Weekly Influenza Respiratory Illness Activity Report

Weekly Influenza & Respiratory Illness Activity Report

Week Ending February 20, 2021 | WEEK 7

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

Percent of molecular laboratory tests positive

0.1%

Hospitalizations

35

Most common strain

Influenza B

School outbreaks

3

Long-term care outbreaks

5

Pediatric influenza-associated deaths

0

Contents

Hospitalized Influenza Surveillance.............................................................................................................2 Influenza-Associated Death Surveillance....................................................................................................4 Respiratory Disease Outbreak Surveillance: School Outbreaks..................................................................5 Respiratory Disease Outbreak Surveillance: LTC Outbreaks.......................................................................6 Sentinel Provider Surveillance (Outpatients)..............................................................................................7 Laboratory Surveillance ..............................................................................................................................8 Minnesota Influenza Incidence Surveillance Project (MIISP) ...................................................................10 Weekly U.S. Influenza Surveillance Report................................................................................................12

Minnesota Influenza Surveillance (health.state.mn.us/diseases/flu/stats/) Weekly U.S. Influenza Surveillance Report (flu/weekly/) World Health Organization (WHO) Surveillance (who.int/influenza/surveillance_monitoring/updates/en/) Neighboring states' influenza information:

Iowa: Iowa Flu Reports (idph.influenza/reports) Wisconsin: Influenza (Flu) (municable/influenza/) North Dakota: Reported Seasonal Influenza Activity in North Dakota (default.aspx) South Dakota: South Dakota Influenza Information (doh.diseases/infectious/flu/)

Due to the COVID-19 pandemic, CDC and MDH will not be posting the weekly geographic spread indicators (no activity, sporadic, local, regional, widespread) this season as they rely on influenza-like illness data (ILI). Because these data are based on symptoms, the cause of ILI cannot reliably be attributed to influenza while COVID-19 is widely circulating.

Minnesota Department of Health 651-201-5414 or 1-877-676-5414 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

Hospitalized Influe3 nza 3Surv4eilla0nce 3 2 0

41

1

5

5

1

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

or44

RT-P1 CR)

and

specimens

from

hospitalized

patients

with

acute

respiratory

4

illness

4

submitted

to

4

MDH-PHL

by

7

hospitals

and

5

laboratories.

7

Due

to

the

1

need

to

4c5 onfirm1 reports and repor1ting delays, consider current week data preliminary. 4

4

2

13

7

14

2

46

2

1

3

3

6

20

2

24

3

47

3

Hospita2lized Influenza Cases by Type,

2

2 Hospit7 alized Inf43luenza Ca7 ses by Se30ason, 5

48

1

Minnesota (FluSurv-NET*)

2

2

10 Minneso54ta (FluSur10 v-NET*) 54

1

Number of Hospitalizations Number of Hospitalizations

49

1

50

51

1

50

52

1

1

53

2 45

1

1

40

2

4

3

1 35

4

3

2

5

1 30

6

1

25

7

1

8

20

9

15

10

B (no genotype) B (Yamagata) B (Victoria) A (not subtyped)

3

3

10

700

8

8

14

650

9

9

25

600

11

11

61

550

8

8

65

500

10

4510 0

68

87

13

123

9

246

18

557

51

631

52

584

55

49

1

2015-16

67

0

2016-17

115

1 2017-18

197

2 2018-19

254

2 2019-20

2020-21

193

1

A H3

11

4011 0

123

664

51

213

4

A H1 (unspecified)

20

3520 0

178

594

100

245

1

A (H1N1)pdm09 A (H1N2v) A (H3N2v) A&B Unknown

32

3032 0

222

479

139

236

5

48

2548 0

260

430

132

372

1

98

2098 0

Current week

371

393

159

380

1

150

162

162

390

359

228

461

1

100

213

213

265

242

197

430

50

263

263

248

166

260

377

0

191

191 40 42 44251 46 48 50140 52 1 3234 5 7 9248 11 13 15 17 19

105

105

264

106

MM19W3 R Week 104

11

10

12

13

5

Current week

14

0

15

41 43 45 47 49 51 53 2 4 6 8 10 12 14 16 18 20

16

Hospitalizations this week HospitalizatioMnsMlaWstRwWeeekek Total hospitalizations (to date)

17

1

1

35

18

*FluSurv-NET = Influenza Surveillance Network

119

119

59

59

Season

59

59

2015-2016

37

37

2016-2017

19

19

2017-2018

13

13

2018-2019

7

7

2019-2020

6

6

2020-2021

295

106

189

35

207

123

140

8

Total hospitalizations (historic)

152

91

92

5

1,538

83

53

51

3

3,695

45

45

56

2

6,446

25

42

28

0

2,543

23

19

28

2

4,022

10

9

11

0

35 (to date)

