Weekly Influenza & Respiratory Illness Activity Report Week Ending November 21, 2020 | WEEK 47
A summary of influenza surveillance indicators prepared by the Division of Infectious Disease Epidemiology Prevention & Control. All data are preliminary and may change as more information is received.
Minnesota Influenza Key Statistics Contents
Percent of molecular laboratory tests positive 0.1% Hospitalized Influenza Surveillance...... 2 Influenza-Associated Death Surveillance...... 4 Hospitalizations 12 Respiratory Disease Outbreak Surveillance: School Outbreaks...... 5 Most common strain Influenza B Respiratory Disease Outbreak Surveillance: LTC Outbreaks...... 6 Sentinel Provider Surveillance (Outpatients)...... 7 School outbreaks 3 Laboratory Surveillance ...... 8 Minnesota Influenza Incidence Surveillance Project (MIISP) ...... 10 Long-term care outbreaks 1 Weekly U.S. Influenza Surveillance Report...... 12 Pediatric influenza-associated deaths 0
Minnesota Influenza Surveillance (www.health.state.mn.us/diseases/flu/stats/) Weekly U.S. Influenza Surveillance Report (www.cdc.gov/flu/weekly/) World Health Organization (WHO) Surveillance (www.who.int/influenza/surveillance_monitoring/updates/en/) Due to the COVID-19 pandemic, CDC and MDH will not Neighboring states’ influenza information: be posting the weekly geographic spread indicators (no activity, sporadic, local, regional, widespread) this season Iowa: Iowa Flu Reports (idph.iowa.gov/influenza/reports) as they rely on influenza-like illness data (ILI). Because Wisconsin: Influenza (Flu) (www.dhs.wisconsin.gov/communicable/influenza/) these data are based on symptoms, the cause of ILI North Dakota: Reported Seasonal Influenza Activity in North Dakota (www.ndflu.com/default.aspx) cannot reliably be attributed to influenza while COVID-19 South Dakota: South Dakota Influenza Information (doh.sd.gov/diseases/infectious/flu/) is widely circulating.
Minnesota Department of Health 651-201-5414 or 1-877-676-5414 www.health.state.mn.us Week B (no genotype) B (Yamagata) B (Victoria) A (not subtyped) A H3 A H1 (unspecified) A (H1N1)pdm09 A (H1N2v) A (H3N2v) A&B Unknown Week 2015-16 2016-17 2017-18 2018-19 2019-20 2020-21
40 3 3 4 0 3 2 0
41 1 Hospitalized Influenza5 5 Surveillance1 4 4 5 1
42 1 1 1 2 6 11 6 1
43 1 3 3 4 10 8 8 1 Hospitalized influenza cases are based on disease reports of laboratory-positive influenza (via DFA, IFA, viral culture, EIA, rapid test, paired serological tests 4 4 4 7 5 7 1 or44 RT-PCR)1 and specimens from hospitalized patients with acute respiratory illness submitted to MDH-PHL by hospitals and laboratories. Due to the need to 4 4 2 13 7 14 2 confirm45 1 reports and reporting1 delays, consider current week data preliminary.
