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Respiratory Virus Report, Week 18 - ending May 7, 2022

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Organization: Public Health Agency of Canada

In this Respiratory Virus Report, the number of detections of coronavirus reflects only seasonal human coronaviruses, not the novel pandemic coronavirus (SARS-CoV-2) that causes COVID-19. For information on COVID-19, see the Coronavirus disease (COVID-19): Outbreak update

Overall Summary

Detections of seasonal respiratory viruses have increased since February 2022, with influenza accounting for most of the increase in recent weeks. Activity of most respiratory viruses is within or below expected levels for this time of year.

  • Influenza is the most common seasonal respiratory virus detected in Canada as we conclude the third week of the influenza season.
    • A total of 1,950 influenza detections were reported (1,948 influenza A, 2 influenza B).
    • Activity of influenza A (11.6% positive) continues to increase, and is above average levels for this time of year.
  • Activity of other respiratory viruses is low; however, activity of seasonal human coronavirus (178 detections; 4.8% positive) remains slightly above expected levels.
  • The number of tests performed for all viruses were above expected levels.
  • 31/34 sentinel laboratories reported surveillance data.

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Abbreviations:
Flu
Influenza
A(H1)pdm09
Influenza A(H1N1)pdm09
A(H3)
Influenza A(H3N2)
A(UnS)
Influenza A(Unsubtyped)
RSV
Respiratory syncytial virus
HPIV
Human parainfluenza virus
HMPV
Human metapneumovirus
ADV
Adenovirus
EV/RV
Enterovirus/Rhinovirus
HCoV
Human coronavirus
Atl
Atlantic Canada
BC
British Columbia
Can
Canada
EORLA
Eastern Ontario Regional Laboratory Association
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
Terr
Territories of Canada
UHN
University Health Network

Respiratory virus detections

Table 1: Respiratory virus detections for the week ending May 7, 2022 (surveillance week 2022-18)
Reporting Laboratory 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 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.C. N.C.
Prince Edward Island 52 0 8 1 9 0 52 3 52 0 0 0 4 0 52 0 52 12 52 13 52 3
Nova Scotia 565 0 0 35 35 0 565 3 27 0 0 2 3 0 27 1 27 2 27 2 27 1
New Brunswick 563 0 0 2 2 0 264 2 12 0 0 0 1 0 12 2 12 0 12 5 12 0
Atlantic 1180 0 8 38 46 0 881 8 91 0 0 2 8 0 91 3 91 14 91 20 91 4
Région Nord-Est 1783 0 1 515 516 0 1057 0 5 2 0 0 0 0 2 0 2 0 N.C. N.C. 1 0
Québec-Chaudière-Appalaches 832 0 0 268 268 1 832 2 31 0 0 0 0 0 293 5 293 6 N.C. N.C. 128 8
Centre-du-Québec 724 0 0 200 200 1 570 0 326 0 2 1 1 0 326 1 326 0 N.C. N.C. 326 0
Montréal-Laval 873 0 2 172 174 0 849 3 333 0 7 0 0 0 333 21 333 4 N.C. N.C. 333 23
Ouest du Québec 371 0 0 81 81 0 371 0 13 0 2 0 0 0 13 0 13 0 N.C. N.C. 13 0
Montérégie 168 0 0 23 23 0 128 0 0 0 0 0 0 0 0 0 0 0 N.C. N.C. 0 0
Province of Québec 4751 0 3 1259 1262 2 3807 5 708 2 11 1 1 0 967 27 967 10 N.C. N.C. 801 31
P.H.O.L. - Ottawa 61 0 1 1 2 0 61 2 61 0 0 0 0 0 61 0 61 2 61 4 61 9
EORLA 267 0 0 22 22 0 267 5 28 0 0 0 0 0 28 1 28 2 28 2 28 1
P.H.O.L. - Kingston 46 0 0 0 0 0 46 1 46 0 0 0 0 0 46 0 46 1 46 6 46 4
UHN / Mount Sinai Hospital 560 0 0 7 7 0 560 1 17 0 0 0 0 0 17 0 17 0 17 0 17 0
P.H.O.L. - Toronto 283 0 2 0 2 0 283 0 283 0 0 0 0 5 283 3 283 9 283 19 283 26
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.
Sunnybrook & Women's College HSC 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.
P.H.O.L. - Sault Ste. Marie 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 17 0 0 0 0 0 17 0 17 0 0 0 0 0 17 0 17 0 17 0 17 0
St. Joseph's - London 46 0 0 6 6 0 46 0 46 0 0 0 0 0 46 3 46 0 46 7 1 0
P.H.O.L. - London 99 0 0 1 1 0 99 0 99 0 0 0 0 2 99 5 99 8 99 7 99 8
P.H.O.L. - Orillia 10 0 0 1 1 0 10 0 10 0 0 0 0 1 10 0 10 2 10 1 10 1
P.H.O.L. - Thunder Bay 8 0 0 0 0 0 8 3 8 0 0 0 0 0 8 0 8 0 8 1 8 0
P.H.O.L. - Sudbury 8 0 0 0 0 0 8 1 8 0 0 0 0 0 8 0 8 0 8 0 8 0
P.H.O.L. - Hamilton 63 0 2 1 3 0 63 0 63 0 0 0 0 1 63 0 63 7 63 7 63 5
P.H.O.L. - Peterborough 22 0 0 0 0 0 22 0 22 0 0 0 0 0 22 0 22 0 22 3 22 0
St. Joseph's - Hamilton 692 0 0 30 30 0 692 4 692 0 0 1 0 0 692 7 692 17 692 39 0 0
Province of Ontario 2183 0 5 69 74 0 2183 17 1401 0 0 1 0 9 1401 19 1401 48 1401 96 664 54
Province of Manitoba 1047 0 3 75 78 0 1047 51 147 0 0 0 2 0 147 4 178 1 147 22 178 4
Province of Saskatchewan 722 0 22 65 87 0 722 104 248 0 1 0 7 0 248 4 248 4 248 27 248 9
Province of Alberta 2448 0 77 176 253 0 995 81 995 0 8 3 8 0 995 8 995 42 995 59 995 21
Prairies 4217 0 102 316 418 0 2764 236 1390 0 9 3 17 0 1390 16 1421 47 1390 108 1421 34
British Columbia 4180 2 18 0 91 0 4037 55 739 0 1 3 6 2 739 14 739 24 731 78 731 55
Yukon 54 0 0 0 1 0 54 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.
Northwest Territories 123 0 37 0 37 0 120 13 2 0 0 0 0 0 2 0 2 0 120 5 2 0
Nunavut 77 0 19 0 19 0 77 16 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C.
Territories 254 0 56 0 57 0 251 32 2 0 0 0 0 0 2 0 2 0 120 5 2 0
Canada 16765 2 192 1682 1948 2 13923 353 4331 2 21 10 32 11 4590 79 4621 143 3733 307 3710 178

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.

The reporting laboratory previously listed as CHEO - Ottawa is now listed as EORLA to better reflect data submitted by this provider.

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: BC Children's and Women's Hospital, Children's and Women's Hospital Laboratory, Fraser Health Medical Microbiology Laboratory, Island Health, Providence Health Care, Powell River Hospital, St. Paul's Hospital, Vancouver General Hospital, Victoria General Hospital, BCCDC Public Health Laboratory, Interior Health Authority sites and Northern Health Authority sites.

Delays in the reporting of data may cause data to change retrospectively.

For British Columbia, only data from subtyped influenza A specimens are included in the weekly number of influenza detections. The sum of A(H1N1)pdm09, A(H3), and A(UnS) positive results may not equal the sum of total Flu A positive results.

