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Respiratory Virus Report, Week 33 - ending August 19, 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 33 (week ending August 19, 2023) in Canada, participating RVDSS laboratories reported 2,529 detections of SARS-CoV-2 from 21,838 tests (11.6% positive). Among non-SARS-CoV-2 respiratory viruses, where test volumes are lower (range of 4,384 to 12,631 tests), activity of enterovirus/rhinovirus is highest.

  • There has been an observed increase in national SARS-CoV-2 percent positivity over the latest six reporting weeks following a period of decline.
  • While activity of enterovirus/rhinovirus is highest, it remains below expected levels typical of this time of year (580 detections; 12.8% positive).
  • Activity of all other non-SARS-CoV-2 respiratory viruses is low and near expected levels typical of this time of year.
  • 33/35 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 August 19, 2023 (surveillance week 2023-33)
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 306 42 213 0 0 0 0 0 213 4 213 1 0 0 5 0 213 5 213 0 213 60 213 2
Prince Edward Island 109 10 7 0 0 0 0 0 7 0 5 0 0 0 0 0 5 0 5 0 5 0 5 0
Nova Scotia 767 114 364 0 0 11 11 0 364 2 21 1 0 0 0 0 21 1 21 0 21 6 21 0
New Brunswick 534 36 317 0 0 1 1 0 305 0 47 0 1 0 0 0 47 1 47 0 47 8 47 0
Atlantic 1716 202 901 0 0 12 12 0 889 6 286 2 1 0 5 0 286 7 286 0 286 74 286 2
Région Nord-Est 1089 148 906 0 0 1 1 0 150 0 39 0 2 0 1 0 39 3 39 0 N.C. N.C. 39 0
Québec-Chaudière-Appalaches 1650 219 351 0 0 0 0 0 351 4 152 1 0 0 1 0 167 3 152 1 N.C. N.C. 152 1
Centre-du-Québec 1091 136 174 0 0 1 1 0 174 2 42 0 0 1 0 0 42 1 42 0 N.C. N.C. 42 0
Montréal-Laval 2122 301 954 0 0 8 8 1 858 7 539 2 4 0 2 0 539 6 539 4 N.C. N.C. 539 1
Ouest du Québec 932 137 280 0 0 2 2 0 280 1 25 0 0 1 1 0 25 3 25 0 N.C. N.C. 25 0
Montérégie 977 148 556 0 0 1 1 1 554 3 2 0 0 0 0 0 2 0 2 0 N.C. N.C. 2 0
Province of Québec 7861 1089 3221 0 0 13 13 2 2367 17 799 3 6 2 5 0 814 16 799 5 N.C. N.C. 799 2
P.H.O.L. - Ottawa 217 97 141 1 0 0 1 0 141 0 88 0 0 0 0 1 88 0 88 0 88 12 88 1
EORLA 1179 114 262 0 0 1 1 1 262 5 20 0 1 0 0 0 20 0 20 0 20 0 20 0
P.H.O.L. - Kingston 180 36 64 0 0 0 0 0 64 0 50 0 0 0 0 7 50 0 50 0 50 4 50 0
UHN / Mount Sinai Hospital 896 34 508 0 0 1 1 1 508 0 31 0 0 2 0 0 31 2 31 1 31 3 31 3
P.H.O.L. - Toronto 364 102 760 2 3 1 6 0 760 2 699 0 0 0 0 44 699 9 699 1 699 131 699 8
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 722 36 722 1 1 0 2 0 722 5 722 0 0 0 0 9 722 10 729 0 729 41 729 1
P.H.O.L. - Sault Ste. Marie 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 1 0 1 0
P.H.O.L. - Timmins 58 1 6 0 0 0 0 0 6 0 6 0 0 0 0 0 6 0 6 0 6 2 6 0
St. Joseph's - London 501 29 31 0 0 0 0 0 31 0 31 0 0 0 0 0 31 0 31 0 31 3 31 0
P.H.O.L. - London 164 20 136 0 0 0 0 1 136 0 123 0 0 0 0 4 123 0 123 0 123 25 123 0
P.H.O.L. - Orillia 26 1 26 0 0 0 0 0 26 0 24 0 0 0 0 4 24 0 24 0 24 3 24 0
P.H.O.L. - Thunder Bay 41 4 20 0 0 0 0 0 20 0 16 0 0 0 0 0 16 0 16 0 16 8 16 0
P.H.O.L. - Sudbury 15 3 12 0 0 0 0 0 12 0 12 0 0 0 0 0 12 0 12 0 12 5 12 0
P.H.O.L. - Hamilton 192 54 138 2 0 0 2 0 138 0 108 0 0 0 0 9 108 1 108 2 108 17 108 0
P.H.O.L. - Peterborough 51 23 78 0 0 0 0 0 78 2 62 0 0 0 0 4 62 2 62 0 62 13 62 0
St. Joseph's - Hamilton 1109 82 995 0 0 2 2 3 995 5 995 0 0 2 0 0 995 15 995 8 995 59 0 0
Sault Area Hospital 41 1 41 0 0 0 0 0 41 0 41 0 0 0 0 0 41 1 41 0 41 4 48 1
Province of Ontario 5757 637 3941 6 4 5 15 6 3941 19 3029 0 1 4 0 82 3029 40 3036 12 3036 330 2048 14
Manitoba 886 94 772 0 1 0 1 0 772 4 56 0 0 1 1 0 56 4 75 0 56 20 75 0
Saskatchewan 931 54 397 0 0 3 3 1 391 1 245 1 3 0 2 0 245 13 245 0 245 39 245 10
Alberta 2674 212 1955 2 0 0 2 1 1864 1 618 3 4 1 0 0 618 15 618 0 612 82 618 4
Prairies 4491 360 3124 2 1 3 6 2 3027 6 919 4 7 2 3 0 919 32 938 0 913 141 938 14
British Columbia 1933 235 1394 12 1 3 26 1 1394 1 340 6 4 4 10 0 340 18 340 2 313 35 313 2
Yukon 47 5 19 0 0 0 0 0 19 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 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. 0 0 N.C. N.C.
Nunavut 33 1 31 0 0 0 0 0 31 3 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 80 6 50 0 0 0 0 0 50 3 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 0 0 N.C. N.C.