3 3 6 20 2 24 3 46 2 1
2 2 7 43 7 30 3 47 2 Hospitalized1 Influenza Cases by Type, Hospitalized Influenza Cases by Season, 2 2 10 54 10 54 48 Minnesota (FluSurv-NET*) Minnesota (FluSurv-NET*) 3 3 10 87 13 49 49 B (no genotype) 700 2015-16 50 8 8 14 123 9 67 B (Yamagata) 2016-17 50 650 B (Victoria) 9 9 25 246 18 115 2017-18 51 45 600 A (not subtyped) 11 11 61 557 51 197 2018-19 52 550 A H3 8 8 65 631 52 254 2019-20 500 1 40 A H1 (unspecified) 10 10 68 584 55 193 2020-21 450 2 A (H1N1)pdm09 11 11 123 664 51 213 35 400 3 A (H1N2v) 20 350 20 178 594 100 245 A (H3N2v) 4 30 32 300 32 222 479 139 236 A&B 5 48 250 48 260 430 132 372 Unknown 6 25 98 200 98 371 393 159 380
162 162 Current390 week 359 228 461 7 150 20 213 Number of Hospitalizations 100 213 265 242 197 430 8
263 50 263 248 166 260 377 Number of Hospitalizations 9 15 0 191 191 251 140 234 248 10 40 42 44 46 48 50 52 2 4 6 8 10 12 14 16 18 20 105 105 264 106 193 104 11 10 Current week MMWR Week 119 119 295 106 189 35
12
5 59 59 207 123 140 8 13 Season Total hospitalizations (historic) 59 59 152 91 92 5 14 0 2015-2016 1,538 37 37 83 53 51 3
15 40 42 44 46 48 50 52 2 4 6 8 10 12 14 16 18 20 2016-2017 3,695 19 19 45 45 56 2
16 2017-2018 6,446 MMWR Week 13 13 25 42 28 0
17 2018-2019 2,543 7 7 23 19 28 2
18 Hospitalizations this week Hospitalizations last week Total hospitalizations (to date) 2019-2020 4,022 6 6 10 9 11 0 3 3 12 2020-2021 12 (to date) 19 *FluSurv-NET = Influenza Surveillance Network
20 Minnesota Department of Health Weekly Influenza & Respiratory Activity Report for Week Ending November 21, 2020 | WEEK 47 Page 2 Hospitalized Influenza Surveillance (continued) Number of Influenza Hospitalizations and Incidence by Region, Number of Influenza Hospitalizations and Incidence by Age, Minnesota Minnesota September 27, 2020 – November 21, 2020 September 27, 2020 – November 21, 2020 50 5.0 50 5.0 # of hospitalizations # of hospitalizations
45 Hospitalizations100,000 Persons per Incidence (cases) per 100,000 Persons 45 Incidence (cases) per 100,000 Persons Hospitalizations100,000 Persons per 40 4.0 Age # of hospitalizations Incidence (cases) per 40 100,000 Persons 4.0 Region # of hospitalizations Incidence (cases) per 100,000 Persons 35 0-4 0 0.00 Central 2 0.26 35 5-24 1 0.07
Metro 306 0.19 3.0 25-49 301 0.06 3.0 Northeast 251 0.31 50-64 1 0.09
Northwest 0 0.00 25 20 2.0 65+ 9 1.01
South Central 1 0.63 15 Case Total 208 0.14 2.0
Southeast 1 0.20 Number of Hospitalizations Number of Hospitalizations 10 1.0 15 Southwest 1 0.46 0.6 0.5 1.0 0.3 0.2 0.3 West Central 50 0.00 0.2 10 1.0 0.0 0.0 Total 012 0.21 0.0 5 0.1 0.0 0.1 0.1 Metro Central 0 0.0 Southeast Northeast Southwest Northwest 0-4 5-24 25-49 50-64 65+ West Central Region South Central Age Group (years)
Hospitalizations this Total Region Median age (years) at time of admission week (to date) 78 Central 0 (0%) 2 (17%) Metro 2 (67%) 6 (50%) Northeast 0 (0%) 1 (8%) Northwest 0 (0%) 0 (0%) South Central 1 (33%) 1 (8%) Southeast 0 (0%) 1 (8%) Southwest 0 (0%) 1 (8%) West Central 0 (0%) 0 (0%)
Minnesota Department of Health Weekly Influenza & Respiratory Activity Report for Week Ending November 21, 2020 | WEEK 47 Page 3 Week 2015-16 2016-17 2017-18 2018-19 2019-20 2020-21
40 0 0 0 1 0
41 0 0 Influenza-Associated0 0 0 Death Surveillance
42 0 0 0 0 0