Table 2: Cumulative respiratory virus detections from August 29, 2021 to May 7, 2022 (surveillance weeks 2021-35 to 2022-18)
Reporting Laboratory 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 8547 0 0 1 1 0 8546 102 8549 1 7 116 0 154 8556 30 8543 33 8550 1757 N.C. N.C.
Prince Edward Island 2239 0 12 5 17 0 2239 236 2194 0 0 156 4 0 2239 59 2239 55 2239 534 2239 121
Nova Scotia 18535 0 2 114 116 6 18540 320 1516 0 2 41 17 0 1530 14 1530 9 1530 119 1530 39
New Brunswick 15577 0 1 16 17 0 9798 277 2922 0 0 23 6 0 2915 20 2922 10 2922 59 2831 7
Atlantic 44898 0 15 136 151 6 39123 935 15181 1 9 336 27 154 15240 123 15234 107 15241 2469 6600 167
Région Nord-Est 22091 15 1 1082 1098 3 10029 1443 800 2 0 9 1 0 896 17 405 11 N.C. N.C. 1240 23
Québec-Chaudière-Appalaches 7166 0 0 639 639 5 7764 1001 1530 0 10 7 10 0 2289 90 2198 83 N.C. N.C. 1721 72
Centre-du-Québec 7935 0 2 495 497 6 7717 1082 1219 0 5 23 2 0 1219 34 1227 21 N.C. N.C. 1212 16
Montréal-Laval 21997 0 5 679 684 6 21907 2454 7473 8 40 28 5 0 7472 436 7470 347 N.C. N.C. 7469 159
Ouest du Québec 5802 0 5 278 283 0 5744 930 140 0 5 3 4 0 133 8 129 3 N.C. N.C. 129 3
Montérégie 3486 0 0 78 78 0 3188 387 0 0 0 0 0 0 0 0 0 0 N.C. N.C. 0 0
Province of Québec 68477 15 13 3251 3279 20 56349 7297 11162 10 60 70 22 0 12009 585 11429 465 N.C. N.C. 11771 273
P.H.O.L. - Ottawa 6764 2 26 1 29 0 6764 1441 6764 0 0 0 0 733 6764 311 6762 42 6764 2239 6762 282
EORLA 6396 0 0 58 58 0 6371 616 920 0 2 19 2 0 920 16 601 6 920 151 578 21
P.H.O.L. - Kingston 1376 0 4 0 4 0 1384 128 1383 0 0 0 0 130 1383 19 1367 3 1383 308 1367 93
UHN / Mount Sinai Hospital 16930 0 0 32 32 3 16930 103 534 0 0 0 0 0 534 0 534 1 534 14 534 6
P.H.O.L. - Toronto 8933 2 23 1 26 0 8921 276 8921 0 0 0 0 294 8924 123 8918 34 8921 1028 8919 309
Sick Kids Hospital - Toronto 839 0 0 0 0 0 0 0 839 0 2 68 1 0 839 12 839 1 839 233 839 10
Sunnybrook & Women's College HSC 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
P.H.O.L. - Sault Ste. Marie 309 0 2 1 3 0 308 8 308 0 0 0 0 7 308 3 308 1 308 50 308 19
P.H.O.L. - Timmins 424 0 2 0 2 0 424 25 424 0 0 0 0 18 424 1 424 0 424 31 424 26
St. Joseph's - London 12578 0 0 48 48 0 12581 770 11024 0 0 7 0 87 11024 140 11024 39 10978 576 526 2
P.H.O.L. - London 3395 0 17 6 23 0 3394 453 3394 0 0 0 0 164 3394 80 3393 28 3394 459 3393 266
P.H.O.L. - Orillia 831 0 1 1 2 0 831 116 831 0 0 0 0 45 831 26 828 9 831 209 828 60
P.H.O.L. - Thunder Bay 305 0 1 0 1 0 305 22 305 0 0 0 0 24 305 1 305 0 305 58 305 37
P.H.O.L. - Sudbury 320 0 2 0 2 0 320 12 320 0 0 0 0 9 320 1 320 2 320 31 320 9
P.H.O.L. - Hamilton 1692 0 10 1 11 0 1687 68 1687 0 0 0 0 46 1688 13 1687 20 1687 227 1687 103
P.H.O.L. - Peterborough 602 0 0 0 0 0 602 45 595 0 0 0 0 12 595 1 593 1 595 94 593 45
St. Joseph's - Hamilton 21583 0 4 94 98 1 21577 1637 21577 2 0 653 0 0 21577 209 21577 81 21577 1921 0 0
Province of Ontario 83277 4 92 243 339 4 82399 5720 59826 2 4 747 3 1569 59830 956 59480 268 59780 7629 27383 1288
Manitoba 52080 1 48 213 262 0 52080 1205 2592 2 9 74 8 0 2592 43 3923 10 2592 303 3729 82
Province of Saskatchewan 25868 2 197 230 429 0 25837 1473 4671 1 5 197 54 0 4671 81 4671 26 4671 638 4667 261
Province of Alberta 74352 1 294 719 1014 2 29915 3179 29915 2 61 675 195 0 29915 309 29915 245 29915 3426 29915 1438
Prairies 152300 4 539 1162 1705 2 107832 5857 37178 5 75 946 257 0 37178 433 38509 281 37178 4367 38311 1781
British Columbia 179074 7 290 6 587 87 175013 9017 22169 6 13 1065 225 161 22169 426 22165 148 21713 3395 21761 780
Yukon 5397 1 2 2 8 7 5407 304 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 1320 0 92 1 93 0 1255 129 94 0 1 1 0 0 94 2 94 0 1254 136 94 1
Nunavut 15337 0 72 0 72 0 15321 47 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 22054 1 166 3 173 7 21983 480 121 0 1 2 0 0 121 4 121 0 1281 146 118 1
Canada 550080 31 1115 4801 6234 126 482699 29306 145637 24 162 3166 534 1884 146547 2527 146938 1269 135193 18006 105944 4290

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.

The reporting laboratory previously listed as CHEO - Ottawa is now listed as EORLA to better reflect data submitted by this provider.

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: BC Children's and Women's Hospital, Children's and Women's Hospital Laboratory, Fraser Health Medical Microbiology Laboratory, Island Health, Providence Health Care, Powell River Hospital, St. Paul's Hospital, Vancouver General Hospital, Victoria General Hospital, BCCDC Public Health Laboratory, Interior Health Authority sites and Northern Health Authority sites.

Delays in the reporting of data may cause data to change retrospectively.

For British Columbia, only data from subtyped influenza A specimens are included in the weekly number of influenza detections. The sum of A(H1N1)pdm09, A(H3), and A(UnS) positive results may not equal the sum of total Flu A positive results.

Positive respiratory virus tests historical comparison

Figure 1: Positive respiratory 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: 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

a Human coronavirus excludes human coronaviruses SARS-CoV, MERS-CoV and SARS-CoV-2; Includes seasonal human coronaviruses HCoV-229E, HCoV-OC43, HCoV-NL63, HCoV-HKU1.