CANADA 21838 2529 12631 20 6 36 72 11 11668 52 5373 15 19 12 23 82 5388 113 5399 19 4548 580 4384 34

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 August 19, 2023 (surveillance weeks 2022-35 to 2023-33)
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 25610 4316 15105 8 246 680 934 11 15105 648 15105 75 33 388 170 0 15105 323 15105 386 15105 1403 15105 573
Prince Edward Island 33914 7358 4127 1 119 248 368 4 4127 384 1203 21 27 81 8 0 1203 82 1203 39 1203 350 1203 35
Nova Scotia 141381 26882 48693 0 4 3661 3665 15 48684 2434 1654 15 17 36 8 0 1661 69 1651 45 1661 327 1661 65
New Brunswick 113519 16254 53947 25 133 4439 4597 31 45858 2066 4366 41 35 166 8 0 4366 300 4366 188 4366 808 4311 236
Atlantic 314424 54810 121872 34 502 9028 9564 61 113774 5532 22328 152 112 671 194 0 22335 774 22325 658 22335 2888 22280 909
Région Nord-Est 106326 12268 65572 2 4 3896 3902 112 18646 1410 2215 33 13 96 17 0 2216 184 2193 100 N.C. N.C. 2216 113
Québec-Chaudière-Appalaches 209310 19581 30438 0 0 2910 2910 185 29756 1979 9339 26 7 98 28 0 10202 810 9339 371 N.C. N.C. 9339 345
Centre-du-Québec 171157 22421 17860 0 0 1788 1788 124 16090 1007 1405 17 3 57 22 0 1405 144 1405 78 N.C. N.C. 1405 72
Montréal-Laval 240589 28325 117658 2 9 6409 6420 1593 68129 2865 28862 159 43 633 134 0 28873 1165 29026 865 N.C. N.C. 28555 824
Ouest du Québec 127912 15897 27158 0 7 2207 2214 193 26241 1494 1271 22 1 70 15 0 1270 211 1271 65 N.C. N.C. 1272 63
Montérégie 159711 17729 54530 0 0 3120 3120 286 48123 1909 212 0 0 2 0 0 212 5 212 6 N.C. N.C. 212 6
Province of Québec 1015005 116221 313216 4 20 20330 20354 2493 206985 10664 43304 257 67 956 216 0 44178 2519 43446 1485 N.C. N.C. 42999 1423
P.H.O.L. - Ottawa 30611 7738 6528 28 136 66 224 3 6528 355 4621 0 0 0 0 143 4621 21 4621 115 4621 482 4621 212
EORLA 98917 9220 19615 0 0 1426 1426 61 19615 1332 1640 13 14 61 20 0 1640 58 1640 64 1640 354 1640 102
P.H.O.L. - Kingston 32520 5097 3700 9 92 38 138 3 3697 180 2950 0 0 0 0 157 2951 32 2950 81 2950 382 2950 106
UHN / Mount Sinai Hospital 108221 7864 29933 7 44 364 415 62 29933 326 2503 2 2 65 4 0 2470 9 2503 16 2503 104 2503 98
P.H.O.L. - Toronto 55823 11784 36084 193 2420 157 1187 77 36047 1364 32207 0 0 0 0 1556 32211 711 32204 1109 32207 3572 32204 1398
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 96501 6510 96500 150 1479 731 2360 393 96501 2244 73804 4 0 16 0 979 73817 825 74119 969 74067 2758 73959 1076
P.H.O.L. - Sault Ste. Marie 1908 346 777 1 52 15 58 0 777 25 684 0 0 0 0 54 684 5 684 31 684 58 684 44
P.H.O.L. - Timmins 9629 924 1220 0 161 6 156 0 1218 98 1113 0 0 0 0 56 1113 14 1113 29 1113 103 1113 49
St. Joseph's - London 131808 15671 21590 0 0 886 886 76 21590 1016 2751 0 0 0 0 96 2785 93 2785 74 2785 381 2374 108
P.H.O.L. - London 40290 8309 13150 18 587 63 650 28 13149 891 10749 0 0 0 0 566 10750 153 10750 267 10749 1162 10750 330
P.H.O.L. - Orillia 723 288 2694 6 261 23 290 16 2694 238 2614 0 0 0 0 157 2615 88 2614 83 2614 400 2614 108
P.H.O.L. - Thunder Bay 9004 1805 1267 0 107 3 110 0 1266 96 1116 0 0 0 0 38 1116 21 1116 29 1116 152 1117 40
P.H.O.L. - Sudbury 2222 327 903 1 65 14 67 0 903 79 782 0 0 0 0 30 782 9 782 51 782 63 782 25
P.H.O.L. - Hamilton 27999 7280 10902 38 305 92 418 41 10899 560 8320 0 0 0 0 376 8322 229 8320 268 8320 882 8320 302
P.H.O.L. - Peterborough 5756 1058 2202 4 69 11 84 19 2200 118 1841 0 0 0 0 80 1841 56 1841 50 1841 366 1841 50
St. Joseph's - Hamilton 113728 14370 61687 0 0 2783 2783 531 61687 2309 61687 0 0 1190 0 0 61687 1052 61687 975 61687 3966 0 0
Sault Area Hospital 13247 2177 9158 1 262 258 521 8 9158 173 3317 38 9 74 4 0 3317 62 3317 101 3317 370 3324 88
Province of Ontario 778907 100768 317910 456 6040 6936 11773 1318 317862 11404 212699 57 25 1406 28 4288 212722 3438 213046 4312 212996 15555 150796 4136
Manitoba 83125 12545 52651 18 205 1819 2042 87 52651 1811 6244 48 56 179 16 0 6234 190 6838 229 6244 1138 6838 225
Saskatchewan 181281 14181 48499 7 41 3997 4045 82 40204 2218 16686 169 135 534 116 0 16688 504 16688 688 16689 2062 16684 544
Alberta 269013 35807 157965 1108 7312 2854 11274 795 141829 7692 54544 404 200 988 151 0 54524 854 53731 1268 53641 5540 54543 1358
Prairies 533419 62533 259115 1133 7558 8670 17361 964 234684 11721 77474 621 391 1701 283 0 77446 1548 77257 2185 76574 8740 78065 2127
British Columbia 261681 27881 156624 609 4366 315 9226 331 148537 8279 35811 445 245 1193 348 6 35779 1300 35779 1222 34619 5446 34639 1207
Yukon 5633 424 1102 3 136 0 142 9 1100 61 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 1824 195 1658 10 147 1 158 5 1658 115 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 1658 351 N.C. N.C.