43 1 0 0 0 1 Influenza deaths are collected via reports from Minnesota’s death certificate database, hospitals, and long-term care facilities. Decedents with influenza listed 44 0 0 1 0 0 as a cause of or contributor to death, have recent laboratory confirmation of influenza, or are part of an ongoing influenza outbreak at a long-term care facility 45 1 0 2 0 0 are reported to influenza surveillance. Due to the need to confirm reports and reporting delays, consider current week data preliminary. 46 0 0 1 0 1
47 0 1 2 0 0 Deaths Associated with Influenza by Season, Deaths Associated with Influenza by Age Group and Season, 48 0 0 1 1 1 Minnesota Minnesota 49 0 2 2 1 1 2015-16 2015-16 2016-17 2017-18 2018-19 2019-20 2020-21 50 50 0 2 9 0 3 300 2016-17 Week 2015-16 2016-17 2017-18 2018-19 2019-20 2020-21 51 45 0 1 12 3 2 2017-18 0-17 3 2 6 1 3 52 1 1 12 2 3
18-49 250 10 10 10 9 15 40 2018-19 1 2 2 31 1 8 2019-20 50-64 18 20 37 16 31 2 35 1 2 49 1 10 2020-21 65-79 200 25 60 101 33 51 3 0 7 35 3 4
Deaths 30 80+ 20 181 281 36 53
4 0 6 48 3 5
25 Deaths 150 5 1 7 32 4 8
6 20 0 16 36 3 7 Number of 7 15 2 26 30 8 9 100 Number of 8 3 Current28 week 27 8 13 10 9 3 21 25 2 21 50
10 5 10 22 12 13 16
11 0 7 28 16 10 15 0 12 4014 42 44 4624 48 50 527 2 4 12 6 8 10 11 12 14 16 18 20 0-17 18-49 50-64 65-79 80+
13 6 13 MMWR11 Week3 of Death 5 Age Group (years)
14 7 19 10 6 4 Season Total deaths (historic) Total pediatric (<18 years) deaths (historic) Season Median age (years) at time of death 15 4 16 9 4 3 2015-2016 76 3 2015-2016 68 16 6 12 5 2 0 2016-2017 273 2 2016-2017 86 17 5 6 4 1 0 2017-2018 440 6 2017-2018 85 18 0 4 2 2 1 2018-2019 95 1 2018-2019 75 19 1 4 2 1 1 2019-2020 153 3 2019-2020 73 20 0 0 2 0 0
2020-2021 1 0 (to date)3 0 0 (to date) 2020-2021 - (to date) *FluSurv-NET = Influenza Surveillance Network Minnesota Department of Health Weekly Influenza & Respiratory Activity Report for Week Ending November 21, 2020 | WEEK 47 Page 4 Week 2016-17† 2017-18† 2018-19† 2019-20† 2020-21
40 1 0 1 1 0
41 Respiratory1 2 1 3 Disease0 Outbreak Surveillance: School Outbreaks
42 0 1 0 1 1
43 1 0 0 4 0 K-12 schools report an outbreak of influenza-like illness (ILI) when the number of students absent with ILI reaches 5% of total enrollment or three or more 44 1 2 2 0 0 students with ILI are absent from the same elementary classroom.
45 3 1 4 4 1
46 2 3 0 7 1
47 1 2 1 19 0 Influenza-like Illness (ILI) in Schools by Season
48 0 1 1 7 200 2016-17† 49 2 5 5 14
50 8 19 5 61 2017-18†
51 3 3 6 172 2018-19†
52 0 0 0 0 2019-20† 53 1501 3 0 5
1 2 5 0 9 2020-21
2 8 73 12 32
3 10 122 38 121
4 18 77 31 79 like Illness Outbreaks 5 20 103 8 91 - 100
6 53 109 16 79
7 41 66 38 66 Influenza 8 38 22 30 35
9 32 23 22 44 50 10 33 4 43 22 Current week 11 23 16 33 25 Number of
12 41 7 26 2
13 15 3 15 0
14 16 0 4 12 0
15 5 408 41 1042 430 44 45 46 47 48 49 50 51 52 53 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
16 4 8 2 0 MMWR Week
17 0 0 5 0 New school outbreaks this week New school outbreaks last week Total this season (to date) 18 2 1 6 0 † The Week 53 value for these seasons is the average of Week 52 and Week 1 0 1 3 19 1 3 6 0
20 0 0 4 0 Minnesota Department of Health Weekly Influenza & Respiratory Activity Report for Week Ending November 21, 2020 | WEEK 47 Page 5 Week 2016-17† 2017-18† 2018-19† 2019-20† 2020-21
40 0 0 0 0 0
