.39 3538 0.40 0.34 120 0.00 0.00
7 2023-02-18 26289 0.55 0.29 3068 0.10 0.00 6834 0.91 0.45 7239 0.23 0.18 5621 0.87 0.30 3444 0.41 0.41 83 0.00 0.00
8 2023-02-25 25448 0.57 0.50 2864 0.07 0.03 6409 1.09 0.94 7307 0.23 0.33 5235 0.67 0.44 3545 0.62 0.28 88 0.00 10.23
9 2023-03-04 26132 0.63 0.70 2917 0.31 0.07 6757 1.11 1.42 7347 0.37 0.48 5622 0.48 0.46 3373 0.77 0.53 116 0.00 4.31
10 2023-03-11 25805 0.62 0.78 2949 0.31 0.03 6864 1.18 1.35 7129 0.28 0.70 5349 0.41 0.60 3413 0.82 0.64 101 0.00 2.97
11 2023-03-18 25615 0.53 1.14 2824 0.35 0.14 6927 0.90 1.82 6958 0.36 0.86 5383 0.37 1.26 3416 0.53 0.94 107 0.00 2.80
12 2023-03-25 24111 0.60 1.29 2665 0.41 0.19 5617 1.46 2.39 7066 0.24 1.16 5198 0.33 1.00 3444 0.49 0.87 121 0.00 6.61
13 2023-04-01 24350 0.64 1.74 2435 0.45 0.21 6887 1.47 3.44 6826 0.38 1.35 4957 0.22 1.11 3126 0.22 0.61 119 0.00 12.61
14 2023-04-08 22975 0.38 1.85 2099 0.10 0.19 6354 0.76 3.12 6082 0.23 1.66 5195 0.21 1.48 3114 0.39 0.74 131 0.00 16.79
15 2023-04-15 23227 0.60 1.92 2175 0.18 0.23 6915 1.27 3.31 6142 0.33 1.73 4722 0.38 1.31 3156 0.32 0.44 117 0.00 24.79
16 2023-04-22 21077 0.53 1.80 1928 1.09 0.10 6413 0.81 3.03 5961 0.29 1.41 3426 0.41 1.02 3170 0.22 0.73 179 0.00 22.91
17 2023-04-29 19982 0.43 1.81 1771 0.28 0.17 6006 0.72 2.85 5561 0.13 1.67 4291 0.61 1.77 2233 0.18 0.31 120 0.83 10.00

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 2022-09-03 11585 1.14 832 1.44 1737 3.51 4663 0.54 2443 0.65 1795 0.50 115 7.83
36 2022-09-10 11442 1.12 785 0.64 1737 2.71 4411 1.00 2508 0.52 1915 0.73 86 5.81
37 2022-09-17 12331 1.05 721 0.97 1851 3.51 4801 0.60 2709 0.66 2127 0.38 122 2.46
38 2022-09-24 13335 1.40 707 1.13 1908 5.56 5515 0.98 2921 0.34 2150 0.33 134 1.49
39 2022-10-01 13629 2.11 556 3.06 2029 7.69 5623 1.35 2996 0.73 2312 0.65 113 0.88
40 2022-10-08 13346 2.44 677 2.95 1727 8.92 5675 1.92 2807 0.64 2319 0.95 141 2.13
41 2022-10-15 14337 3.52 695 3.45 2330 11.12 5761 2.46 3141 1.34 2284 1.53 126 1.59
42 2022-10-22 15783 4.56 799 3.38 2644 13.09 6230 3.60 3447 2.15 2551 1.72 112 3.57
43 2022-10-29 16274 6.59 929 4.20 2751 17.52 6010 6.09 3745 2.62 2680 3.10 159 3.14
44 2022-11-05 18915 7.63 964 6.64 3126 20.15 7006 7.09 4658 3.24 2993 3.31 168 1.79
45 2022-11-12 23546 7.54 1867 9.16 3986 16.88 8242 7.01 5898 3.49 3390 4.25 163 1.84
46 2022-11-19 27482 7.51 2538 6.82 4620 14.11 8721 7.41 7387 4.67 4041 5.99 175 2.86