Nunavut 5750 399 3495 8 230 3 241 234 3495 166 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 13207 1018 6255 21 513 4 541 248 6253 342 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. 1658 351 N.C. N.C.
CANADA 2916643 363231 1174992 2257 18999 45283 68819 5415 1028095 47942 391616 1532 840 5927 1069 4294 392460 9579 391853 9862 348182 32980 328779 9802

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 11.89 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 11.79 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 11.74 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 11.43 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 0.52 0.26 0.01 24.27 6.74 14.55 1.16 0.01 0.00 13.11 1.05 6.86 2.20 3.71 0.03 12.11 6.29 8.83
12 2023-03-25 11.29 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 10.85 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 10.92 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 11.37 0.60 3.84 0.01 17.75 2.18 8.72 1.93 0.02 0.00 12.22 2.00 7.55 1.41 3.46 0.11 7.73 4.64 5.97
16 2023-04-22 10.94 0.51 6.98 0.00 13.67 2.13 6.80 1.85 0.01 0.00 11.94 2.56 7.68 1.31 2.97 0.23 6.64 4.40 5.40
17 2023-04-29 10.08 0.48 9.67 0.00 11.31 1.28 5.34 1.83 0.01 0.00 12.18 2.94 7.49 1.14 2.84 0.21 5.79 3.52 4.58
18 2023-05-06 9.85 0.50 11.28 0.00 8.05 0.89 3.95 1.81 0.01 0.00 10.20 2.62 6.31 0.86 2.34 0.27 4.86 2.78 3.62
19 2023-05-13 9.60 0.66 12.58 0.00 8.27 0.90 3.26 1.46 0.05 0.00 9.33 2.12 5.72 0.72 2.40 0.24 4.61 2.30 3.16
20 2023-05-20 9.33 0.77 10.28 0.00 6.42 0.56 2.33 1.29 0.07 0.01 7.59 1.12 4.89 0.61 2.52 0.18 4.46 1.59 2.66
21 2023-05-27 9.23 0.51 9.73 0.01 4.40 0.12 1.67 1.13 0.04 0.00 5.43 0.91 3.93 0.40 2.25 0.25 4.10 1.23 2.13
22 2023-06-03 8.45 0.53 8.38 0.00 2.98 0.29 1.35 1.02 0.06 0.00 3.51 0.53 2.51 0.55 2.40 0.26 3.72 0.86 1.71
23 2023-06-10 7.44 0.62 6.88 0.00 2.55 0.56 1.07 0.69 0.13 0.00 2.78 0.32 1.79 0.41 2.10 0.18 3.38 0.77 1.56
24 2023-06-17 6.69 0.57 4.95 0.02 2.82 0.30 0.93 0.47 0.06 0.00 2.11 0.27 1.32 0.32 1.95 0.32 3.22 0.50 1.37
25 2023-06-24 6.18 0.60 2.95 0.00 2.78 0.32 0.97 0.35 0.08 0.00 1.35 0.32 0.91 0.34 1.82 0.31 2.91 0.42 1.05
26 2023-07-01 5.79 0.52 2.19 0.00 2.04 0.48 1.08 0.19 0.06 0.00 1.08 0.21 0.73 0.37 1.45 0.27 2.06 0.26 0.79
27 2023-07-08 5.75 0.40 1.19 0.00 1.90 0.30 1.06 0.19 0.04 0.00 1.04 0.06 0.42 0.33 1.47 0.43 1.85 0.30 0.81
28 2023-07-15 6.14 0.58 0.74 0.00 1.35 0.34 0.65 0.22 0.05 0.00 0.59 0.00 0.26 0.38 1.40 0.11 1.48 0.35 0.67
29 2023-07-22 6.94 0.45 0.63 0.00 1.38 0.47 0.93 0.09 0.05 0.00 0.40 0.00 0.15 0.48 1.48 0.82 1.28 0.11 0.48
30 2023-07-29 7.70 0.45 0.36 0.04 1.29 0.40 0.75 0.04 0.02 0.00 0.31 0.06 0.15 0.48 1.08 0.93 1.96 0.14 0.64
31 2023-08-05 8.41 0.38 0.26 0.00 1.57 0.40 0.92 0.08 0.04 0.00 0.36 0.00 0.19 0.48 1.18 1.36 1.42 0.31 0.68
32 2023-08-12 9.39 0.58 0.16 0.00 1.19 0.45 0.77 0.06 0.02 0.00 0.32 0.00 0.15 0.54 1.14 1.52 1.84 0.16 0.64
33 2023-08-19 11.58 0.57 0.16 0.00 1.51 0.32 0.69 0.09 0.02 0.00 0.25 0.06 0.16 0.45 1.37 1.98 1.96 0.25 0.76
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 9.77 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 4.72 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 9.16 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 8.67 8.20 6.18 16.10 10.84 13.78 3.89 2.19 0.16 7.88 1.97 5.20 2.79 1.84 0.82 3.21 1.85 2.32 3.93 2.18 0.04 7.16 3.71 5.90 3.64 4.91 0.69 4.99 3.51 4.32
17 2023-04-29 9.88 7.74 7.23 18.29 13.64 16.16 4.07 1.78 0.61 8.67 2.07 6.01 2.63 1.37 0.35 2.54 1.70 2.10 3.53 2.40 0.04 6.58 4.68 5.64 4.36 4.91 0.96 4.11 2.54 3.37
18 2023-05-06 10.97 7.41 5.63 20.03 12.39 16.31 4.84 2.07 0.08 8.42 3.19 5.85 3.57 1.32 0.77 2.89 1.36 2.23 3.15 2.55 0.00 6.37 3.14 5.08 3.42 4.80 0.69 4.00 2.36 3.09
19 2023-05-13 11.03 8.36 7.40 21.71 15.70 19.30 4.09 2.71 0.21 9.09 3.67 5.95 2.96 1.52 0.98 2.63 1.66 2.07 2.51 3.63 0.04 7.46 3.23 4.80 3.46 4.37 0.86 3.71 1.58 2.36