41 Respiratory0 0 0 0 0 Disease Outbreak Surveillance: LTC Outbreaks
42 0 0 0 0 0
43 0 0 0 0 0 Long-Term Care (LTC) facilities report to MDH when they suspect an outbreak of influenza in their facility. Laboratory-confirmed outbreaks are reported here. 44 0 0 0 0 0
45 1 0 0 2 1
46 0 1 1 0 0 Confirmed Influenza Outbreaks in LTC by Season 47 1 0 0 1 0
48 400 5 0 1 2016-17†
49 1 3 0 2
50 2 3 0 0 2017-18† 35 51 1 1 0 2 2018-19† 52 2 18 1 0
53 303 21 1 3 2019-20†
1 3 23 0 6
2 6 36 0 6 25 2020-21
3 9 24 2 4
4 11 10 2 7
5 2012 13 6 9 confirmed outbreaks
6 11 13 5 7
7 1521 10 3 6
8 14 13 4 19
9 12 8 6 10
Number of lab - 10 10 11 3 5 11
11 11 4 7 8 Current week
12 75 9 4 4
13 10 4 3 0
14 12 6 2 0 0 15 6 401 41 042 431 44 45 46 47 48 49 50 51 52 53 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
16 7 0 2 0 MMWR Week 17 1 0 2 0
18 3 1 2 0
19 3 2 1 New LTC outbreacksI this week New LTCoutbreaks last week Total this season (to date)
†20 The Week2 53 value0 for these1 seasons is the average of Week 52 and Week 1 0 0 1
Minnesota Department of Health Weekly Influenza & Respiratory Activity Report for Week Ending November 21, 2020 | WEEK 47 Page 6 Week 2016-17† 2017-18† 2018-19† 2019-20† 2020-21 2020-21 MN Baseline‡
40 1.3 1.43 1.28562 2.42367 1.3 2.8
41 1.3 1.43 1.71591 Sentinel2.33836 1.8 2.8 Provider Surveillance (Outpatients)
42 1 1.42 1.39559 2.21124 1.4 2.8
43 1.6 1.24 1.53928 2.39513 0.8 2.8 MDH collaborates with healthcare providers who report the total number of patients seen and the total number of those patients presenting to outpatient clinics44 0.8with influenza-like1.37 2.24719 illness.2.40882 0.8 2.8
45 0.7 1.42 1.75836 2.27738 1 2.8
46 1 1.64 1.84595 2.43498 Percentage0.9 2.8 of Persons Presenting to Outpatient Clinics with Influenza-Like Illness (ILI)
47 1.2 1.66 2.20573 2.72668 0.7 2.8 12 2016-17† 48 1.6 1.47 2.08246 4.05946 2.8
49 1.13 2.15 1.89865 3.52987 2.8 2017-18†
50 1.1 2.3 2.67372 3.53594 2.8 2018-19† 10 51 1.93 2.94 2.58014 5.65083 2.8 2019-20†
52 3.1 3.64 3.40117 9.71059 2.8 2020-21
53 3.14 3.935 3.335695 7.450415 2.8 8 2020-21 MN Baseline‡ 1 3.18 4.23 3.27022 5.19024 2.8 like Illness like -
2 3.2 5.06 4.74847 2.86815 2.8
3 4.25 5.81 3.21409 3.1499 2.8 6 4 4.3 6.32 3.79504 4.12876 2.8
5 4.1 6.46 3.77994 4.15375 2.8 Current week* 6 5.24 6.73 3.25786 5.07172 2.8 4 7 5.334 5.69 3.4634 6.70982 2.8 Percent with Influenza 8 5.73 5.33 3.72245 4.64379 2.8
9 3.8 4.47 3.3982 4.59262 2.8 2 10 4.6 3.76 3.59236 4.49438 2.8
11 3.9 2.98 3.56018 5.30925 2.8
12 4.2 2.39 3.03359 3.75218 2.8 0 13 3.9 2.33 40 2.2860541 423.02364 43 44 45 2.8 46 47 48 49 50 51 52 53 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 14 4.1 1.66 2.41452 1.74459 2.8 MMWR Week
*15 Indicates3.5 current2.09 week-data2.2887 may1.95409 be delayed by 12.8 or more weeks † The Week 53 value for these seasons is the average of Week 52 and Week 1 ‡16 MN Baseline3.4 2.18valid for 2.149392020-21 1.42124season only, do not2.8 compare it with previous seasons. The baseline is
17 calculated3.2 by1.65 averaging2.45684 the ILI 2.2468percent for non-influenza2.8 weeks over the previous four seasons and adding two standard deviations. Non-influenza weeks account for less than 2% of the season’s total % of outpatients with ILI this week % of outpatients with ILI last week 18 flu-positive3.1 specimens1.76 2.15866 tested at2.23856 Public Health Labs2.8 in HHS Region 5. Weeks where ILI % is above baseline reflect weeks with excess health care visits due to ILI. 0.7% 0.9% 19 2.8 1.68 1.8928 2.8