47 2022-11-26 34682 6.65 4680 6.24 6170 9.98 9192 6.80 8329 5.01 6143 5.73 168 2.98
48 2022-12-03 37476 6.93 6110 5.35 8002 7.91 9926 6.85 8157 6.61 5091 8.15 190 1.58
49 2022-12-10 38234 7.36 6227 5.77 8206 6.37 10558 7.62 7504 8.49 5492 8.78 247 2.83
50 2022-12-17 37745 8.71 5921 6.67 8545 5.36 10522 8.33 7140 13.04 5416 11.48 201 2.49
51 2022-12-24 34329 9.26 4905 6.81 7661 5.33 9664 8.14 7114 13.66 4800 13.96 185 4.86
52 2022-12-31 32948 10.69 4669 7.90 6616 6.48 9370 8.19 7032 16.74 5119 15.06 142 7.04
1 2023-01-07 33446 10.40 5144 8.98 6335 6.46 10120 7.99 7536 15.96 4147 14.23 164 3.05
2 2023-01-14 30533 9.12 4078 7.41 5279 4.83 9531 7.09 7108 13.89 4375 12.75 162 4.32
3 2023-01-21 26624 8.47 3667 8.67 4553 6.50 8462 5.13 6065 12.38 3742 11.76 135 11.11
4 2023-01-28 24389 7.97 3037 7.74 4237 5.81 8022 4.62 5580 11.31 3420 13.25 93 8.60
5 2023-02-04 24100 7.18 2906 7.91 4304 5.72 7653 3.78 5758 10.04 3378 11.13 101 11.88
6 2023-02-11 24263 5.79 2953 7.42 4604 3.84 7451 3.21 5772 7.17 3363 10.20 120 10.83
7 2023-02-18 23026 5.13 2897 6.83 4209 3.64 7239 3.18 5299 6.30 3298 7.82 84 9.52
8 2023-02-25 22394 4.54 2721 6.43 4066 3.91 7307 2.29 4871 5.69 3341 6.76 88 14.77
9 2023-03-04 22960 3.73 2800 4.39 4224 3.10 7347 2.10 5269 4.29 3204 6.68 116 6.90
10 2023-03-11 22558 2.82 2843 3.13 4150 2.67 7130 1.40 5060 2.92 3274 5.19 101 18.81
11 2023-03-18 22373 2.18 2727 2.57 4216 2.21 6958 1.29 5083 1.89 3282 3.69 107 16.82
12 2023-03-25 21508 1.97 2598 2.27 3523 2.36 7065 1.13 4917 1.46 3284 3.53 121 11.57
13 2023-04-01 21201 1.64 2369 2.41 4251 1.88 6826 0.88 4691 1.26 2945 2.85 119 6.72
14 2023-04-08 20023 1.34 2088 1.92 3817 1.91 6082 0.64 4952 0.93 2953 1.79 131 12.98
15 2023-04-15 19963 1.42 2164 2.22 4172 1.77 6142 0.94 4458 0.87 2910 1.92 117 7.69
16 2023-04-22 18274 1.38 1942 2.57 3919 1.76 5961 0.57 3219 0.93 3054 1.83 179 7.82
17 2023-04-29 17339 1.18 1755 2.05 3773 1.99 5561 0.49 4063 0.64 2067 1.64 120 5.00

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 2022-09-03 3433 2.80 294 0.34 619 2.75 1151 3.21 967 2.69 402 3.73
36 2022-09-10 3454 3.21 280 5.36 646 3.87 1081 2.96 1025 2.44 422 3.32
37 2022-09-17 3973 3.02 301 5.65 661 3.33 1368 3.36 1112 2.07 530 2.26
38 2022-09-24 4589 2.40 334 1.80 717 2.65 1717 2.56 1274 1.73 547 3.47
39 2022-10-01 4878 3.10 286 1.75 728 4.81 1999 3.60 1327 1.81 538 2.79
40 2022-10-08 5057 3.70 298 2.35 578 6.40 2228 2.92 1386 3.68 567 4.76
41 2022-10-15 5998 3.52 265 5.28 851 4.70 2960 3.04 1323 3.40 599 3.67