20 2023-05-20 10.82 9.06 8.13 24.52 16.67 19.75 4.12 3.29 0.05 8.60 3.90 6.75 3.18 1.68 0.71 3.35 1.79 2.44 1.79 4.79 0.14 6.85 2.55 4.99 2.71 4.53 0.75 3.31 1.87 2.49
21 2023-05-27 10.68 10.26 6.36 25.86 16.41 21.07 4.33 3.47 0.25 9.56 6.00 7.27 3.26 1.95 1.05 3.51 1.41 2.39 1.44 5.69 0.10 6.80 3.22 4.63 2.15 3.64 1.17 2.37 1.10 1.74
22 2023-06-03 10.83 9.14 4.59 23.76 17.55 20.50 5.12 3.32 0.35 8.71 5.94 6.99 3.16 1.56 0.82 3.45 1.91 2.79 1.23 5.22 0.11 5.39 2.43 3.84 2.31 3.78 0.69 2.06 0.56 1.23
23 2023-06-10 12.30 13.26 6.14 23.65 18.15 21.01 4.42 4.59 0.17 9.74 5.14 6.94 3.10 2.26 0.71 2.72 1.69 2.18 1.41 5.35 0.06 4.49 2.25 3.18 1.50 2.93 0.74 1.86 0.47 1.08
24 2023-06-17 12.22 14.36 8.01 26.76 20.72 23.68 4.26 4.70 1.52 8.25 5.76 7.01 4.24 2.36 1.43 3.80 1.96 2.89 0.97 6.29 0.12 3.48 1.85 2.67 1.61 3.09 0.62 1.54 0.88 1.19
25 2023-06-24 13.93 16.62 8.12 26.73 20.65 23.03 4.37 5.58 2.36 7.61 4.34 6.13 3.82 1.91 1.49 3.30 1.80 2.63 0.82 6.96 0.00 4.18 0.89 2.01 1.63 3.60 0.49 1.55 0.66 1.09
26 2023-07-01 12.97 16.96 9.31 30.25 22.65 25.25 4.22 5.11 2.54 8.72 4.97 6.42 4.04 2.87 1.16 3.49 1.55 2.43 1.02 6.29 0.12 4.28 0.60 2.05 1.13 2.02 0.53 1.77 0.36 0.76
27 2023-07-08 13.93 16.40 12.79 29.34 21.60 24.75 4.90 5.67 4.19 8.37 3.78 6.03 4.63 2.68 1.08 4.02 1.86 2.67 0.76 7.22 0.00 2.35 1.08 1.69 0.77 1.89 0.87 1.29 0.30 0.68
28 2023-07-15 13.74 16.12 14.81 25.35 22.07 23.65 4.09 5.78 2.41 8.38 3.40 5.36 4.27 2.54 1.31 3.02 1.87 2.55 0.52 4.88 0.07 2.28 0.44 1.22 0.59 1.07 0.17 1.17 0.30 0.60
29 2023-07-22 13.27 13.96 18.26 22.73 20.04 21.41 4.04 4.49 3.95 6.57 3.76 4.83 3.37 2.47 1.03 3.00 1.78 2.28 0.75 3.65 0.06 1.58 0.66 0.94 0.52 0.64 0.89 1.32 0.17 0.69
30 2023-07-29 13.02 11.53 22.88 21.00 18.90 20.22 3.43 4.87 2.08 7.25 2.75 4.60 3.45 2.71 0.98 2.97 1.60 2.26 0.41 4.03 0.12 1.47 0.24 0.87 0.55 1.38 1.07 1.33 0.27 0.53
31 2023-08-05 12.69 11.53 29.00 21.14 17.43 19.41 3.14 4.70 1.62 6.03 2.95 4.17 2.74 2.48 0.69 2.57 1.65 2.15 0.18 3.06 0.19 1.35 0.71 0.98 0.60 0.61 0.41 0.67 0.26 0.45
32 2023-08-12 13.80 13.14 22.06 26.07 16.14 20.44 3.18 4.31 2.55 4.64 1.86 3.01 2.29 2.55 1.18 2.68 1.77 2.26 0.41 3.40 0.24 1.11 0.17 0.56 0.39 0.33 0.52 0.87 0.09 0.48
33 2023-08-19 12.75 13.82 22.68 23.10 18.63 20.64 2.81 3.43 1.94 3.75 1.79 2.73 2.10 2.51 0.78 2.95 1.77 2.31 0.35 3.00 0.05 1.10 0.07 0.50 0.78 0.33 0.37 0.72 0.20 0.44

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 56255 11.89 6104 18.18 19683 11.59 16025 12.38 10040 8.40 4144 10.71 259 9.65
7 2023-02-18 55033 11.79 5613 17.66 19596 11.17 15744 12.81 9694 8.32 4179 10.91 207 14.49
8 2023-02-25 52551 11.74 4878 18.63 19200 11.20 14836 12.15 9171 8.45 4259 11.86 207 13.53
9 2023-03-04 53644 11.19 5550 16.85 19339 10.82 15219 11.39 9232 8.77 4055 10.09 249 9.64
10 2023-03-11 51399 11.43 4959 18.33 18106 10.52 14995 11.34 8995 9.69 4122 11.28 222 10.81
11 2023-03-18 50826 11.59 4754 17.37 17765 10.26 15074 11.90 9191 10.14 3828 13.01 214 9.35
12 2023-03-25 48733 11.29 4607 16.21 16710 10.15 14209 10.89 9087 10.08 3939 14.78 181 7.73
13 2023-04-01 46607 10.85 4341 16.47 17132 9.38 13065 9.94 8216 10.22 3676 15.86 177 6.78
14 2023-04-08 40799 10.92 3595 15.35 15657 10.40 10310 9.28 7634 10.07 3408 15.76 195 5.64
15 2023-04-15 41872 11.37 3771 15.43 16447 10.52 10477 9.48 7269 10.55 3736 18.31 172 2.33
16 2023-04-22 40231 10.94 3412 13.25 16103 9.69 9788 9.28 7057 11.21 3660 18.63 211 4.27
17 2023-04-29 38134 10.08 2700 13.52 15387 9.25 9083 7.85 7102 9.48 3690 18.02 172 2.91
18 2023-05-06 35581 9.85 2743 14.69 14520 8.49 8229 8.48 6765 9.98 3123 15.63 201 3.48
19 2023-05-13 31622 9.60 2557 15.68 12892 8.32 7456 8.64 5733 9.14 2794 13.92 190 2.11
20 2023-05-20 29753 9.33 2463 15.63 11868 8.49 6935 8.51 5833 7.63 2498 13.53 156 5.77
21 2023-05-27 27278 9.23 2311 14.11 10150 8.69 6566 9.15 5577 7.55 2481 11.08 193 6.22
22 2023-06-03 26683 8.45 2143 12.13 9842 8.63 6854 8.59 5368 6.09 2286 10.06 190 0.00
23 2023-06-10 24430 7.44 2274 15.17 9116 7.42 5647 6.34 5078 4.81 2171 8.89 144 1.39
24 2023-06-17 22707 6.69 2096 12.45 8566 5.70 5230 7.09 4579 4.26 2102 9.51 134 3.73