20 2.8 1.4 2.31566 2.8 Minnesota Department of Health Weekly Influenza & Respiratory Activity Report for Week Ending November 21, 2020 | WEEK 47 Page 7 Week A (H1N1) pdm09 A H3 A (not subtyped) B 2016-17 % + by PCR 2017-18 % + by PCR 2018-19 % + by PCR 2019-20 % + by PCR 2020-21 % + by PCR A&B Unknown
40 0 0 0 0 1.93 0.25 0 0.13175 0
41 0 0 1 1 0 0.19 0.123 Laboratory0.34247 0.56 Surveillance
42 0 0 0 1 0.54 1.29 0.898 0.95238 0.3
43 0 0 0 0 0.87 0.78 0.6924 2.02899 0 The MN Lab System (MLS) Laboratory Influenza Surveillance Program is made up of more than 310 clinic- and hospital-based laboratories, voluntarily 44 0 0 1 0 0.48 1.74 1.139 1.37112 0.2 submitting testing data weekly. These laboratories perform rapid testing for influenza and Respiratory Syncytial Virus (RSV). Significantly fewer labs perform PCR45 testing0 for0 influenza0 and0 three0.83 also3.51 perform0.3525 PCR3.32577 testing0 for other respiratory viruses. MDH-PHL provides further characterization of submitted influenza isolates46 0 to determine0 0 the hemagglutinin1 1.6 4.82 serotype0.34404 to3.31263 indicate0.05 vaccine coverage. Tracking the laboratory results assists healthcare providers with patient diagnosis47 0 of influenza-like0 0 1 illness0.4 and provides6.33 0.47733 an indicator8.59206 0.06 of the progression of the influenza season as well as prevalence of disease in the community. 48 1.9 6.1 Specimens1.0506 9.92443 Positive for Influenza by Molecular Testing*, by Week 49 1.55 5.57 0.6435 11.6883 B A (not subtyped) A H3 A (H1N1) pdm09 2016-17 % + by PCR
50 30 2.1 10.63 2.00222 17.3616 50 2017-18 % + by PCR 2018-19 % + by PCR 2019-20 % + by PCR 2020-21 % + by PCR 51 3.27 22.19 3.8961 25.333 45 52 5.07 26.62 6.875 28.7995 25 53 5.8 25.2 6.8 26.77 40 Percent of Positive Molecular Tests Molecular Positive of Percent 1 6.56 23.73 6.89858 24.7537
2 9.44 26.08 8.645 23.8247 35 20 3 16.49 31.28 11.334 29.1924 30 4 17.06 29.73 15.812 28.5285
5 17.58 25.6 19.8343 31.3398 15 Current week 25 6 17.74 24.63 21.9485 33.0324
7 23.37 24.33 25.7567 35.9588 20 of Positive Molecular Tests Molecular of Positive
8 24.36 22.9 26.0141 34.1712 10 9 17.5 21.05 25.5621 35.4538 15
10 Number 19.6 19.38 26.7438 27.7136 10 11 5 22.12 17.45 23.9014 22.092
12 26.1 18.01 22.4066 9.28172 5
13 23.7 16.89 18.91 5.10657
14 0 21.3 17.11 19.2825 1.05079 0
15 40 41 42 43 4416.7 45 14.6346 47 10.507848 490 50 51 52 53 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
16 11.5 11.32 8.87902 0 MMWR Week
*17 Beginning in 2016-17, laboratories report6.5 results14.4 for rapid7.43062 molecular0 influenza tests in addition to RT-PCR results % of molecular tests positive this week % of molecular tests positive last week 18 4.1 11.96 5.54455 0 † The Week 53 value for these seasons is the average of Week 52 and Week 1 0.1% 0.1% 19 4.9 5.29 4.81348
20 3.3 5.38 4.41176 Minnesota Department of Health Weekly Influenza & Respiratory Activity Report for Week Ending November 21, 2020 | WEEK 47 Page 8 Region A/B+ A+ B+ †2015-16 %+ †2016-17 %+ †2017-18 %+ †2018-19 %+ †2019-20 %+ 2020-21 %+ Region Number + †2016-17 %+ †2017-18 %+ †2018-19 %+ †2019-20 %+ 2020-21%+ 40 0 0 0 0.97 2.03 0.36 Laboratory1.145 1.03448 0 Surveillance40 1 (continued)6.3 13.04 14.89 8.10811 9.1 41 0 0 4 1.95 0.72 2.2 0.715 2.32558 4 41 1 8.1 10 13.27 6.25 10