42 2022-10-22 7244 4.21 354 3.39 904 4.09 3859 3.55 1420 4.72 707 7.36
43 2022-10-29 8429 4.41 441 3.40 944 4.45 4632 3.52 1572 4.20 839 10.25
44 2022-11-05 9258 4.14 362 7.73 974 2.98 5243 2.96 1857 4.79 822 9.98
45 2022-11-12 10628 3.90 458 5.02 1103 2.81 5832 3.24 2451 4.28 783 8.43
46 2022-11-19 11671 3.97 575 5.91 1243 3.06 5943 3.30 2973 3.87 937 8.54
47 2022-11-26 12299 3.63 677 5.91 1319 3.64 5937 3.17 2644 2.91 1722 5.46
48 2022-12-03 12364 3.04 808 3.71 1439 1.88 6344 2.70 2817 3.48 956 5.23
49 2022-12-10 12670 3.03 962 3.64 1438 2.09 6470 2.43 2710 3.51 1090 6.15
50 2022-12-17 12356 2.98 988 2.94 1350 1.93 6718 2.44 2231 4.03 1069 5.52
51 2022-12-24 11701 3.09 783 3.19 1147 2.01 6638 2.65 2147 3.91 986 5.38
52 2022-12-31 11030 3.32 638 2.82 1016 2.17 6308 2.92 2063 4.36 1005 5.17
1 2023-01-07 11997 3.63 802 3.12 1017 3.24 6863 2.93 2351 4.08 964 8.30
2 2023-01-14 11015 3.24 526 3.80 828 2.17 6446 2.82 2351 3.19 864 7.18
3 2023-01-21 9972 2.92 498 4.02 849 3.06 5818 2.20 1971 4.21 836 4.07
4 2023-01-28 9363 2.78 413 2.91 813 2.58 5596 2.52 1761 2.73 780 4.87
5 2023-02-04 9383 2.70 596 3.19 788 3.05 5337 1.93 1870 3.58 792 5.05
6 2023-02-11 9047 2.67 420 5.95 816 3.19 5274 1.80 1767 3.00 770 5.58
7 2023-02-18 8811 2.63 449 4.45 860 3.72 5232 1.43 1542 4.54 728 4.81
8 2023-02-25 8628 2.55 421 5.70 795 2.77 5230 1.55 1481 3.65 701 5.56
9 2023-03-04 9016 3.06 421 9.03 788 4.44 5409 1.37 1637 5.44 761 5.26
10 2023-03-11 8553 2.77 472 9.53 766 3.13 5019 1.45 1542 3.18 754 6.10
11 2023-03-18 8475 3.48 428 10.51 764 4.32 4992 1.74 1523 5.12 768 6.77
12 2023-03-25 8626 2.98 456 9.87 641 2.65 5162 1.53 1633 4.72 734 5.31
13 2023-04-01 8443 3.17 467 7.92 789 3.80 5061 1.90 1484 4.11 642 6.85
14 2023-04-08 7692 3.45 399 9.27 731 3.28 4346 1.84 1517 5.01 699 6.87
15 2023-04-15 8020 3.83 482 9.13 825 4.00 4592 2.16 1443 6.10 678 6.34
16 2023-04-22 7477 3.87 450 7.11 818 3.91 4317 2.32 1338 6.13 554 7.76
17 2023-04-29 7110 3.95 443 8.13 798 3.76 4026 2.91 1246 4.90 597 6.20

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 2022-09-03 3472 2.28 294 6.12 632 2.53 1179 0.76 965 2.69 402 2.49
36 2022-09-10 3478 2.19 280 3.57 659 3.03 1089 1.10 1028 2.43 422 2.13
37 2022-09-17 3991 2.10 301 4.65 679 3.09 1369 1.46 1111 1.35 530 2.64
38 2022-09-24 4604 1.59 334 1.20 731 3.42 1717 1.05 1275 1.41 547 1.46
39 2022-10-01 4894 2.21 286 2.80 742 4.18 2001 1.35 1327 2.11 538 2.60