Figure 1: Positive respiratory 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 2021-2022 A% 2020-2021 A% Max A% Base Min A% Base Av A% Base 2021-2022 B% 2020-2021 B% Max B% Base Min B% Base Av B% Base 2021-2022 RSV% 2020-2021 RSV% Max RSV% Base Min RSV% Base Av RSV% Base 2021-2022 HPIV% 2020-2021 HPIV% Max HPIV% Base Min HPIV% Base Av HPIV% Base 2021-2022 ADV% 2020-2021 ADV% Max ADV% Base Min ADV% Base Av ADV% Base 2021-2022 HMPV% 2020-2021 HMPV% Max HMPV% Base Min HMPV% Base Av HMPV% Base 2021-2022 EV/RV% 2020-2021 EV/RV% Max EV/RV% Base Min EV/RV% Base Av EV/RV% Base 2021-2022 HCoV% 2020-2021 HCoV% Max HCoV% Base Min HCoV% Base Av HCoV% Base
35 2021-09-04 0.04 0.00 1.60 0.11 0.68 0.00 0.02 0.28 0.00 0.13 4.79 0.02 1.34 0.38 0.60 5.99 0.08 3.16 1.15 2.42 1.18 0.27 1.74 0.99 1.43 0.23 0.17 2.04 0.10 0.77 21.97 9.07 27.19 22.44 24.78 1.05 0.06 0.76 0.18 0.45
36 2021-09-11 0.01 0.00 2.11 0.23 0.98 0.00 0.00 0.55 0.00 0.15 7.18 0.04 1.09 0.22 0.57 4.92 0.20 3.31 1.35 2.32 1.15 0.40 2.85 1.42 1.87 0.24 0.06 0.84 0.10 0.48 18.62 8.13 30.69 23.30 26.31 0.62 0.00 0.38 0.12 0.22
37 2021-09-18 0.03 0.00 1.59 0.36 0.87 0.00 0.00 0.19 0.04 0.12 8.09 0.02 1.37 0.31 0.64 5.97 0.13 3.26 1.65 2.40 0.81 0.35 2.44 1.38 1.86 0.17 0.05 1.61 0.00 0.51 27.46 8.07 33.58 27.74 31.68 0.44 0.05 0.56 0.00 0.26
38 2021-09-25 0.00 0.02 2.15 0.43 1.16 0.00 0.00 0.21 0.00 0.14 7.63 0.10 1.24 0.37 0.64 4.73 0.07 2.87 1.92 2.33 0.82 0.58 2.04 1.11 1.63 0.37 0.02 1.43 0.06 0.47 33.16 15.67 39.57 32.80 35.33 0.67 0.00 1.36 0.06 0.43
39 2021-10-02 0.01 0.00 2.65 0.57 1.53 0.00 0.00 0.29 0.09 0.18 9.01 0.05 1.29 0.41 0.68 8.12 0.02 3.01 1.70 2.24 1.14 0.19 2.27 1.04 1.66 0.17 0.04 0.72 0.05 0.28 30.02 24.12 40.59 34.87 37.68 0.62 0.05 0.66 0.07 0.45
40 2021-10-09 0.00 0.00 2.17 1.01 1.58 0.02 0.00 0.20 0.05 0.11 8.98 0.07 1.39 0.34 0.67 8.19 0.02 3.28 1.90 2.43 1.31 0.44 2.25 1.39 1.82 0.16 0.00 0.92 0.05 0.34 26.24 16.62 41.29 33.00 35.43 0.57 0.09 1.08 0.22 0.58
41 2021-10-16 0.03 0.01 2.66 1.05 1.57 0.03 0.00 0.36 0.03 0.16 10.07 0.10 1.74 0.58 0.98 10.46 0.06 3.70 1.94 2.74 1.37 0.37 1.91 1.28 1.70 0.20 0.19 0.95 0.04 0.46 22.91 15.48 33.62 26.94 29.81 1.69 0.02 0.70 0.00 0.33
42 2021-10-23 0.03 0.00 2.96 0.77 1.92 0.02 0.00 0.45 0.05 0.25 8.65 0.07 2.11 0.63 1.14 10.01 0.06 3.89 2.64 3.20 2.54 0.47 2.38 1.47 1.86 0.15 0.06 0.89 0.15 0.38 22.17 13.60 32.62 24.54 27.82 1.07 0.00 1.18 0.20 0.49
43 2021-10-30 0.03 0.01 5.23 0.68 2.60 0.02 0.00 0.55 0.06 0.23 8.55 0.07 2.16 0.55 1.32 9.38 0.07 3.98 3.18 3.56 1.15 0.37 2.42 1.63 1.96 0.36 0.02 1.64 0.12 0.57 19.64 13.14 28.73 21.67 24.95 1.05 0.00 2.35 0.27 0.75
44 2021-11-06 0.10 0.04 8.42 1.08 3.39 0.10 0.03 0.71 0.12 0.31 8.19 0.05 3.35 0.83 1.92 10.27 0.03 4.81 2.94 3.70 1.42 0.22 2.88 1.18 2.20 0.77 0.13 1.08 0.23 0.47 21.44 9.23 23.82 16.75 21.34 2.21 0.00 2.59 0.21 0.88
45 2021-11-13 0.07 0.02 9.83 1.18 4.19 0.06 0.02 0.97 0.22 0.44 7.33 0.04 4.43 1.29 2.59 9.97 0.01 5.42 2.53 4.01 1.61 0.33 2.68 2.02 2.42 0.64 0.01 1.30 0.04 0.77 22.40 9.70 23.08 15.17 20.56 2.54 0.03 2.74 0.52 0.96
46 2021-11-20 0.10 0.03 13.95 1.42 5.47 0.05 0.01 1.49 0.09 0.58 7.49 0.06 6.33 1.38 3.29 8.29 0.04 5.72 1.62 4.19 2.51 0.30 2.90 1.99 2.53 0.99 0.04 1.43 0.18 0.79 21.37 9.02 22.77 15.28 19.27 3.05 0.03 3.32 0.46 1.25
47 2021-11-27 0.12 0.03 15.24 1.25 6.91 0.07 0.04 2.13 0.13 0.80 8.48 0.03 8.69 1.79 4.46 7.04 0.06 7.00 2.36 4.72 1.94 0.32 2.95 1.83 2.35 1.01 0.02 2.02 0.09 0.89 18.53 8.44 20.84 12.15 16.09 3.93 0.04 3.26 0.37 1.25
48 2021-12-04 0.19 0.04 18.07 0.76 9.40 0.15 0.01 3.18 0.08 1.20 9.34 0.02 9.47 3.11 5.72 5.77 0.02 6.14 3.03 4.18 1.89 0.35 3.34 1.66 2.48 1.48 0.02 1.94 0.31 1.08 16.61 7.94 16.72 12.69 13.83 4.96 0.02 4.30 1.00 2.04
49 2021-12-11 0.23 0.03 19.52 1.43 11.41 0.05 0.01 4.21 0.19 1.60 10.51 0.06 12.26 4.87 7.12 3.97 0.00 5.65 2.94 4.19 2.48 0.54 3.03 1.84 2.49 1.22 0.05 2.80 0.49 1.46 14.56 6.21 16.32 10.72 13.07 6.58 0.05 5.19 0.84 2.52
50 2021-12-18 0.23 0.01 26.42 1.97 14.27 0.02 0.01 7.95 0.15 2.55 11.21 0.07 13.19 5.39 7.93 3.23 0.06 5.95 2.54 4.27 2.72 0.51 3.27 1.49 2.45 1.08 0.02 3.32 0.46 1.70 12.39 6.62 13.85 8.43 10.90 7.29 0.11 6.04 1.54 3.16
51 2021-12-25 0.18 0.00 28.53 2.27 16.81 0.02 0.01 10.44 0.19 3.30 9.26 0.07 15.23 6.52 9.27 3.01 0.04 6.71 2.94 3.95 2.54 0.58 3.20 1.36 2.04 1.20 0.04 4.39 0.37 2.44 9.95 5.65 14.18 8.81 10.48 8.18 0.05 6.68 1.87 3.72
52 2022-01-01 0.09 0.00 33.97 3.30 20.41 0.01 0.00 12.73 0.23 4.07 6.96 0.01 17.80 6.83 10.39 2.13 0.03 5.08 2.87 3.75 1.92 0.48 2.59 1.20 1.76 1.00 0.11 3.81 0.41 2.44 7.70 6.53 14.41 6.24 9.23 10.36 0.07 6.73 2.78 4.75
1 2022-01-08 0.08 0.00 30.93 4.58 19.55 0.00 0.00 10.34 0.22 3.86 5.47 0.04 15.62 7.12 10.17 1.84 0.12 5.08 2.68 3.34 1.84 0.81 2.67 0.85 1.54 0.72 0.06 4.45 0.28 2.70 5.71 5.43 11.09 4.36 7.42 9.27 0.12 7.77 3.07 5.16
2 2022-01-15 0.11 0.00 26.80 5.46 19.10 0.01 0.00 11.01 0.29 3.91 4.49 0.07 14.05 6.60 9.63 1.19 0.08 4.12 2.46 3.05 1.13 0.82 2.15 0.87 1.37 0.38 0.03 4.76 0.42 2.66 3.98 5.18 9.55 4.31 6.79 7.49 0.16 7.89 2.84 5.44
3 2022-01-22 0.04 0.01 28.20 9.13 18.94 0.01 0.01 12.75 0.35 4.69 3.55 0.03 15.56 6.72 10.32 0.76 0.05 3.25 2.59 2.82 1.34 0.40 2.10 1.15 1.45 0.24 0.11 5.56 0.47 3.13 3.11 3.56 8.42 4.44 6.01 4.97 0.26 7.90 4.17 6.11
4 2022-01-29 0.05 0.00 27.01 12.34 18.81 0.00 0.00 12.74 0.41 5.15 2.43 0.05 15.88 7.02 11.23 0.64 0.06 3.12 1.77 2.55 1.18 0.46 1.83 1.11 1.49 0.23 0.12 5.19 0.55 3.01 2.59 3.87 9.04 4.89 6.41 3.92 0.16 7.86 3.79 6.08
5 2022-02-05 0.03 0.00 23.66 15.78 19.14 0.01 0.00 14.84 0.41 5.76 2.28 0.04 16.33 7.17 11.49 0.48 0.06 3.48 1.70 2.39 1.57 0.29 1.93 1.36 1.62 0.25 0.16 5.70 0.58 3.29 3.02 4.76 9.79 6.06 6.94 2.83 0.13 8.49 4.55 6.84
6 2022-02-12 0.04 0.02 23.36 15.63 18.79 0.01 0.00 16.23 0.44 6.21 2.18 0.08 15.79 6.52 11.70 0.51 0.10 2.89 1.57 2.19 1.44 0.54 1.74 1.25 1.51 0.42 0.19 5.57 0.65 3.39 3.86 5.08 9.89 6.16 6.98 3.01 0.20 8.57 3.48 6.75
7 2022-02-19 0.02 0.00 24.22 15.48 18.52 0.00 0.00 17.02 0.35 6.54 2.24 0.02 15.53 6.95 11.26 0.44 0.00 3.20 1.42 2.12 1.52 0.49 1.61 1.30 1.51 0.44 0.14 6.05 1.45 3.94 4.44 5.56 8.95 6.00 7.02 3.24 0.13 8.02 4.35 6.54
8 2022-02-26 0.06 0.00 28.62 12.42 18.53 0.02 0.00 16.79 0.45 6.60 2.20 0.05 15.47 6.64 10.63 0.73 0.16 3.21 1.31 2.25 1.85 0.72 2.00 1.38 1.67 0.53 0.04 5.74 1.19 4.08 6.30 4.77 8.35 5.20 6.94 3.67 0.14 8.29 4.21 6.60
9 2022-03-05 0.12 0.00 29.30 11.04 18.35 0.00 0.00 15.45 0.74 6.24 2.62 0.01 15.62 6.54 10.04 0.60 0.07 3.35 1.41 2.44 1.90 0.86 1.92 1.09 1.40 0.40 0.11 6.42 1.87 4.38 7.76 5.48 9.04 5.73 7.75 3.32 0.36 8.01 5.09 6.86
10 2022-03-12 0.16 0.00 29.65 8.51 16.81 0.00 0.00 14.86 0.81 6.41 3.27 0.00 14.97 6.35 9.37 0.68 0.06 4.18 1.19 2.69 1.98 0.38 2.23 1.50 1.78 0.51 0.00 6.74 2.26 4.80 8.20 4.62 10.16 5.55 8.08 3.86 0.34 8.34 4.28 7.01
11 2022-03-19 0.27 0.01 24.27 6.74 14.55 0.01 0.00 13.11 1.05 6.86 3.91 0.03 12.11 6.29 8.83 0.66 0.19 4.58 1.35 3.00 1.88 0.63 2.32 1.23 1.69 0.59 0.11 7.94 2.52 4.71 8.93 4.08 9.45 7.15 8.24 3.25 0.33 8.02 4.35 6.23
12 2022-03-26 0.86 0.00 20.91 5.51 12.67 0.00 0.00 11.53 1.51 7.43 4.04 0.07 10.70 6.46 8.12 1.05 0.00 4.95 1.26 3.34 1.71 0.35 2.13 1.84 1.97 0.77 0.14 6.69 3.65 5.19 9.47 4.61 10.26 8.71 9.66 4.38 0.54 6.99 3.95 5.69
13 2022-04-02 1.52 0.00 18.09 4.67 11.66 0.00 0.00 12.55 1.98 7.90 4.27 0.04 9.32 6.45 7.64 1.39 0.18 5.21 1.48 3.68 2.29 0.35 2.12 1.37 1.70 1.28 0.07 6.90 3.95 5.18 8.44 4.86 12.58 7.69 10.26 4.45 0.30 8.16 3.65 5.46
14 2022-04-09 2.46 0.00 17.83 3.21 9.98 0.01 0.00 13.12 2.12 7.88 4.40 0.08 8.09 5.32 6.44 1.18 0.00 6.26 1.67 4.31 1.74 0.34 2.31 1.50 1.86 1.45 0.04 7.70 4.14 6.00 9.21 5.49 13.59 8.60 12.03 4.24 0.41 7.79 3.84 4.87
15 2022-04-16 3.82 0.01 17.75 2.18 8.72 0.02 0.00 12.22 2.00 7.55 3.74 0.11 7.73 4.64 5.97 1.35 0.12 6.94 1.97 4.61 1.71 0.98 2.62 1.64 2.12 1.52 0.04 7.47 3.81 5.94 9.10 8.23 14.59 9.44 13.16 5.00 1.07 5.52 3.23 4.24
16 2022-04-23 6.95 0.00 13.67 2.13 6.80 0.01 0.00 11.94 2.56 7.68 3.20 0.23 6.64 4.40 5.40 2.19 0.16 7.88 1.97 5.20 1.84 0.82 3.21 1.85 2.32 2.18 0.04 7.16 3.71 5.90 8.15 6.18 16.10 10.84 13.78 4.91 0.69 4.99 3.51 4.32
17 2022-04-30 9.70 0.00 11.31 1.28 5.34 0.01 0.00 12.18 2.94 7.49 3.12 0.21 5.79 3.52 4.58 1.72 0.61 8.67 2.07 6.01 1.53 0.35 2.54 1.70 2.10 2.74 0.04 6.58 4.68 5.64 8.07 7.23 18.29 13.64 16.16 4.91 0.96 4.11 2.54 3.37
18 2022-05-07 11.62 0.00 8.05 0.89 3.95 0.01 0.00 10.20 2.62 6.31 2.54 0.27 4.86 2.78 3.62 1.75 0.08 8.42 3.19 5.85 1.72 0.77 2.89 1.36 2.23 3.09 0.00 6.37 3.14 5.08 8.22 5.63 20.03 12.39 16.31 4.80 0.69 4.00 2.36 3.09