42 0 2 MLS1 Laboratories0.7 1.70 –2.03 Influenza2.916 2.21239Testing1.8 42 3 2.7 6.5 MLS 7Laboratories4.93827 15.8 – RSV Testing 43 Specimens0 0 Positive2 1.4by Influenza5.24 1.87 Rapid1.6344 Antigen1.8 1.2Test, by Week 43 Specimens3 8.5 Positive9.6 6.767 by 12.3711RSV Rapid13 Antigen Test, by Week
44 0 1 2 1 1.96 1.72 2.489 3.16742 1.1 A/B+ A+ B+ 44 1 12.1 9.3 20.408 2.08333 3.3 Number + 100 50 100 100 45 0 3 5 1.4 1.92 3.47 0.8658 4.68948 3.2 †2016-17 %+ †2017-18 %+ †2018-19 %+ 45 0 12.2 9.1 12.381 8.94309 0 †2016-17 %+ Percentage of Rapid 46 0 1 1 1.2 2.40 4.85 3.15501 6.01589 0.7 90 †2019-20 %+ 2020-21 %+ 45 46 900 17.1 25 19.6429 15.5844 0 †2017-18 %+ 90 Percentage of Rapid AntigenRSV TestsPositive
47 0 2 4 1.5 4.60 7.34 3.32 9.5373 3.4 47 0 25 24.1 22.27 28.1633 0 80 40 †2018-19 %+ 48 2.39 6.00 11.3 2.247 12.7993 80 80 48 26 29.49 29.787 23.7013 †2019-20 %+ 49 2.28 5.01 11.09 1.99336 15.2819 70 35 49 70 35.3 26.01 36.4 26.378 2020-21%+ 70 50 1.58 7.88 15.62 2.60869 23.7288 50 34.3 32.05 37.2881 25.1724
51 60 3.93 9.34 21.87 4.05872 28.4537 30 60 60 Antigen Influenza 51 30.74 40.51 35.0133 26.824
52 2.45 13.25 30.06 9.19143 31.1344 50 25 52 50 35.56 37.67 32.4009 29.1747 50
53 2.155 12.675 28.255 8.677865 29.40235 53 Current35 36.74week 34.13 30.1
1 40 1.86 12.10 26.45 8.1643 27.6703 20 40 40
1 34.41 35.81 35.8621 31.9404 2 Current week 2.9 13.38 28.99 13.4066 26.2082 30 15 2 30 35.9 31.3 37.844 24.5742 30 Tests Positive Tests
3 4.84 18.65 33.89 16.7612 31.2544 Number of PositiveRSV Tests 3 31.43 32.91 32.0833 26.2443
4 20 7.5 22.69 33.16 22.7335 33.0813 10 20 20
4 29.23 30.06 32.0366 20.1729 Number of PositiveInfluenza Specimens 5 11.6 24.27 32.39 25.4458 35.9291
10 5 5 10 26.61 32.11 25.5937 22.8261 10
6 15.3 26.96 27.1 24.9393 36.0528
6 25.71 30.43 30.4094 23.5474 7 0 26.3 30.81 29.75 28.238 36.8231 0 0 0 7 40 4226.53 44 26.6746 48 29.68350 5219.07361 3 5 7 9 11 13 15 17 19 8 40 42 44 46 48 27.350 5227.56 1 329.87 5 28.74957 9 34.209711 13 15 17 19
8 21.4 30.41 20.6997 21.1144 9 29.5 MMWR26.89 Week27.12 29.7446 35.0487 MMWR Week
9 26.87 22.48 18.3871 16.9675 10 30.7 29.90 22.43 31.5927 30.9389
Region % rapid antigen influenza tests + this week 10 Region 22.8 22.83 21.4925% rapid14.2857 antigen RSV tests + this week 11 26.9 30.28 21.94 33.8757 22.6124
Central 3% 11 Central 18.71 26.27 15.120% 8.81543 12 21.2 30.82 18.91 28.1729 13.6591
Metro 5% 12 Metro 19.39 8.73 16.666670% 10.2881 13 18.3 27.04 19.84 25.3886 4.07303
Northeast 0% 13 Northeast 12.4 11.86 17.9916- 4.8346 14 17.2 23.69 16.48 22.4849 1.88442
Northwest 0% 14 Northwest 10.8 16.03 11.5555- 2.05882 15 17.2 21.80 17.71 21.995 2.19178 South Central - 15 South Central 13.1 9.09 9.032260% 2.04082 16 14.5 18.10 17.2 14.9654 1.34771 Southeast 6% 16 Southeast 11 5.83 9.589040% 3.0303 17 10.4 10.74 16.79 14.9688 1.04167 Southwest 0% Southwest 0% 18 8.3 9.00 14.8 14.718 1.81818 17 10.1 7.35 3.4247 2.63158 West Central 0% West Central 0% 19 6.3 9.80 9.83 13.7681 18 4.5 4.11 8.4033 18.1818 Statewide (overall) 3% Statewide (overall) 0% 20 3.6 7.75 8.86 13.3891 19 7.9 8 2.89855 † The Week 53 value for these seasons is the average of Week 52 and Week 1