40 2022-10-08 5068 1.80 298 4.03 583 5.66 2234 1.16 1386 1.23 567 0.53
41 2022-10-15 6013 2.03 265 3.77 864 4.63 2962 0.95 1323 2.12 599 2.67
42 2022-10-22 7255 1.67 354 1.98 915 4.04 3859 0.88 1420 1.69 707 2.69
43 2022-10-29 8441 1.79 441 2.04 955 5.76 4633 1.01 1572 1.97 839 1.07
44 2022-11-05 9271 2.02 362 6.08 987 5.27 5243 1.16 1857 1.99 822 1.82
45 2022-11-12 10610 1.99 458 5.46 1117 6.62 5800 1.03 2451 1.59 783 1.66
46 2022-11-19 11695 1.87 575 4.35 1265 4.66 5946 1.19 2972 1.38 937 2.45
47 2022-11-26 12290 1.89 677 3.99 1333 5.85 5937 0.94 2633 1.52 1710 1.81
48 2022-12-03 12381 1.87 808 4.33 1455 5.09 6344 1.04 2818 1.38 956 1.88
49 2022-12-10 12679 1.68 962 2.81 1450 4.69 6470 1.07 2707 1.00 1090 2.02
50 2022-12-17 12368 2.29 987 4.05 1364 6.16 6718 1.31 2230 1.70 1069 3.09
51 2022-12-24 11718 1.76 783 2.30 1161 5.51 6638 1.11 2150 1.12 986 2.64
52 2022-12-31 11030 1.80 638 2.04 1020 6.57 6308 1.08 2059 1.51 1005 1.99
1 2023-01-07 12009 1.88 802 3.74 1027 6.52 6865 1.12 2351 1.45 964 1.87
2 2023-01-14 11023 1.87 526 3.42 838 6.21 6446 1.12 2349 1.66 864 2.89
3 2023-01-21 9991 1.97 502 4.18 865 5.32 5818 1.31 1970 1.17 836 3.71
4 2023-01-28 9374 2.35 413 2.18 823 8.51 5596 1.39 1762 2.27 780 2.95
5 2023-02-04 9398 2.44 596 4.87 804 9.20 5337 1.14 1869 1.93 792 3.66
6 2023-02-11 9060 2.14 420 2.38 830 9.16 5274 1.14 1766 1.64 770 2.47
7 2023-02-18 8824 2.31 449 2.45 872 6.88 5233 1.55 1542 1.56 728 3.85
8 2023-02-25 8647 2.86 424 3.77 812 9.48 5230 1.91 1480 1.62 701 4.28
9 2023-03-04 9027 2.75 421 3.09 799 8.64 5409 1.85 1637 2.32 761 3.68
10 2023-03-11 8573 2.79 472 2.75 786 9.29 5019 1.61 1542 2.40 754 4.64
11 2023-03-18 8486 2.39 428 3.04 776 7.09 4992 1.62 1522 1.71 768 3.65
12 2023-03-25 8640 2.56 456 2.41 655 7.94 5162 1.72 1633 2.33 734 4.22
13 2023-04-01 8460 2.51 467 2.78 806 7.32 5061 1.70 1484 1.48 642 4.98
14 2023-04-08 7702 2.56 399 2.26 742 8.09 4346 1.56 1516 2.18 699 3.86
15 2023-04-15 8036 3.04 482 2.28 841 7.13 4592 2.05 1443 2.84 678 5.60
16 2023-04-22 7516 2.83 450 2.00 834 6.71 4318 2.22 1338 2.02 576 4.34
17 2023-04-29 7116 2.61 443 3.16 806 6.95 4026 1.69 1244 1.45 597 5.03

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 2022-09-03 3492 1.80 294 2.38 619 2.91 1179 0.93 998 1.90 402 1.99
36 2022-09-10 3489 1.81 280 1.79 649 3.39 1089 0.92 1049 1.72 422 1.90
37 2022-09-17 3992 1.38 301 2.66 665 3.31 1368 0.51 1127 0.80 530 1.70