25 2023-06-24 20788 6.18 2126 11.19 7213 5.41 4997 6.36 4294 3.98 2061 8.01 97 3.09
26 2023-07-01 20066 5.79 1828 7.82 7184 5.83 4671 5.44 4209 3.94 2070 8.70 104 0.00
27 2023-07-08 19074 5.75 1685 9.14 6792 5.58 4457 5.47 4118 3.01 1939 9.95 83 2.41
28 2023-07-15 18813 6.14 1688 10.13 6640 5.38 4625 7.26 3925 3.57 1845 8.24 90 0.00
29 2023-07-22 18383 6.94 1560 8.91 6202 6.90 4887 7.47 3875 5.08 1750 8.17 109 2.75
30 2023-07-29 18540 7.70 1675 7.82 6178 7.59 4663 8.19 4105 7.16 1823 8.23 96 2.08
31 2023-08-05 18166 8.41 1684 8.49 6352 9.54 4533 7.65 3826 7.21 1700 9.12 71 1.41
32 2023-08-12 19314 9.39 1571 10.18 7151 11.42 4756 7.74 3986 7.90 1756 8.20 94 9.57
33 2023-08-19 21838 11.58 1716 11.77 7861 13.85 5757 11.06 4491 8.02 1933 12.16 80 7.50

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 25449 0.57 0.50 2864 0.07 0.03 6409 1.09 0.94 7307 0.23 0.33 5236 0.67 0.44 3545 0.62 0.28 88 0.00 10.23
9 2023-03-04 26136 0.63 0.70 2917 0.31 0.07 6757 1.11 1.42 7347 0.37 0.48 5626 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 25613 0.52 1.16 2824 0.35 0.14 6927 0.90 1.82 6957 0.34 0.86 5382 0.37 1.26 3416 0.53 0.94 107 0.00 5.61
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 24352 0.64 1.74 2435 0.45 0.21 6887 1.47 3.44 6826 0.38 1.35 4959 0.22 1.11 3126 0.22 0.61 119 0.00 12.61
14 2023-04-08 22978 0.38 1.85 2099 0.10 0.19 6354 0.76 3.12 6082 0.23 1.66 5198 0.21 1.48 3114 0.39 0.74 131 0.00 16.79
15 2023-04-15 23421 0.60 1.93 2175 0.18 0.23 6913 1.27 3.31 6142 0.33 1.73 4918 0.37 1.40 3156 0.32 0.44 117 0.00 24.79
16 2023-04-22 22666 0.51 1.85 1928 1.09 0.10 6585 0.80 2.99 5961 0.29 1.41 4720 0.38 1.33 3293 0.21 0.73 179 0.00 27.93
17 2023-04-29 21493 0.48 1.83 1771 0.28 0.17 6155 0.70 2.79 5560 0.11 1.67 4595 0.67 1.87 3292 0.52 0.30 120 0.83 25.00
18 2023-05-06 20580 0.50 1.81 1775 0.17 0.28 6066 0.45 2.75 5250 0.25 1.81 4639 1.08 1.64 2701 0.37 0.41 149 0.00 12.75
19 2023-05-13 18936 0.66 1.46 1679 0.30 0.24 5732 0.66 2.08 4563 0.35 1.47 4393 1.34 1.55 2436 0.29 0.25 133 0.00 9.77
20 2023-05-20 17524 0.77 1.29 1623 0.62 0.18 5277 0.95 1.80 4619 0.50 1.45 3909 1.13 1.13 2010 0.30 0.10 86 2.33 17.44
21 2023-05-27 16495 0.51 1.13 1568 0.19 0.13 4895 0.65 1.59 4117 0.27 1.29 3752 0.64 0.96 2039 0.69 0.39 124 0.00 8.06
22 2023-06-03 16098 0.53 1.02 1504 0.00 0.07 4581 0.37 1.66 4283 0.40 1.19 3671 0.60 0.63 1907 1.21 0.21 152 3.95 5.92
23 2023-06-10 14412 0.62 0.69 1577 0.19 0.00 3699 0.49 1.05 3719 0.67 0.99 3533 0.59 0.34 1774 1.24 0.56 110 0.91 0.91
24 2023-06-17 13758 0.57 0.47 1496 0.27 0.27 3470 0.61 0.78 3614 0.47 0.50 3320 0.42 0.36 1759 1.14 0.11 99 3.03 2.02
25 2023-06-24 13253 0.60 0.35 1466 0.14 0.00 3340 0.63 0.57 3415 0.32 0.56 3225 0.28 0.16 1735 2.13 0.12 72 0.00 1.39
26 2023-07-01 13121 0.52 0.19 1320 0.23 0.00 3338 0.30 0.42 3403 0.24 0.21 3173 0.57 0.09 1817 1.60 0.06 70 0.00 0.00
27 2023-07-08 12397 0.40 0.19 1059 0.19 0.09 3218 0.19 0.22 3163 0.38 0.19 3127 0.42 0.26 1767 0.96 0.00 63 0.00 1.59
28 2023-07-15 12316 0.58 0.22 1053 0.09 0.00 3019 0.17 0.10 3411 0.91 0.47 3098 0.36 0.16 1669 1.38 0.18 66 1.52 0.00
29 2023-07-22 11589 0.45 0.09 915 0.33 0.00 2694 0.30 0.07 3435 0.55 0.17 3011 0.20 0.03 1446 1.04 0.07 88 1.14 0.00
30 2023-07-29 11590 0.45 0.04 964 0.10 0.00 2645 0.15 0.04 3356 0.27 0.06 3043 0.39 0.03 1513 1.72 0.07 69 0.00 0.00
31 2023-08-05 11369 0.38 0.08 856 0.00 0.12 2700 0.26 0.07 3299 0.18 0.06 3074 0.29 0.10 1383 1.45 0.07 57 1.75 0.00
32 2023-08-12 11867 0.58 0.06 870 0.00 0.00 2924 0.34 0.07 3540 0.34 0.11 3021 0.43 0.03 1452 2.27 0.00 60 1.67 0.00
33 2023-08-19 12631 0.57 0.09 901 1.33 0.00 3221 0.40 0.06 3941 0.38 0.15 3124 0.19 0.06 1394 1.87 0.07 50 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 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 22395 4.54 2721 6.43 4066 3.91 7307 2.29 4872 5.69 3341 6.76 88 14.77
9 2023-03-04 22965 3.73 2800 4.39 4224 3.10 7347 2.10 5274 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 2.20 2727 2.57 4216 2.21 6957 1.29 5084 1.89 3282 3.69 107 20.56