Number of positive respiratory virus tests

Figure 2: Number of positive respiratory virus tests reported by participating laboratories in Canada by surveillance week
Figure 2
Figure 2: Number of positive respiratory virus tests reported by participating laboratories in Canada by surveillance week
Week ParaInfluenza Adenovirus Human metapneumovirus Enterovirus/Rhinovirus Coronavirus Respiratory syncytial virus Influenza
35 158 31 6 557 21 286 3
36 142 33 7 511 14 479 1
37 207 28 6 916 11 628 3
38 179 31 14 1,180 17 649 0
39 329 46 7 1,147 17 771 1
40 313 50 6 920 17 867 2
41 374 49 7 743 48 932 6
42 402 102 6 788 36 941 6
43 391 48 15 729 35 1,033 7
44 405 56 30 777 67 1,134 32
45 447 72 29 932 88 1,144 23
46 366 111 44 869 106 1,076 26
47 337 91 48 795 153 1,236 33
48 275 91 72 736 188 1,526 64
49 219 139 69 758 252 1,849 55
50 189 163 64 684 278 2,268 56
51 165 139 66 508 256 2,414 58
52 109 99 52 374 332 1,906 29
1 93 95 37 280 312 1,378 25
2 62 54 18 178 252 925 28
3 34 60 11 133 154 624 9
4 28 53 10 109 126 355 8
5 19 62 10 115 78 325 6
6 18 51 15 128 70 275 6
7 14 48 14 134 66 266 2
8 22 56 16 179 72 241 9
9 19 61 13 233 71 264 14
10 21 62 16 240 83 305 17
11 20 57 18 252 67 346 29
12 34 56 26 289 104 367 93
13 48 80 45 274 110 420 179
14 43 64 54 310 116 446 313
15 52 67 60 315 154 414 511
16 84 72 86 293 155 414 1,079
17 76 71 129 313 186 449 1,676
18 76 79 143 307 178 353 1,950