38 2022-09-24 4603 1.61 334 0.90 723 4.98 1714 0.53 1285 1.48 547 1.28
39 2022-10-01 4895 1.43 286 1.75 729 4.53 2001 0.45 1341 1.04 538 1.67
40 2022-10-08 5096 1.43 298 1.01 581 5.34 2236 0.45 1414 1.27 567 1.94
41 2022-10-15 6027 1.66 265 1.89 857 6.07 2962 0.41 1344 1.26 599 2.34
42 2022-10-22 7277 1.59 354 0.85 911 6.70 3865 0.52 1440 1.67 707 1.13
43 2022-10-29 8450 1.78 441 1.81 960 6.35 4632 0.97 1577 1.78 839 0.95
44 2022-11-05 9271 1.79 362 2.76 977 7.57 5245 0.57 1865 1.98 822 1.82
45 2022-11-12 10656 2.06 458 3.06 1123 7.84 5838 0.57 2453 2.77 783 2.04
46 2022-11-19 11676 1.89 575 3.65 1247 6.58 5955 0.27 2962 2.87 937 1.81
47 2022-11-26 12281 1.78 677 2.22 1325 6.11 5951 0.55 2618 2.02 1710 2.16
48 2022-12-03 12376 1.86 808 3.22 1440 4.17 6360 0.64 2812 2.88 956 2.30
49 2022-12-10 12530 1.93 962 3.95 1439 3.61 6474 0.85 2565 2.96 1090 1.93
50 2022-12-17 12385 1.92 987 2.84 1350 3.48 6726 0.86 2253 3.86 1069 1.68
51 2022-12-24 11712 2.23 773 3.36 1152 4.08 6652 1.05 2149 4.75 986 1.62
52 2022-12-31 11053 2.75 638 4.08 1020 3.33 6330 1.50 2060 5.92 1005 2.69
1 2023-01-07 12016 2.94 802 3.49 1018 3.24 6871 1.67 2361 5.89 964 3.94
2 2023-01-14 11046 2.61 526 3.04 831 2.77 6464 1.79 2361 4.62 864 2.78
3 2023-01-21 10031 2.56 502 2.99 854 3.16 5849 1.54 1990 4.82 836 3.47
4 2023-01-28 9404 2.71 413 2.18 813 3.32 5631 1.69 1767 5.09 780 4.36
5 2023-02-04 9432 2.96 596 4.03 792 2.15 5367 2.11 1885 4.88 792 4.17
6 2023-02-11 9062 3.73 420 5.48 817 3.67 5291 2.51 1764 5.27 770 7.66
7 2023-02-18 8821 4.41 449 9.58 861 3.25 5234 3.31 1549 5.62 728 7.97
8 2023-02-25 8642 4.29 424 5.90 797 2.13 5232 4.05 1488 4.44 701 7.28
9 2023-03-04 9015 4.73 421 5.94 791 2.53 5408 4.60 1634 4.83 761 6.96
10 2023-03-11 8563 5.04 472 5.93 768 3.13 5023 5.02 1546 3.69 754 9.42
11 2023-03-18 8504 5.07 428 7.24 770 3.64 4995 4.70 1543 4.41 768 8.98
12 2023-03-25 8649 5.45 456 5.04 643 3.58 5167 5.98 1649 4.00 734 6.81
13 2023-04-01 8462 4.79 467 3.00 794 3.53 5062 5.18 1497 3.34 642 7.94
14 2023-04-08 7722 4.61 399 3.01 732 3.96 4352 5.08 1540 2.60 699 7.73
15 2023-04-15 8035 4.09 482 3.32 828 2.90 4591 4.36 1456 2.68 678 7.37
16 2023-04-22 7533 3.86 450 4.89 822 1.82 4321 4.49 1364 2.20 576 5.21
17 2023-04-29 7137 3.45 443 3.84 800 2.38 4030 3.70 1267 2.13 597 5.70

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 2022-09-03 2845 15.47 294 30.27 - - 1179 10.18 947 16.79 394 15.48
36 2022-09-10 2817 16.22 280 21.79 - - 1089 11.20 1013 18.76 417 17.99