20 5.7 15 3.22581 Minnesota Department of Health Weekly Influenza & Respiratory Activity Report for Week Ending November 21, 2020 | WEEK 47 Page 9 Week COVID-positive Flu-positive RSV-positive Other-pathogen positive All tests negative
40 12 0 0 26 42
41 Minnesota9 0 0 24 45 Influenza Incidence Surveillance Project (MIISP)
42 8 0 0 26 42
43 19 0 0 19 42 MIISP surveillance sites collect 10-20 specimens every week on patients presenting with acute respiratory illness with or without fever. The graph below illustrate44 19 the 0number0 of positive20 41results by virus family detected each week. The primary purpose of these graphs is to visualize the respiratory viruses circulating45 19 in 0 Minnesota.0 0 39
46 16 0 0 0 32
47 7 0 0 0 22 MIISP Testing (Outpatient), by Week
48
49 90 COVID-positive Flu-positive RSV-positive Other-pathogen positive All tests negative 50
51 80 52
53
1 70
2
3 60 PCR - 4
5 50
6 Current week 7 40 8
9
10 30 Number Positiveby RT 11
12 20
13
14 10
15
16 0 17 40 41 42 43 44 45 46 47 48 49 50 51 52 53 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
18 MMWR Week 19
20 Minnesota Department of Health Weekly Influenza & Respiratory Activity Report for Week Ending November 21, 2020 | WEEK 47 Page 10 Minnesota Influenza Incidence Surveillance Project (continued) This table details the specific viruses detected during the 2020-21 Influenza season. Viruses are grouped by the virus family they belong to, with the exception of SARS-CoV-2 (the virus that causes COVID-19), which is singled out from the seasonal coronaviruses that regularly circulate throughout the year.
Pathogen Group Pathogen Frequency Percent of detections All Negative None 305 Adenovirus Adenovirus 2 1% Bocavirus Bocavirus 3 1% Influenza Flu A/H1/2009 0 0% Flu A/H1/seasonal 0 0% Flu A/H3 0 0% Flu A/Unknown 0 0% Flu A/Unsubtypeable 0 0% Flu B 0 0% Parainfluenza Parainfluenza-1 0 0% Parainfluenza-2 0 0% Parainfluenza-3 0 0% Parainfluenza-4 4 2% RSV/Metapneumovirus Metapneumovirus 5 2% RSV 0 0% Seasonal Coronavirus Coronavirus-229E 1 0% Coronavirus-HKU1 0 0% Coronavirus-NL63 1 0% Coronavirus-OC43 0 0% Rhinovirus/Enterovirus Enterovirus 0 0% Rhinovirus 0 0% Rhinovirus/Enterovirus (non-differentiated) 99 44% SARS-CoV-2 (COVID-19) SARS-CoV-2 109 49%
Minnesota Department of Health Weekly Influenza & Respiratory Activity Report for Week Ending November 21, 2020 | WEEK 47 Page 11 Weekly U.S. Influenza Surveillance Report
Week 46, ending November 14, 2020 Seasonal influenza activity in the United States remains lower than usual for this time of year. Flu activity is unusually low at this time but may increase in the coming months. An annual flu vaccine is the best way to protect against flu and its potentially serious complications. If you haven’t gotten your flu vaccine yet, get vaccinated now. There are also flu antiviral drugs that can be used to treat flu illness.
Outpatient Illness: ILINet Activity Map
This week, two jurisdictions experienced low ILI activity while the remaining jurisdictions experienced minimal activity. ILI activity levels may be impacted by the COVID-19 pandemic and should be interpreted with caution. CDC National Influenza Surveillance (http://www.cdc.gov/flu/weekly/)
Minnesota Department of Health Weekly Influenza & Respiratory Activity Report for Week Ending November 21, 2020 | WEEK 47 Page 12