Positive influenza (Flu) tests

Figure 3: Positive influenza (Flu) tests (%) in Canada by region by surveillance week
Figure 3
Figure 3: 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 2021-09-04 7140 0.04 0.00 625 0.00 0.00 848 0.12 0.00 1305 0.00 0.00 2849 0.04 0.00 1025 0.10 0.00 488 0.00 0.00
36 2021-09-11 8012 0.01 0.00 675 0.00 0.00 1369 0.00 0.00 1224 0.08 0.00 3302 0.00 0.00 930 0.00 0.00 512 0.00 0.00
37 2021-09-18 9316 0.03 0.00 1009 0.00 0.00 1718 0.00 0.00 1543 0.06 0.00 3450 0.06 0.00 985 0.00 0.00 611 0.00 0.00
38 2021-09-25 9821 0.00 0.00 1141 0.00 0.00 1502 0.00 0.00 1647 0.00 0.00 3632 0.00 0.00 1192 0.00 0.00 707 0.00 0.00
39 2021-10-02 9691 0.01 0.00 1052 0.00 0.00 1089 0.00 0.00 1954 0.00 0.00 3498 0.03 0.00 1611 0.00 0.00 487 0.00 0.00
40 2021-10-09 10776 0.00 0.02 799 0.00 0.00 1641 0.00 0.12 2059 0.00 0.00 3870 0.00 0.00 1823 0.00 0.00 584 0.00 0.00
41 2021-10-16 10372 0.03 0.03 614 0.00 0.00 1704 0.00 0.18 1950 0.05 0.00 3622 0.03 0.00 1904 0.05 0.00 578 0.00 0.00
42 2021-10-23 12508 0.03 0.02 634 0.00 0.00 2050 0.00 0.00 2269 0.04 0.00 4560 0.00 0.00 2440 0.08 0.04 555 0.18 0.18
43 2021-10-30 13341 0.03 0.02 1086 0.00 0.00 2119 0.05 0.00 2143 0.00 0.00 4645 0.04 0.00 2920 0.00 0.07 428 0.23 0.23
44 2021-11-06 15442 0.10 0.10 577 0.00 0.00 2323 0.00 0.00 2473 0.04 0.00 5012 0.00 0.00 4625 0.30 0.28 432 0.23 0.69
45 2021-11-13 17546 0.07 0.06 1195 0.00 0.00 2441 0.04 0.00 2835 0.04 0.00 5278 0.08 0.00 5054 0.14 0.18 743 0.00 0.13
46 2021-11-20 16418 0.10 0.05 1826 0.00 0.00 2261 0.00 0.04 2619 0.19 0.00 4930 0.04 0.00 4339 0.21 0.18 443 0.23 0.00
47 2021-11-27 16917 0.12 0.07 2042 0.05 0.05 2584 0.12 0.04 2979 0.10 0.00 4842 0.00 0.00 4200 0.33 0.24 270 0.00 0.00
48 2021-12-04 18531 0.19 0.15 3195 0.13 0.09 2471 0.08 0.04 3068 0.16 0.00 4731 0.06 0.00 4846 0.45 0.50 220 0.00 0.00
49 2021-12-11 19974 0.23 0.05 3417 0.09 0.00 2880 0.31 0.14 3420 0.23 0.00 4778 0.25 0.00 5172 0.27 0.10 307 0.00 0.00
50 2021-12-18 22543 0.23 0.02 1860 0.27 0.00 2759 0.14 0.00 3883 0.21 0.00 4878 0.10 0.02 8638 0.35 0.03 525 0.00 0.00
51 2021-12-25 28471 0.18 0.02 1238 0.00 0.00 3049 0.59 0.07 4030 0.07 0.00 5324 0.15 0.00 14257 0.16 0.02 573 0.00 0.17
52 2022-01-01 29555 0.09 0.01 1378 0.29 0.00 2560 0.00 0.00 3665 0.14 0.00 6284 0.13 0.02 13696 0.07 0.01 1972 0.00 0.00
1 2022-01-08 28418 0.08 0.00 967 0.00 0.00 2249 0.18 0.00 3668 0.03 0.00 7731 0.17 0.00 11791 0.05 0.01 2012 0.00 0.00
2 2022-01-15 23659 0.11 0.01 1045 0.19 0.00 1400 0.21 0.00 2903 0.03 0.00 6816 0.16 0.00 9996 0.08 0.03 1499 0.00 0.00
3 2022-01-22 19585 0.04 0.01 1195 0.00 0.00 1223 0.16 0.00 2591 0.00 0.08 5637 0.07 0.00 8275 0.01 0.00 664 0.00 0.00
4 2022-01-29 16496 0.05 0.00 1099 0.00 0.00 1136 0.26 0.00 2367 0.00 0.00 4650 0.06 0.00 6638 0.03 0.00 606 0.00 0.00
5 2022-02-05 15977 0.03 0.01 1058 0.00 0.00 844 0.12 0.00 2126 0.00 0.05 4004 0.10 0.00 6671 0.00 0.00 1274 0.00 0.00
6 2022-02-12 13873 0.04 0.01 1069 0.00 0.00 985 0.10 0.00 1981 0.00 0.00 3025 0.03 0.00 5917 0.05 0.02 896 0.00 0.00
7 2022-02-19 13127 0.02 0.00 1094 0.00 0.00 832 0.00 0.00 1941 0.05 0.00 2745 0.04 0.00 5451 0.00 0.00 1064 0.00 0.00
8 2022-02-26 12180 0.06 0.02 1177 0.00 0.00 875 0.34 0.11 1736 0.17 0.00 2457 0.04 0.00 5256 0.00 0.02 679 0.00 0.00
9 2022-03-05 11282 0.12 0.00 1090 0.00 0.00 911 0.00 0.00 1843 0.11 0.00 2649 0.38 0.00 4242 0.05 0.00 547 0.00 0.00
10 2022-03-12 10752 0.16 0.00 1108 0.00 0.00 1040 0.29 0.00 1763 0.06 0.00 2604 0.35 0.00 3713 0.11 0.00 524 0.00 0.00
11 2022-03-19 10207 0.27 0.01 1097 0.00 0.00 902 0.44 0.00 1652 0.24 0.00 2620 0.61 0.00 3617 0.11 0.03 319 0.00 0.00
12 2022-03-26 10808 0.86 0.00 1247 0.08 0.00 1186 0.93 0.00 1766 0.28 0.00 2739 1.90 0.00 3491 0.66 0.00 379 0.26 0.00
13 2022-04-02 11801 1.52 0.00 1324 0.30 0.00 1484 3.44 0.00 1894 1.11 0.00 3260 2.42 0.00 3668 0.63 0.00 171 0.58 0.00
14 2022-04-09 12696 2.46 0.01 1272 0.63 0.08 1644 6.93 0.00 1874 1.17 0.00 4124 3.13 0.00 3620 0.91 0.00 162 3.70 0.00
15 2022-04-16 13311 3.82 0.02 1093 1.65 0.00 1896 11.45 0.05 1905 2.10 0.05 4161 4.16 0.00 4116 1.09 0.00 140 11.43 0.00
16 2022-04-23 15505 6.95 0.01 1429 1.89 0.00 3060 19.61 0.03 1859 1.83 0.00 4601 6.41 0.00 4348 1.86 0.02 208 19.23 0.00
17 2022-04-30 17262 9.70 0.01 991 2.83 0.10 4691 20.49 0.02 2159 4.03 0.00 4773 9.16 0.00 4427 2.58 0.00 221 21.27 0.00
18 2022-05-07 16765 11.62 0.01 1180 3.90 0.00 4751 26.56 0.04 2183 3.39 0.00 4217 9.91 0.00 4180 2.18 0.00 254 22.44 0.00