37 2022-09-17 3337 21.73 301 23.59 - - 1368 20.10 1101 20.62 522 24.33
38 2022-09-24 3847 23.50 334 22.16 - - 1689 22.20 1255 21.59 538 31.78
39 2022-10-01 4150 22.89 286 27.62 - - 2001 19.94 1310 22.29 521 31.67
40 2022-10-08 4488 19.32 298 20.47 - - 2235 15.84 1365 19.85 546 29.67
41 2022-10-15 5161 16.70 265 24.91 - - 2963 11.51 1305 20.15 579 28.67
42 2022-10-22 6332 12.95 354 21.47 - - 3863 7.77 1389 18.14 678 26.40
43 2022-10-29 7496 11.05 441 19.05 - - 4632 7.38 1555 13.95 814 20.64
44 2022-11-05 8272 10.23 362 23.20 - - 5245 6.43 1827 12.10 796 24.37
45 2022-11-12 9526 7.77 458 19.87 - - 5837 4.99 2415 7.99 759 19.89
46 2022-11-19 10427 6.93 575 18.43 - - 5952 4.96 2945 6.25 904 14.49
47 2022-11-26 10986 4.88 677 9.75 - - 5927 3.36 2619 4.39 1678 8.70
48 2022-12-03 10959 4.74 808 9.78 - - 6360 3.21 2787 4.81 931 10.20
49 2022-12-10 11309 4.09 962 7.59 - - 6474 2.90 2693 3.64 1064 8.93
50 2022-12-17 11052 4.58 987 8.81 - - 6726 3.20 2213 4.84 1038 8.67
51 2022-12-24 10580 4.49 783 5.75 - - 6652 3.77 2125 4.89 956 7.53
52 2022-12-31 10049 4.50 638 6.11 - - 6330 3.95 2047 5.23 972 5.25
1 2023-01-07 10998 4.19 802 3.12 - - 6872 4.13 2336 4.32 937 5.02
2 2023-01-14 10199 4.71 526 6.65 - - 6464 4.05 2327 4.86 832 7.81
3 2023-01-21 9133 6.68 502 7.57 - - 5849 5.85 1945 5.86 807 13.88
4 2023-01-28 8568 8.22 413 11.14 - - 5631 6.68 1747 8.70 754 16.84
5 2023-02-04 8581 8.94 596 11.07 - - 5367 7.60 1827 8.65 764 17.15
6 2023-02-11 8243 9.97 420 12.62 - - 5291 8.20 1748 10.30 740 20.00
7 2023-02-18 7927 9.87 449 11.58 - - 5234 8.31 1517 10.61 707 18.39
8 2023-02-25 7812 9.55 424 12.03 - - 5232 8.12 1463 10.25 671 17.44
9 2023-03-04 8214 9.78 421 9.26 - - 5408 8.69 1617 10.33 736 16.03
10 2023-03-11 7758 9.42 472 9.32 - - 5023 7.78 1521 12.29 714 14.85
11 2023-03-18 7676 8.77 428 8.41 - - 4995 7.21 1489 10.61 740 15.27
12 2023-03-25 7973 9.31 456 12.06 - - 5167 7.14 1619 12.91 710 14.65
13 2023-04-01 7640 8.35 467 11.78 - - 5062 7.13 1474 9.43 620 12.90
14 2023-04-08 6941 8.95 399 11.03 - - 4352 7.61 1494 10.44 672 12.65
15 2023-04-15 7168 9.17 482 11.00 - - 4591 7.19 1424 11.73 658 16.11
16 2023-04-22 6670 8.59 450 9.33 - - 4321 6.78 1328 11.82 551 14.16
17 2023-04-29 6293 9.87 443 15.12 - - 4030 7.49 1228 13.19 577 15.08

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 2022-09-03 2818 0.53 294 0.68 610 0.66 523 0.57 997 0.20 394 1.02
36 2022-09-10 2877 0.38 280 0.71 639 0.16 495 0.20 1046 0.67 417 0.00