19

Minnesota Department of Health Weekly Influenza & Respiratory Activity Report for Week Ending February 20, 2021 | WEEK 7

20

Page 2

Hospitalized Influenza Surveillance (continued)

Number of Influenza Hospitalizations and Incidence by Region, Minnesota

Number of Influenza Hospitalizations and Incidence by Age, Minnesota

Hospitalizations per 100,000 Persons Hospitalizations per 100,000 Persons

Number of Hospitalizations

September 27, 2020 ? February 20, 2021

50 # of hospitalizations

45

Incidence (cases) per 100,000 Persons

Region

40# of hospitalizations

Incidence (cases) per 100,000 Persons

Central

354

0.52

Metro

21

0.67

30

Northeast

1

0.31

25

Northwest

0

0.00

20 South Central

4

2.51

2.5

Southeast

154

Southwest West Central Total

101

0

5 35

0

0.78

0.46

0.50.00

0.62

0.7

0.3 0.0

0.8 0.5

5.0

4.0

3.0

2.0

1.0 0.0

0.0

Central Metro Northeast Northwest South Central Southeast Southwest West Central

Region

Central Metro Northeast Northwest South Central Southeast Southwest West Central

Region

Hospitalizations this week 0 (0%) 1 (100%) 0 (0%) 0 (0%) 0 (0%) 0 (0%) 0 (0%) 0 (0%)

Total (to date) 4 (11%) 21 (60%) 1 (3%) 0 (0%) 4 (11%) 4 (11%) 1 (3%) 0 (0%)

Number of Hospitalizations

September 27, 2020 ? February 20, 2021

50

5.0

# of hospitalizations

45

Incidence (cases) per 100,000 Persons

Age

# of hospitalizations Incidence (cases) per

100,000 Persons

0-4

400

0.00

4.0

5-24

354

0.28

25-49

7

0.39

30

50-64

5

0.45

65+

2519

2.14

Case Total

35

0.62

20

3.0

2.1 2.0

15

10

5 0.0

0 0-4

0.3

0.4

0.5

5-24

25-49

50-64

Age Group (years)

1.0

0.0 65+

Median age (years) at time of admission 67

Minnesota Department of Health Weekly Influenza & Respiratory Activity Report for Week Ending February 20, 2021 | WEEK 7

Page 3

Week

2015-16

2016-17

2017-18

2018-19

2019-20

2020-21

40 0 0 In0fluen1 za-A0 ssoc0 iated Death Surveillance

41

0

0

0

0

0

0

42

0

0

0

0

0

0

43

1

0

0

0

1

0

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

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

4a5 re reporte1d to influen0 za surveilla2 nce. Due t0o the need0 to confirm1reports and reporting delays, consider current week data preliminary.

46

0

0

1

0

1

0

Number of Deaths Number of Deaths

47

0 Deaths A1 ssociated2 with Infl0 uenza by0 Season, 0

48

0

0

M1 innesota1

1

0

49

0

2

2

1

1

0

50

2015-16

50

0

2

9

0

3

0

2016-17

51

45 0

1

12

3

2

0

2017-18

52

1

1

12

2

3

0

40

2018-19

1

2

2

31

1

8

2

35

2019-20

2

1

2

49

1

10

1

2020-21

3

30 0

7

35

3

4

0

4

25 0

6

48

3

5

1

20

6

0

7

32

4

16

36

3

15

7

2

26

30

8

Current week

8

10 3

28

27

8

5

0

8

1

7

0

9

0

13

0

9

3

21

25

2

21

5

10

10

22

12

13

16

0

11

7

28

16

10

15

40 42 44 46 48 50 52 1 3 5 7 9 11 13 15 17 19

12

14

24

7

12

11

MMWR Week of Death

13

6

13

11

3

5

Deaths Associated with Influenza by Age Group and Season, Minnesota

300

Week

2015-16

2015-16

2016-17

2016-17 2017-18

2017-18

2018-19

2018-19

2019-20

2019-20

2020-21

2020-21

0-17

3

2

6

1

250

18-49

10

10

10

9

3

0

15

1

50-64

18

20

37

16

31

0

65-79

200 25

60

101

33

51

1

80+

20

181

281

36

53

3

150

100

50

0

0-17

18-49

50-64

65-79

80+

Age Group (years)

14

7

19

10

Season

Total deaths (historic)

15

4

16

9

2015-2016

76

16

6

12

5

2016-2017

273

17

5

6

4

2017-2018

440

18

0

4

2

2018-2019

95

19

1

4

2

2019-2020

153

20

0

0

2

2020-2021

5 (to date)

1

3

0

*FluSurv-NET = Influenza Surveillance Network

6

4

Total pediatric ( ................
................

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