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 21203 1.64 2369 2.41 4251 1.88 6826 0.88 4693 1.26 2945 2.85 119 6.72
14 2023-04-08 20026 1.34 2088 1.92 3817 1.91 6082 0.64 4955 0.93 2953 1.79 131 12.98
15 2023-04-15 20156 1.41 2164 2.22 4170 1.77 6142 0.94 4653 0.84 2910 1.92 117 7.69
16 2023-04-22 19854 1.31 1942 2.57 4094 1.69 5961 0.57 4501 0.73 3177 1.89 179 7.82
17 2023-04-29 18841 1.14 1755 2.05 3925 1.91 5560 0.49 4355 0.62 3126 1.31 120 6.67
18 2023-05-06 18059 0.86 1771 1.92 3858 1.30 5250 0.50 4422 0.45 2609 0.65 149 6.04
19 2023-05-13 16607 0.72 1636 1.28 3609 1.08 4563 0.48 4232 0.28 2434 0.49 133 10.53
20 2023-05-20 15326 0.61 1617 1.11 3253 0.92 4619 0.54 3741 0.21 2010 0.40 86 5.81
21 2023-05-27 14441 0.40 1560 0.90 2991 0.67 4116 0.27 3615 0.08 2035 0.25 124 4.03
22 2023-06-03 14242 0.55 1500 1.00 2876 1.08 4283 0.16 3524 0.40 1907 0.26 152 4.61
23 2023-06-10 13314 0.41 1572 0.64 2733 0.55 3719 0.27 3407 0.23 1773 0.39 110 4.55
24 2023-06-17 12735 0.32 1490 0.54 2537 0.75 3613 0.14 3238 0.19 1758 0.17 99 0.00
25 2023-06-24 12283 0.34 1460 0.62 2451 0.69 3415 0.12 3151 0.13 1734 0.46 72 0.00
26 2023-07-01 12269 0.37 1317 0.68 2575 0.70 3403 0.38 3087 0.06 1817 0.17 70 1.43
27 2023-07-08 11619 0.33 1055 0.95 2533 0.51 3163 0.28 3038 0.07 1767 0.17 63 1.59
28 2023-07-15 11556 0.38 1050 0.19 2348 0.81 3410 0.38 3014 0.17 1668 0.24 66 1.52
29 2023-07-22 10904 0.48 913 0.55 2100 1.29 3430 0.38 2927 0.17 1446 0.14 88 0.00
30 2023-07-29 10924 0.48 956 0.63 2083 1.39 3355 0.27 2948 0.10 1513 0.20 69 2.90
31 2023-08-05 10735 0.48 850 0.71 2144 0.89 3297 0.30 3004 0.40 1383 0.00 57 7.02
32 2023-08-12 11025 0.54 867 0.58 2215 1.13 3540 0.56 2891 0.14 1452 0.34 60 1.67
33 2023-08-19 11668 0.45 889 0.67 2367 0.72 3941 0.48 3027 0.20 1394 0.07 50 6.00

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 9020 3.06 421 9.03 788 4.44 5409 1.37 1641 5.42 761 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 8476 3.48 428 10.51 764 4.32 4991 1.74 1525 5.11 768 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 8023 3.83 482 9.13 825 4.00 4592 2.16 1446 6.09 678 6.34
16 2023-04-22 7629 3.89 450 7.11 821 3.90 4321 2.31 1385 6.21 652 7.21
17 2023-04-29 7257 4.07 443 8.13 802 4.11 4032 2.90 1289 4.81 691 6.80
18 2023-05-06 7234 4.84 390 7.69 806 3.85 4052 3.38 1352 7.10 634 8.83
19 2023-05-13 6623 4.09 342 4.68 802 4.36 3592 3.31 1288 5.12 599 5.84
20 2023-05-20 6356 4.12 367 5.72 723 4.84 3546 3.19 1084 3.78 636 8.18
21 2023-05-27 5885 4.33 378 8.73 712 3.37 3131 3.39 1047 4.97 617 6.48
22 2023-06-03 5933 5.12 305 9.18 739 3.79 3325 4.42 966 5.49 598 8.03
23 2023-06-10 5590 4.42 332 6.02 712 4.35 2983 4.06 1010 4.06 553 6.15
24 2023-06-17 5284 4.26 323 4.95 708 5.23 2764 3.36 943 4.45 546 6.78
25 2023-06-24 5107 4.37 329 4.26 723 4.84 2673 3.74 844 3.91 538 7.62
26 2023-07-01 5097 4.22 281 3.91 731 4.51 2716 4.05 857 3.15 512 6.64
27 2023-07-08 4812 4.90 278 4.68 714 4.62 2435 4.27 879 3.64 506 10.67
28 2023-07-15 5134 4.09 306 1.96 704 4.83 2716 3.79 907 2.54 501 8.78
29 2023-07-22 5045 4.04 268 4.48 705 4.40 2672 4.30 925 2.16 475 5.47
30 2023-07-29 5045 3.43 308 3.57 753 3.19 2624 3.62 878 2.28 482 4.77
31 2023-08-05 4903 3.14 264 1.89 696 3.45 2573 3.34 896 1.67 474 5.06
32 2023-08-12 5089 3.18 324 2.16 768 3.39 2711 3.36 824 1.82 462 4.98
33 2023-08-19 5373 2.81 286 2.80 799 2.00 3029 2.87 919 1.74 340 7.06

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 9031 2.75 421 3.09 799 8.64 5409 1.85 1641 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 8487 2.39 428 3.04 776 7.09 4991 1.62 1524 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 8039 3.04 482 2.28 841 7.13 4592 2.05 1446 2.84 678 5.60
16 2023-04-22 7670 2.79 450 2.00 839 6.79 4322 2.22 1385 1.95 674 3.71
17 2023-04-29 7265 2.63 443 3.16 811 7.03 4032 1.69 1288 1.40 691 4.92
18 2023-05-06 7253 3.57 390 6.67 824 6.55 4052 2.59 1353 2.88 634 5.52