37 2022-09-17 3264 0.28 301 0.00 654 0.31 658 0.46 1128 0.35 522 0.00
38 2022-09-24 3716 0.32 334 0.00 705 0.57 853 0.23 1286 0.47 538 0.00
39 2022-10-01 4034 0.59 286 0.35 716 0.84 1170 0.34 1341 0.75 521 0.58
40 2022-10-08 4079 0.93 298 1.01 568 0.35 1253 0.56 1414 1.27 546 1.47
41 2022-10-15 4922 1.00 265 0.38 842 1.07 1889 0.53 1347 2.00 579 0.35
42 2022-10-22 6026 1.16 354 0.00 884 1.02 2671 0.79 1439 2.50 678 0.59
43 2022-10-29 7155 1.86 386 0.78 922 0.65 3451 1.45 1581 4.49 814 0.37
44 2022-11-05 7767 2.54 362 0.83 943 2.55 3800 1.97 1866 5.04 796 0.13
45 2022-11-12 9087 3.00 458 0.87 1087 2.48 4325 2.80 2457 4.56 759 1.19
46 2022-11-19 10076 3.54 575 2.61 1193 3.52 4433 2.96 2971 5.02 904 2.21
47 2022-11-26 10690 3.24 677 2.66 1290 3.80 4433 3.50 2612 3.83 1678 1.43
48 2022-12-03 10723 3.94 808 2.72 1381 5.29 4788 4.24 2815 3.13 931 3.97
49 2022-12-10 10887 4.48 962 4.89 1415 5.02 4875 4.21 2571 4.24 1064 5.26
50 2022-12-17 10765 5.13 987 5.78 1350 5.63 5133 4.56 2257 4.70 1038 7.61
51 2022-12-24 10056 5.28 783 6.00 1147 6.63 5024 3.86 2149 5.07 953 11.02
52 2022-12-31 9437 4.73 638 7.21 1016 6.69 4746 3.08 2065 3.83 972 11.01
1 2023-01-07 10141 4.40 802 10.97 1017 5.11 5025 2.95 2360 3.35 937 8.43
2 2023-01-14 9360 4.01 526 9.89 829 3.50 4805 3.64 2368 2.53 832 7.09
3 2023-01-21 8614 3.46 502 6.37 849 4.71 4464 2.91 1992 2.06 807 6.82
4 2023-01-28 7905 2.63 413 4.12 813 5.17 4157 1.88 1768 1.81 754 5.17
5 2023-02-04 7997 3.20 596 4.70 788 5.96 3962 2.42 1887 2.12 764 5.89
6 2023-02-11 7619 2.64 420 5.24 816 6.62 3877 1.81 1766 1.70 740 3.38
7 2023-02-18 7381 3.14 449 4.45 860 5.93 3812 2.62 1553 1.80 707 4.67
8 2023-02-25 7223 3.06 424 4.95 795 5.28 3844 2.78 1489 1.88 671 3.43
9 2023-03-04 7540 3.41 421 5.23 788 7.99 3962 2.73 1633 2.76 736 2.58
10 2023-03-11 7115 3.70 472 5.30 766 8.09 3615 3.10 1548 2.26 714 4.06
11 2023-03-18 7115 3.70 428 4.67 764 6.41 3639 3.54 1544 2.66 740 3.24
12 2023-03-25 7212 4.53 456 2.85 642 9.66 3754 4.45 1650 3.09 710 4.79
13 2023-04-01 7010 4.04 467 4.28 789 6.08 3636 3.91 1498 3.67 620 2.90
14 2023-04-08 6318 4.51 399 3.76 731 6.02 2976 4.50 1540 4.16 672 4.17
15 2023-04-15 6632 3.56 482 3.53 825 5.21 3209 3.02 1458 3.57 658 4.10
16 2023-04-22 6225 3.71 450 4.00 818 3.42 3042 3.81 1364 3.67 551 3.45
17 2023-04-29 5917 4.38 443 7.90 798 2.76 2830 4.24 1269 4.02 577 5.37

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