Positive respiratory syncytial virus (RSV) tests

Figure 4: Positive respiratory syncytial virus (RSV) tests (%) in Canada by region by surveillance week
Figure 4
Figure 4: 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 2021-09-04 5970 4.79 613 0.00 693 37.95 1277 1.49 1875 0.05 1025 0.29 487 0.00
36 2021-09-11 6672 7.18 671 0.60 1069 39.85 1187 3.12 2234 0.22 930 0.54 581 0.34
37 2021-09-18 7761 8.09 997 0.40 1310 40.76 1499 5.07 2361 0.30 985 0.71 609 0.00
38 2021-09-25 8511 7.63 1135 0.00 1356 41.67 1612 3.97 2510 0.32 1192 1.01 706 0.00
39 2021-10-02 8560 9.01 1052 0.10 1104 53.53 1913 7.42 2394 0.54 1611 1.49 486 0.00
40 2021-10-09 9659 8.98 792 0.38 1583 39.36 2015 9.43 2864 0.77 1823 1.59 582 0.00
41 2021-10-16 9259 10.07 608 0.16 1676 42.78 1867 8.36 2627 0.72 1904 2.00 577 0.17
42 2021-10-23 10882 8.65 581 0.17 1845 33.88 2199 9.55 3264 1.01 2440 2.95 553 0.00
43 2021-10-30 12078 8.55 965 0.10 2121 31.02 2105 9.88 3540 1.05 2920 4.35 427 0.47
44 2021-11-06 13841 8.19 564 1.24 2048 26.46 2421 10.45 3768 1.70 4612 5.77 428 0.47
45 2021-11-13 15615 7.33 837 0.84 2239 18.49 2767 9.97 4011 1.75 5024 7.48 737 0.14
46 2021-11-20 14367 7.49 1259 2.54 2064 12.74 2556 13.38 3734 2.25 4312 8.23 442 0.00
47 2021-11-27 14584 8.48 1607 2.68 2132 11.16 2907 13.62 3510 3.87 4160 10.17 268 0.00
48 2021-12-04 16345 9.34 2884 2.67 2164 8.27 3002 14.69 3272 4.68 4806 13.82 217 5.53
49 2021-12-11 17600 10.51 2979 3.63 2519 6.95 3354 19.11 3309 6.20 5134 13.63 305 6.56
50 2021-12-18 20239 11.21 1442 8.18 2354 5.61 3813 15.53 3495 7.44 8611 13.10 524 7.25
51 2021-12-25 26063 9.26 947 6.65 2467 4.82 4029 13.73 3796 9.69 14257 8.86 567 8.47
52 2022-01-01 27388 6.96 1378 4.43 1916 3.60 3664 10.15 4576 9.55 13884 6.64 1970 2.28
1 2022-01-08 25176 5.47 983 6.61 1708 2.93 3668 5.97 5382 6.06 11428 5.90 2007 2.19
2 2022-01-15 20583 4.49 824 6.67 1142 2.10 2903 4.79 4911 4.79 9306 4.82 1497 1.54
3 2022-01-22 17595 3.55 1187 3.54 947 1.37 2591 3.24 4354 3.79 7814 3.90 702 2.14
4 2022-01-29 14630 2.43 935 3.32 827 1.21 2367 1.61 3542 3.87 6356 2.03 603 1.66
5 2022-02-05 14285 2.28 859 1.51 667 1.05 2124 1.65 3006 3.76 6395 2.17 1234 1.46
6 2022-02-12 12590 2.18 998 1.70 749 1.47 1980 0.91 2187 5.49 5784 1.64 892 1.57
7 2022-02-19 11858 2.24 997 1.60 539 0.74 1940 0.98 2008 6.57 5366 1.60 1008 0.89
8 2022-02-26 10935 2.20 1018 1.57 581 0.34 1735 1.21 1718 6.34 5206 1.67 677 0.89
9 2022-03-05 10076 2.62 982 1.83 734 0.95 1843 1.03 1857 7.32 4115 1.92 545 0.92
10 2022-03-12 9339 3.27 914 1.86 720 0.42 1763 1.08 1811 10.38 3609 1.94 522 1.53
11 2022-03-19 8851 3.91 894 2.80 708 0.85 1652 1.27 1799 11.56 3479 2.07 319 4.39
12 2022-03-26 9093 4.04 1027 1.27 828 0.36 1765 0.96 1754 14.60 3343 1.76 376 5.05
13 2022-04-02 9834 4.27 1114 0.81 1012 0.10 1894 0.63 2199 14.05 3448 1.97 167 12.57
14 2022-04-09 10138 4.40 890 1.01 1105 0.18 1873 0.64 2695 12.54 3416 1.90 159 12.58
15 2022-04-16 11079 3.74 1063 1.98 1430 0.21 1908 1.21 2583 11.92 3960 1.21 135 8.15
16 2022-04-23 12932 3.20 1336 1.27 2447 0.12 1864 0.43 2982 10.26 4098 1.49 205 9.27
17 2022-04-30 14386 3.12 910 1.32 3738 0.27 2159 1.44 3138 9.97 4223 1.47 218 9.63
18 2022-05-07 13923 2.54 881 0.91 3807 0.13 2183 0.78 2764 8.54 4037 1.36 251 12.75

Positive human parainfluenza virus (HPIV) tests

Figure 5: Positive human parainfluenza virus (HPIV) tests (%) in Canada by region by surveillance week
Figure 5
Figure 5: 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 2021-09-04 2637 5.99 580 1.38 138 5.07 857 14.47 739 1.89 315 1.59
36 2021-09-11 2884 4.92 653 2.91 149 4.03 805 11.55 955 1.57 317 2.84
37 2021-09-18 3467 5.97 978 3.89 139 0.72 1100 10.73 858 3.03 386 6.22
38 2021-09-25 3783 4.73 1083 3.69 222 0.45 1113 8.18 857 2.33 506 5.34
39 2021-10-02 4050 8.12 1070 4.86 232 1.72 1461 13.07 765 5.88 517 7.16
40 2021-10-09 3822 8.19 721 6.38 314 1.27 1542 12.39 717 5.58 524 6.11
41 2021-10-16 3574 10.46 543 6.45 335 0.90 1461 13.76 725 7.31 510 16.08
42 2021-10-23 4017 10.01 628 5.41 454 0.44 1631 11.77 769 8.19 531 20.90
43 2021-10-30 4170 9.38 822 2.92 414 0.97 1541 11.29 778 8.10 608 20.72
44 2021-11-06 3942 10.27 415 10.84 293 0.34 1690 10.00 835 8.26 708 17.09
45 2021-11-13 4483 9.97 708 6.78 317 0.95 1772 8.47 864 9.72 819 19.78
46 2021-11-20 4413 8.29 597 4.02 349 0.57 1735 6.80 975 9.33 756 17.33
47 2021-11-27 4787 7.04 575 4.35 475 0.84 1968 5.95 1058 7.84 709 15.23
48 2021-12-04 4768 5.77 668 3.29 355 1.13 2055 3.94 960 7.60 723 13.14
49 2021-12-11 5520 3.97 684 1.02 317 0.63 2722 2.94 1063 7.34 733 7.09
50 2021-12-18 5852 3.23 677 2.51 356 1.69 3058 1.60 1020 6.18 741 7.29
51 2021-12-25 5476 3.01 311 0.64 383 3.39 3031 1.55 997 6.12 751 5.59
52 2022-01-01 5124 2.13 132 1.52 287 0.35 2746 0.87 1198 3.92 760 4.61
1 2022-01-08 5049 1.84 59 1.69 228 1.32 2757 0.62 1439 2.64 558 5.91
2 2022-01-15 5216 1.19 66 3.03 776 0.26 2166 0.32 1609 1.55 597 4.36
3 2022-01-22 4459 0.76 202 0.50 196 1.02 1892 0.26 1414 1.27 753 1.06
4 2022-01-29 4392 0.64 144 1.39 208 0.48 1846 0.27 1426 0.84 766 1.04
5 2022-02-05 3959 0.48 193 1.04 169 0.00 1623 0.12 1255 0.32 715 1.54
6 2022-02-12 3514 0.51 188 0.53 214 0.00 1486 0.20 972 0.51 651 1.38
7 2022-02-19 3163 0.44 233 0.00 166 0.60 1397 0.29 806 0.74 557 0.54
8 2022-02-26 3003 0.73 253 0.00 175 1.14 1262 0.16 732 1.09 579 1.73
9 2022-03-05 3180 0.60 206 0.49 190 1.05 1349 0.15 908 0.66 523 1.53
10 2022-03-12 3104 0.68 243 0.00 195 2.05 1266 0.16 863 0.58 531 1.69
11 2022-03-19 3039 0.66 245 0.82 245 0.41 1187 0.25 902 1.00 460 1.09
12 2022-03-19 3251 1.05 205 1.46 258 1.16 1288 0.78 914 0.55 580 2.24
13 2022-04-02 3446 1.39 227 1.32 251 3.59 1363 0.37 1026 1.27 577 3.12
14 2022-04-09 3646 1.18 196 1.53 332 3.01 1286 0.31 1282 1.64 544 0.92
15 2022-04-16 3858 1.35 206 1.46 419 3.10 1229 0.49 1309 1.99 694 0.58
16 2022-04-23 3829 2.19 277 0.36 273 6.59 1244 1.05 1370 2.48 660 2.58
17 2022-04-30 4429 1.72 102 3.92 630 1.27 1496 1.00 1428 2.17 769 2.34
18 2022-05-07 4331 1.75 91 10.99 708 2.12 1401 0.71 1390 2.09 739 1.62