19 2023-05-13 6651 2.96 342 2.05 831 4.93 3592 2.67 1287 1.63 599 5.34
20 2023-05-20 6379 3.18 367 2.72 746 5.09 3546 2.59 1084 2.21 636 6.13
21 2023-05-27 5923 3.26 379 3.17 749 6.68 3131 2.43 1047 2.20 617 5.19
22 2023-06-03 5923 3.16 305 5.25 771 5.06 3325 2.38 966 2.90 556 4.50
23 2023-06-10 5616 3.10 332 3.92 738 4.88 2983 2.55 1010 2.38 553 4.52
24 2023-06-17 5307 4.24 323 3.41 731 4.65 2764 3.87 943 3.39 546 7.51
25 2023-06-24 5131 3.82 329 2.43 747 6.69 2673 3.07 844 2.49 538 6.51
26 2023-07-01 5122 4.04 281 3.91 757 3.30 2716 3.13 856 4.67 512 8.98
27 2023-07-08 4843 4.63 278 5.04 747 4.28 2435 3.82 877 4.33 506 9.29
28 2023-07-15 5156 4.27 306 6.54 726 4.41 2716 3.46 907 4.19 501 7.19
29 2023-07-22 5069 3.37 268 4.48 730 4.93 2672 2.25 924 3.57 475 6.32
30 2023-07-29 5076 3.45 308 5.52 784 3.06 2624 2.29 878 5.13 482 6.02
31 2023-08-05 4927 2.74 264 2.65 720 4.44 2573 1.48 896 3.35 474 5.91
32 2023-08-12 5104 2.29 324 2.78 784 1.79 2711 1.95 823 2.79 462 3.90
33 2023-08-19 5388 2.10 286 2.45 814 1.97 3029 1.32 919 3.48 340 5.29

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 9019 4.72 421 5.94 791 2.53 5408 4.60 1638 4.82 761 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 8505 5.07 428 7.24 770 3.64 4994 4.71 1545 4.40 768 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 7677 3.93 450 4.89 825 1.82 4325 4.49 1403 2.42 674 5.49
17 2023-04-29 7276 3.53 443 3.84 804 2.36 4036 3.77 1302 2.23 691 5.79
18 2023-05-06 7265 3.15 390 1.28 810 2.10 4053 3.95 1378 1.45 634 4.26
19 2023-05-13 6646 2.51 342 2.05 804 3.73 3595 2.78 1306 0.31 599 4.34
20 2023-05-20 6367 1.79 367 0.27 727 2.20 3545 2.00 1092 0.46 636 3.30
21 2023-05-27 5907 1.44 379 1.06 713 1.96 3136 1.40 1062 0.19 617 3.40
22 2023-06-03 5915 1.23 305 2.30 741 1.48 3327 1.20 986 0.61 556 1.62
23 2023-06-10 4911 1.41 332 1.51 710 1.27 2982 1.37 334 1.80 553 1.45
24 2023-06-17 5267 0.97 323 0.62 710 0.99 2765 0.76 923 1.63 546 1.10
25 2023-06-24 5134 0.82 329 0.61 723 1.24 2675 0.97 869 0.35 538 0.37
26 2023-07-01 5119 1.02 281 0.36 730 1.23 2718 1.10 878 0.34 512 1.76
27 2023-07-08 4839 0.76 278 0.00 713 1.12 2435 0.94 907 0.11 506 0.99
28 2023-07-15 5151 0.52 306 0.00 702 0.85 2719 0.59 923 0.22 501 0.60
29 2023-07-22 5066 0.75 268 0.00 704 1.28 2675 0.75 944 0.42 475 1.05
30 2023-07-29 5073 0.41 308 0.32 752 1.20 2627 0.30 904 0.00 482 0.62
31 2023-08-05 4922 0.18 264 0.00 695 0.29 2570 0.16 919 0.11 474 0.42
32 2023-08-12 5111 0.41 324 0.31 770 0.78 2714 0.41 841 0.24 462 0.22
33 2023-08-19 5399 0.35 286 0.00 799 0.63 3036 0.40 938 0.00 340 0.59

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 N.A. N.A. 1179 10.18 947 16.79 394 15.48
36 2022-09-10 2817 16.22 280 21.79 N.A. N.A. 1089 11.20 1013 18.76 417 17.99
37 2022-09-17 3337 21.73 301 23.59 N.A. N.A. 1368 20.10 1101 20.62 522 24.33
38 2022-09-24 3847 23.50 334 22.16 N.A. N.A. 1689 22.20 1255 21.59 538 31.78
39 2022-10-01 4150 22.89 286 27.62 N.A. N.A. 2001 19.94 1310 22.29 521 31.67
40 2022-10-08 4488 19.32 298 20.47 N.A. N.A. 2235 15.84 1365 19.85 546 29.67
41 2022-10-15 5161 16.70 265 24.91 N.A. N.A. 2963 11.51 1305 20.15 579 28.67
42 2022-10-22 6332 12.95 354 21.47 N.A. N.A. 3863 7.77 1389 18.14 678 26.40
43 2022-10-29 7496 11.05 441 19.05 N.A. N.A. 4632 7.38 1555 13.95 814 20.64
44 2022-11-05 8272 10.23 362 23.20 N.A. N.A. 5245 6.43 1827 12.10 796 24.37
45 2022-11-12 9526 7.77 458 19.87 N.A. N.A. 5837 4.99 2415 7.99 759 19.89
46 2022-11-19 10427 6.93 575 18.43 N.A. N.A. 5952 4.96 2945 6.25 904 14.49
47 2022-11-26 10986 4.88 677 9.75 N.A. N.A. 5927 3.36 2619 4.39 1678 8.70
48 2022-12-03 10959 4.74 808 9.78 N.A. N.A. 6360 3.21 2787 4.81 931 10.20
49 2022-12-10 11309 4.09 962 7.59 N.A. N.A. 6474 2.90 2693 3.64 1064 8.93
50 2022-12-17 11052 4.58 987 8.81 N.A. N.A. 6726 3.20 2213 4.84 1038 8.67
51 2022-12-24 10580 4.49 783 5.75 N.A. N.A. 6652 3.77 2125 4.89 956 7.53
52 2022-12-31 10049 4.50 638 6.11 N.A. N.A. 6330 3.95 2047 5.23 972 5.25
1 2023-01-07 10998 4.19 802 3.12 N.A. N.A. 6872 4.13 2336 4.32 937 5.02
2 2023-01-14 10199 4.71 526 6.65 N.A. N.A. 6464 4.05 2327 4.86 832 7.81
3 2023-01-21 9133 6.68 502 7.57 N.A. N.A. 5849 5.85 1945 5.86 807 13.88
4 2023-01-28 8568 8.22 413 11.14 N.A. N.A. 5631 6.68 1747 8.70 754 16.84
5 2023-02-04 8581 8.94 596 11.07 N.A. N.A. 5367 7.60 1827 8.65 764 17.15
6 2023-02-11 8243 9.97 420 12.62 N.A. N.A. 5291 8.20 1748 10.30 740 20.00
7 2023-02-18 7927 9.87 449 11.58 N.A. N.A. 5234 8.31 1517 10.61 707 18.39
8 2023-02-25 7812 9.55 424 12.03 N.A. N.A. 5232 8.12 1463 10.25 671 17.44
9 2023-03-04 8218 9.77 421 9.26 N.A. N.A. 5408 8.69 1621 10.30 736 16.03
10 2023-03-11 7758 9.42 472 9.32 N.A. N.A. 5023 7.78 1521 12.29 714 14.85
11 2023-03-18 7677 8.77 428 8.41 N.A. N.A. 4994 7.21 1491 10.60 740 15.27
12 2023-03-25 7973 9.31 456 12.06 N.A. N.A. 5167 7.14 1619 12.91 710 14.65
13 2023-04-01 7640 8.35 467 11.78 N.A. N.A. 5062 7.13 1474 9.43 620 12.90
14 2023-04-08 6941 8.95 399 11.03 N.A. N.A. 4352 7.61 1494 10.44 672 12.65
15 2023-04-15 7171 9.16 482 11.00 N.A. N.A. 4591 7.19 1427 11.70 658 16.11
16 2023-04-22 6819 8.67 450 9.33 N.A. N.A. 4325 6.82 1375 11.93 649 13.41
17 2023-04-29 6436 9.88 443 15.12 N.A. N.A. 4036 7.53 1271 12.90 671 14.61
18 2023-05-06 6416 10.97 390 18.21 N.A. N.A. 4053 8.54 1342 13.41 615 17.24
19 2023-05-13 5821 11.03 342 10.53 N.A. N.A. 3596 8.87 1287 13.99 578 17.65
20 2023-05-20 5629 10.82 367 11.99 N.A. N.A. 3545 8.27 1084 15.50 621 16.59
21 2023-05-27 5169 10.68 379 10.03 N.A. N.A. 3137 8.83 1044 13.12 596 16.11
22 2023-06-03 5152 10.83 305 9.18 N.A. N.A. 3327 8.54 955 17.07 536 14.55
23 2023-06-10 4862 12.30 332 15.36 N.A. N.A. 2982 9.32 994 16.90 532 18.23
24 2023-06-17 4542 12.22 323 13.62 N.A. N.A. 2766 8.28 919 18.39 524 20.80
25 2023-06-24 4379 13.93 329 18.54 N.A. N.A. 2675 9.91 835 19.88 525 21.71
26 2023-07-01 4350 12.97 281 14.23 N.A. N.A. 2719 9.01 849 22.03 490 17.76
27 2023-07-08 4077 13.93 278 16.91 N.A. N.A. 2435 8.91 871 22.16 485 22.06
28 2023-07-15 4402 13.74 306 12.42 N.A. N.A. 2719 10.48 893 22.28 479 17.12
29 2023-07-22 4333 13.27 268 16.04 N.A. N.A. 2675 9.57 913 21.36 462 16.45
30 2023-07-29 4278 13.02 308 12.99 N.A. N.A. 2627 11.08 868 18.32 465 13.12
31 2023-08-05 4177 12.69 264 14.77 N.A. N.A. 2570 11.17 879 15.36 455 13.85
32 2023-08-12 4320 13.80 324 19.14 N.A. N.A. 2714 11.72 814 19.04 451 12.20
33 2023-08-19 4548 12.75 286 25.87 N.A. N.A. 3036 10.87 913 15.44 313 11.18

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 7544 3.41 421 5.23 788 7.99 3962 2.73 1637 2.75 736 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 7116 3.70 428 4.67 764 6.41 3638 3.55 1546 2.65 740 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 6369 3.64 450 4.00 821 3.41 3046 3.81 1403 3.56 649 3.08
17 2023-04-29 6056 4.36 443 7.90 802 2.74 2836 4.23 1304 3.99 671 5.22
18 2023-05-06 5940 3.42 390 4.36 806 1.49 2752 4.18 1377 2.61 615 3.74
19 2023-05-13 5486 3.46 342 3.80 802 1.75 2456 4.15 1308 3.21 578 3.29
20 2023-05-20 5136 2.71 367 6.81 723 1.94 2333 2.70 1092 2.11 621 2.25
21 2023-05-27 4786 2.15 379 8.97 712 0.84 2036 1.77 1063 1.41 596 2.01
22 2023-06-03 4882 2.31 305 5.57 739 1.22 2258 2.30 986 2.64 594 1.52
23 2023-06-10 4595 1.50 332 6.33 712 0.28 1994 1.45 1025 0.68 532 1.88
24 2023-06-17 4297 1.61 323 2.48 708 1.27 1775 1.63 967 1.03 524 2.48
25 2023-06-24 4228 1.63 329 4.26 723 0.83 1781 1.74 870 1.03 525 1.71
26 2023-07-01 4166 1.13 281 2.14 731 0.27 1784 1.07 880 1.48 490 1.43
27 2023-07-08 4014 0.77 278 1.80 714 0.70 1628 0.37 909 0.77 485 1.65
28 2023-07-15 4212 0.59 306 0.33 704 0.14 1799 0.44 924 0.54 479 2.09
29 2023-07-22 4195 0.52 268 1.49 705 0.43 1815 0.44 945 0.42 462 0.65
30 2023-07-29 4208 0.55 308 0.97 753 0.53 1773 0.56 909 0.22 465 0.86
31 2023-08-05 3999 0.60 264 0.38 696 0.29 1698 0.77 921 0.22 420 1.43
32 2023-08-12 4113 0.39 324 0.62 768 0.13 1728 0.41 842 0.24 451 0.89
33 2023-08-19 4384 0.78 286 0.70 799 0.25 2048 0.68 938 1.49 313 0.64

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