Positive adenovirus (ADV) tests

Figure 6: Positive adenovirus (ADV) tests (%) in Canada by region by surveillance week
Figure 6
Figure 6: 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 2021-09-04 2629 1.18 573 1.05 137 4.38 857 1.52 739 0.54 315 0.32
36 2021-09-11 2882 1.15 653 0.61 147 4.76 805 1.61 955 0.63 317 0.95
37 2021-09-18 3469 0.81 980 0.51 138 0.00 1101 1.45 858 0.23 386 1.04
38 2021-09-25 3780 0.82 1083 0.46 219 2.28 1113 0.54 857 0.47 506 2.17
39 2021-10-02 4051 1.14 1071 0.28 232 3.45 1461 1.37 765 1.18 517 1.16
40 2021-10-09 3822 1.31 721 0.14 314 1.91 1542 1.95 717 1.67 524 0.19
41 2021-10-16 3574 1.37 543 0.18 335 5.07 1461 1.57 725 0.97 510 0.20
42 2021-10-23 4018 2.54 628 0.00 455 11.87 1631 2.33 769 0.91 531 0.56
43 2021-10-30 4187 1.15 836 0.12 417 3.12 1541 1.56 778 1.03 608 0.33
44 2021-11-06 3942 1.42 415 0.96 293 1.02 1690 1.60 835 1.44 708 1.41
45 2021-11-13 4480 1.61 705 0.71 317 6.62 1772 1.47 864 1.04 819 1.22
46 2021-11-20 4421 2.51 598 0.50 356 7.30 1735 2.25 975 2.05 756 3.04
47 2021-11-27 4693 1.94 576 0.69 380 3.68 1968 2.69 1058 0.76 709 1.69
48 2021-12-04 4816 1.89 668 0.75 403 4.71 2055 1.95 960 1.46 723 1.80
49 2021-12-11 5614 2.48 684 0.88 411 4.87 2722 3.23 1063 1.03 733 1.91
50 2021-12-18 5999 2.72 677 0.74 503 6.56 3058 2.88 1020 1.67 741 2.70
51 2021-12-25 5474 2.54 314 1.59 378 7.41 3031 2.18 997 1.20 751 3.73
52 2022-01-01 5163 1.92 133 3.76 324 5.56 2747 1.49 1198 1.25 760 2.63
1 2022-01-08 5163 1.84 105 3.81 296 7.43 2757 1.38 1439 0.83 558 3.41
2 2022-01-15 4761 1.13 66 1.52 320 2.19 2167 0.51 1609 1.24 597 2.51
3 2022-01-22 4494 1.34 200 0.50 234 5.98 1892 1.16 1413 0.71 753 1.73
4 2022-01-29 4497 1.18 144 0.69 313 3.19 1846 1.14 1426 0.56 766 1.70
5 2022-02-05 3959 1.57 193 3.63 169 6.51 1623 1.42 1255 0.72 715 1.68
6 2022-02-12 3539 1.44 188 1.60 239 5.02 1486 1.14 972 0.62 651 2.00
7 2022-02-19 3163 1.52 233 2.58 166 7.83 1397 0.72 806 0.99 557 1.97
8 2022-02-26 3035 1.85 254 1.97 205 8.29 1263 0.87 732 1.78 579 1.73
9 2022-03-05 3206 1.90 207 1.93 215 7.44 1349 1.26 908 1.10 523 2.68
10 2022-03-12 3138 1.98 243 0.41 229 7.86 1266 1.11 863 1.74 531 2.64
11 2022-03-19 3039 1.88 245 1.63 245 4.90 1187 0.84 902 2.33 460 2.17
12 2022-03-26 3283 1.71 205 0.49 290 3.45 1288 1.40 914 1.97 580 1.55
13 2022-04-02 3486 2.29 227 0.44 291 8.93 1363 1.10 1026 1.95 577 3.12
14 2022-04-09 3686 1.74 196 1.53 372 4.84 1286 1.24 1282 1.17 544 2.21
15 2022-04-16 3922 1.71 206 2.43 483 2.48 1229 1.30 1309 1.38 694 2.31
16 2022-04-23 3920 1.84 277 1.08 364 4.95 1244 1.21 1370 1.39 660 2.58
17 2022-04-30 4652 1.53 102 1.96 852 2.82 1496 0.80 1429 1.26 769 1.82
18 2022-05-07 4590 1.72 91 3.30 967 2.79 1401 1.36 1390 1.15 739 1.89

Positive human metapneumovirus (HMPV) tests

Figure 7: Positive human metapneumovirus (HMPV) tests (%) in Canada by region by surveillance week
Figure 7
Figure 7: 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 2021-09-04 2665 0.23 580 0.00 138 2.17 832 0.36 792 0.00 315 0.00
36 2021-09-11 2935 0.24 653 0.00 149 0.67 796 0.50 1015 0.20 317 0.00
37 2021-09-18 3488 0.17 978 0.00 138 1.45 1073 0.19 907 0.11 386 0.26
38 2021-09-25 3810 0.37 1083 0.00 219 1.83 1086 0.74 914 0.00 506 0.40
39 2021-10-02 4057 0.17 1070 0.00 232 0.86 1428 0.21 809 0.00 513 0.39
40 2021-10-09 3769 0.16 721 0.00 238 1.26 1503 0.20 779 0.00 524 0.00
41 2021-10-16 3495 0.20 543 0.18 229 0.87 1436 0.07 777 0.00 510 0.59
42 2021-10-23 3877 0.15 628 0.00 276 0.36 1611 0.12 827 0.00 531 0.56
43 2021-10-30 4115 0.36 836 0.00 313 3.51 1510 0.13 841 0.24 608 0.00
44 2021-11-06 3903 0.77 415 0.00 210 6.19 1663 0.24 906 0.33 708 1.41
45 2021-11-13 4537 0.64 705 0.14 325 4.92 1742 0.17 943 0.21 819 0.85
46 2021-11-20 4435 0.99 597 0.17 349 8.02 1704 0.35 1028 0.49 756 0.53
47 2021-11-27 4739 1.01 575 0.52 380 8.68 1968 0.46 1105 0.00 709 0.42
48 2021-12-04 4875 1.48 668 0.45 403 12.90 2055 0.44 1019 0.29 723 0.69
49 2021-12-11 5658 1.22 684 0.88 411 9.98 2721 0.55 1108 0.54 733 0.14
50 2021-12-18 5920 1.08 677 0.30 397 11.08 3057 0.46 1048 0.38 741 0.00
51 2021-12-25 5508 1.20 311 2.89 378 12.17 3031 0.13 1034 0.29 751 0.53
52 2022-01-01 5190 1.00 132 1.52 321 10.28 2746 0.36 1230 0.16 760 0.66
1 2022-01-08 5173 0.72 101 1.98 295 8.14 2757 0.07 1454 0.21 558 1.08
2 2022-01-15 4797 0.38 66 4.55 320 0.94 2166 0.14 1646 0.43 597 0.34
3 2022-01-22 4500 0.24 202 0.00 227 3.08 1890 0.00 1426 0.21 753 0.13
4 2022-01-29 4429 0.23 144 1.39 228 1.32 1846 0.16 1443 0.14 766 0.00
5 2022-02-05 4038 0.25 193 2.07 233 0.86 1623 0.12 1270 0.08 715 0.14
6 2022-02-12 3549 0.42 188 2.13 239 2.51 1486 0.07 982 0.20 651 0.31
7 2022-02-19 3179 0.44 233 0.86 166 4.22 1397 0.00 822 0.61 557 0.00
8 2022-02-26 3038 0.53 253 0.79 205 3.41 1259 0.08 740 0.68 579 0.17
9 2022-03-05 3233 0.40 206 0.00 235 2.13 1348 0.07 917 0.65 523 0.19
10 2022-03-12 3152 0.51 243 0.41 230 1.74 1266 0.24 876 0.80 531 0.19
11 2022-03-19 3048 0.59 245 1.22 245 1.63 1186 0.00 912 0.66 460 1.09
12 2022-03-26 3367 0.77 205 1.46 367 1.09 1287 0.23 922 1.08 580 1.03
13 2022-04-02 3506 1.28 227 2.20 291 1.72 1363 0.95 1046 1.53 577 1.04
14 2022-04-09 3731 1.45 196 3.57 372 1.88 1285 1.25 1328 1.66 544 0.37
15 2022-04-16 3952 1.52 206 1.46 483 1.86 1225 1.71 1343 1.49 694 1.01
16 2022-04-23 3938 2.18 277 2.17 363 2.20 1237 1.70 1396 2.72 660 1.97
17 2022-04-30 4711 2.74 102 17.65 857 1.75 1496 1.87 1483 3.24 769 2.60
18 2022-05-07 4621 3.09 91 15.38 967 1.03 1401 3.43 1421 3.31 739 3.25

Positive enterovirus/rhinovirus (EV/RV) tests

Figure 8: Positive enterovirus/rhinovirus (EV/RV) tests (%) in Canada by region by surveillance week
Figure 8
Figure 8: 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 2021-09-04 2535 21.97 580 21.21 N.A. N.A. 857 26.49 739 21.52 311 14.15
36 2021-09-11 2745 18.62 653 15.62 N.A. N.A. 805 21.24 955 18.74 311 18.01
37 2021-09-18 3336 27.46 978 33.44 N.A. N.A. 1104 27.72 858 22.26 378 23.02
38 2021-09-25 3558 33.16 1083 43.40 N.A. N.A. 1113 31.63 857 25.20 497 27.97
39 2021-10-02 3821 30.02 1070 32.52 N.A. N.A. 1461 32.44 765 21.31 513 30.99
40 2021-10-09 3506 26.24 721 17.48 N.A. N.A. 1542 33.01 717 23.85 515 21.75
41 2021-10-16 3243 22.91 543 16.21 N.A. N.A. 1461 27.24 725 15.17 502 28.88
42 2021-10-23 3555 22.17 628 11.78 N.A. N.A. 1631 25.32 769 21.98 515 25.05
43 2021-10-30 3712 19.64 836 7.06 N.A. N.A. 1540 24.68 778 19.15 539 25.97
44 2021-11-06 3624 21.44 415 16.39 N.A. N.A. 1675 23.28 835 17.96 689 24.38
45 2021-11-13 4161 22.40 709 12.83 N.A. N.A. 1766 27.18 864 21.06 812 21.55
46 2021-11-20 4067 21.37 597 13.57 N.A. N.A. 1735 23.34 975 21.85 743 22.21
47 2021-11-27 4290 18.53 575 11.83 N.A. N.A. 1951 21.78 1058 16.07 694 18.88
48 2021-12-04 4431 16.61 668 10.93 N.A. N.A. 2053 18.56 960 15.31 708 17.23
49 2021-12-11 5206 14.56 684 11.11 N.A. N.A. 2713 14.19 1063 14.77 716 18.30
50 2021-12-18 5522 12.39 677 7.68 N.A. N.A. 3058 10.99 1020 13.24 734 20.57
51 2021-12-25 5104 9.95 311 9.00 N.A. N.A. 3031 7.06 997 12.04 733 18.55
52 2022-01-01 4854 7.70 132 11.36 N.A. N.A. 2746 5.39 1198 9.93 747 11.91
1 2022-01-08 4902 5.71 104 6.73 N.A. N.A. 2757 2.76 1439 7.23 544 15.26
2 2022-01-15 4472 3.98 66 1.52 N.A. N.A. 2166 1.85 1609 4.54 588 10.37
3 2022-01-22 4275 3.11 202 2.97 N.A. N.A. 1892 1.48 1413 4.18 732 5.19
4 2022-01-29 4204 2.59 144 1.39 N.A. N.A. 1846 1.08 1426 3.44 753 5.05
5 2022-02-05 3814 3.02 193 1.55 N.A. N.A. 1623 1.79 1255 4.46 700 3.71
6 2022-02-12 3317 3.86 188 1.06 N.A. N.A. 1486 2.49 972 4.63 645 6.82
7 2022-02-19 3015 4.44 233 0.43 N.A. N.A. 1397 3.08 806 3.85 553 10.13
8 2022-02-26 2841 6.30 253 1.98 N.A. N.A. 1262 5.07 732 6.56 571 10.51
9 2022-03-05 3002 7.76 206 6.80 N.A. N.A. 1349 6.15 908 7.82 514 12.45
10 2022-03-12 2926 8.20 243 5.35 N.A. N.A. 1266 6.08 863 9.04 523 13.38
11 2022-03-19 2822 8.93 245 7.35 N.A. N.A. 1187 7.67 902 9.76 452 12.17
12 2022-03-26 3052 9.47 205 3.41 N.A. N.A. 1288 6.75 914 11.71 572 14.51
13 2022-04-02 3246 8.44 227 9.25 N.A. N.A. 1363 7.34 1026 8.87 562 10.68
14 2022-04-09 3367 9.21 196 8.16 N.A. N.A. 1286 7.54 1282 10.53 530 10.57
15 2022-04-16 3461 9.10 206 12.62 N.A. N.A. 1229 6.35 1309 8.40 682 14.52
16 2022-04-23 3596 8.15 277 7.94 N.A. N.A. 1244 6.19 1370 7.66 645 12.40
17 2022-04-30 3878 8.07 102 15.69 N.A. N.A. 1496 7.49 1429 7.63 757 8.59
18 2022-05-07 3733 8.22 91 21.98 N.A. N.A. 1401 6.85 1390 7.77 731 10.67

Positive human coronavirus (HCoV) tests

Figure 9: Positive human coronavirus (HCoV) tests (%) in Canada by region by surveillance week
Figure 9
Figure 9: 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 2021-09-04 1992 1.05 98 0.00 138 0.00 645 1.71 792 1.01 311 0.64
36 2021-09-11 2262 0.62 202 0.00 149 0.00 584 1.03 1015 0.69 307 0.33
37 2021-09-18 2477 0.44 247 0.40 131 0.00 809 0.49 906 0.55 378 0.26
38 2021-09-25 2552 0.67 130 0.00 221 0.00 788 1.14 914 0.88 497 0.00
39 2021-10-02 2721 0.62 120 0.00 232 0.43 1042 0.38 809 1.48 513 0.00
40 2021-10-09 2986 0.57 332 0.30 238 0.00 1118 0.81 779 0.77 515 0.19
41 2021-10-16 2844 1.69 250 1.60 335 0.90 1032 1.55 725 2.90 502 0.80
42 2021-10-23 3351 1.07 353 0.28 453 0.22 1200 1.33 827 1.81 515 0.58
43 2021-10-30 3332 1.05 601 0.67 313 0.64 1042 1.34 778 1.80 593 0.17
44 2021-11-06 3029 2.21 154 3.90 210 2.38 1069 1.87 906 3.64 689 0.44
45 2021-11-13 3464 2.54 326 0.92 317 0.32 1142 2.19 864 6.71 812 0.12
46 2021-11-20 3478 3.05 310 2.90 349 0.86 1047 2.77 1028 4.96 743 1.88
47 2021-11-27 3898 3.93 305 3.61 475 1.47 1317 3.80 1105 6.88 694 1.30
48 2021-12-04 3792 4.96 368 4.89 465 1.94 1225 4.90 1019 8.93 708 1.41
49 2021-12-11 3830 6.58 369 5.42 356 1.97 1281 7.18 1108 11.01 715 1.54
50 2021-12-18 3815 7.29 356 6.18 496 3.02 1181 9.31 1048 10.21 734 3.27
51 2021-12-25 3131 8.18 69 10.14 378 2.91 914 10.83 1034 10.15 733 4.64
52 2022-01-01 3204 10.36 124 14.52 320 2.50 782 14.58 1230 11.63 747 6.56
1 2022-01-08 3367 9.27 99 4.04 296 8.45 966 10.87 1454 9.42 544 7.54
2 2022-01-15 3364 7.49 59 3.39 412 1.21 657 11.26 1646 8.81 588 4.42
3 2022-01-22 3100 4.97 186 1.08 226 2.65 529 6.43 1425 6.32 732 3.01
4 2022-01-29 3211 3.92 108 0.00 312 3.21 593 6.24 1443 4.92 753 1.06
5 2022-02-05 2755 2.83 68 1.47 233 2.15 480 3.33 1270 3.15 700 2.29
6 2022-02-12 2329 3.01 84 0.00 239 1.26 376 3.72 982 3.67 645 2.64
7 2022-02-19 2037 3.24 100 0.00 201 1.00 357 3.64 822 4.38 553 2.71
8 2022-02-26 1962 3.67 124 0.81 194 2.06 331 4.83 740 2.16 571 6.13
9 2022-03-05 2136 3.32 106 0.94 208 0.48 387 6.72 917 2.29 514 4.28
10 2022-03-12 2148 3.86 104 0.96 274 1.09 365 4.93 876 2.97 523 6.69
11 2022-03-19 2064 3.25 104 2.88 275 0.73 321 5.30 912 2.85 452 4.20
12 2022-03-26 2376 4.38 83 1.20 363 1.93 431 5.57 922 3.15 571 7.36
13 2022-04-02 2471 4.45 83 1.20 328 2.13 450 5.78 1046 2.68 562 8.54
14 2022-04-09 2733 4.24 83 6.02 318 4.09 468 3.85 1328 3.39 530 6.60
15 2022-04-16 3079 5.00 105 6.67 465 3.44 484 6.40 1342 2.83 682 9.09
16 2022-04-23 3156 4.91 197 2.03 327 6.73 586 5.97 1396 3.08 645 7.91
17 2022-04-30 3788 4.91 102 4.90 723 5.26 720 5.83 1482 2.56 757 8.32
18 2022-05-07 3710 4.80 91 4.40 801 3.87 664 8.13 1421 2.39 731 7.52

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