Weekly Influenza Respiratory Illness Activity Report
Weekly Influenza & Respiratory Illness Activity Report
Week Ending Feb. 18, 2023 | 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
1.3%
Hospitalizations
3,239
Most common strain
Influenza A/H3
School outbreaks
998
Long-term care outbreaks
99
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 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
2017-2018
2018-2019
2019-202020
2021-2022
2022-2023
40
Type
1
Hospitalized Influenza Surveillance 4
1
1
40
3.0
2.0
0.0
2.0
6.0
5
3
2
41
4.0
5.0
1.0
0.0
11.0
Type
1
7
5
1
42
11.0
6.0
1.0
3.0
14.0
43
8.0
8.0
1.0
3.0
45.0
43
1
35
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
44
5.0
7.0
1.0
0.0
121.0
or44 RT-P1CR) and specimens10f4rom h15ospitalized patients with a1 cute respiratory illness submitted to MDH-PHL by hospitals and laboratories. Due to the need to
4c5 onfirm1 reports and report233ing de41lays, co4 nsider current week data preliminary. 45 7.0
12.0
2.0
2.0
279.0
45
1
232
84
6
46
2.0
22.0
3.0
2.0
323.0
Sum of Frequency Number of hospitalizaons
47
3
48
2
49
4
700
50
2
51
600
52
2
1
5001
2
1
400
3
1
4
3002
5
6
2001
1 Hospital39i2 zed I1n63 fluen7 za Cases by Type, Mi42n2 neso141ta (Fl9 uSurv-NET*)
1
297
87
12
1
207
67
13
136
17
1
138
25
3
64
7
3
38
5
25
1
3
16
1
12
4
6
2
1
47
7.0
48
10.0
49
13.0
50
8.0
600
51
18.0
52
50.0
1
50052.0
2
55.0
3
40051.0
4
99.0
5
300138.0
6
130.0
7
200155.0
H25.o0 spitalize5.0d Influen1.0za Cases by566.0 Season,
51.0
Min1.0nesota (F12l.0uSurv-NE574.T0 *)
46.0
1.0
28.0
402.0
66.0
0.0
51.0
289.0
110.0
0.0
105.0
154.0
194.0
2.0
129.0
168.0
247.0
2.0
98.0
75.0
184.0
1.0
53.0
44.0
203.0
4.0
35.0
30.0
237.0
0.0
23.0
19.0
228.0
5.0
21.0
16.0
361.0
1.0
13.0
10.0
372.0
1.0
19.0
11.0
7
2
100
8
7
1
1
8
228.0
446.0
0.0
8.0
9
100193.0
422.0
1.0
22.0
9
0
40 41 42 43 44 45 46 47 48 49 50 51 52 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
10
MMWR Week
11 B (no genotype) B (Yamagata)
12 B (Victoria)
A (not subtyped) A H3 A (H1N1) pdm09
A (H1N2v) A (H3N2v) A & B
Unknown
13
10
257.0
368.0
1.0
20.0
11
0236.0
244.0
0.0
26.0
40 41 42 43 44 45 46 47 48 49 50 51 52 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
12
189.0
104.0
0.0
30.0
MMWR Week
13
1826.0022-2023
34.0 2021-2022
0.0 2020-2021 21.0 2019-2020
2018-2019
2017-2018
14
136.0
8.0
1.0
14.0
Hospitalizations this week Hospitalizations last week Total hospitalizations (to date)
Season 15
93.0
4.0
T0o.0 tal hospitali2z5.0ations (historic)
14
11
11
15
16
17
18
19
*FluSurv-NET = Influenza Surveillance Network
20
3,239
16 2017-512.0 018
3.0
17 2018-552.0 019
2.0
18 2019-282.0 020
0.0
19 2020-282.0 021
1.0
20 2021-162.0 022
0.0
2022-2023 (to date)
60,.0446
36.0
20,.0543
35.0
40,.0022
34.0
350.0
21.0
901 0.0
7.0
3,239 (to date)
Minnesota Department of Health Weekly Influenza & Respiratory Activity Report for Week Ending Feb. 18, 2023 | WEEK 7
Page 2
Number of hospitalizaons Hospitalizaons per 100,000 persons
Number of hospitalizaons Incidence rate
Hospitalized Influenza Surveillance (continued)
Number of Influenza Hospitalizations and Incidence by Region, Minnesota
Number of Influenza Hospitalizations and Incidence by Age, Minnesota
2000 1800
1600
Region
1400# of hospitalizations
Incidence (cases) per 100,000 Persons
Central
1204046.0
57.2
Metro
1,946.0
62.2
1000
Northeast
200.0
61.8
Northwest
80802.0
51.4
South Central
600112.0 57.2 38.3
Southeast
239.0
46.6
400
Southwest
75.0
35.0
West Central
200139.0
56.9
Total
0327
5.80
Central
62.2 Metro
Number of hospitalizaons
200 180
160
140
120
100
80
61.8
51.4
46.6
56.9 60
40
38.3
35.0
20
Northeast
Northwest South Central Southeast
0 Southwest West Central
Region Incidence (cases) per 100,000 persons
2000 1800
1600
Age
# of hospitalizations Incidence (cases) per
100,000 Persons
1400
0-4
292.0
84.4
5-24
1203083.0
26.4
25-49
430.0
1000
50-64
524.0
800
65+
1,610.0
Case Total
603027
23.6
844.84.0
169.7 5.78
400
200
0 0-4
Number of hospitalizaons
48.0
26.4
23.6
5-24
25-49
50-64
Age group (years)
Incidence (cases) per 100,000 persons
200
169.7
180
160
140
120
100
80
60
40
20
0 65+
Region Central
Hospitalizations Total
this week
(to date)
2
446
% Hospitalizations this week
18%
% Total (to date)
14%
Median age (years) at time of admission 64
Metro
7
1946
64%
60%
Northeast
0
200
0%
6%
Northwest
0
82
0%
3%
South Central 2
112
18%
3%
Southeast
0
239
0%
7%
Southwest
0
75
0%
2%
West Central 0
139
0%
4%
Minnesota Department of Health Weekly Influenza & Respiratory Activity Report for Week Ending Feb. 18, 2023 | WEEK 7
Page 3
Week
2022-2023
2021-2022
2020-2021
2019-2020
2018-2019
2017-2018
1.00
1
0.00
0
1.00
Influenza-Associated 0.00
0.00
1.00
0.00
Death
Surveillance
0.00
0.00
0.00
0.00
0.00
0.00
0
0.00
0.00
0.00
0.00
0.00
1.00
0
1.00
0.00
1.00
0.00
1.00
Influenza deaths are collected via reports from Minnesota's death certificate database, hospitals, and long-term care facilities. Decedents with influenza listed
0.00
3
0.00
0.00
0.00
0.00
1.00
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
are 0.00 reporte3d to influen0.0z0 a surveilla1.0n0 ce. Due to0.00 the need0.0t0 o confirm2.0r0eports and reporting delays, consider current week data preliminary.
0.00
6
0.00
0.00
1.00
0.00
1.00
1.00
0.00
2.00
50
2.00
2.00
45
12
Deaths
Associated 1.00
0.00
with
Infl0.0u0 enza
by0.0S0 eason,
1.00
11
0.00
Minnesota 0.00
1.00
1.00
3.00
18
2.00
0.00
1.00
1.00
8.00
26
2.00
0.00
4.00
0.00
7.00
11
2.00
0.00
3.00
3.00
23.00
6.00
40
9
6.00
8
35
3.00
7
9.00
30
4
6.00
0.00
3.00
3.00
25.00
6.00
3.00
10.00
2.00
48.00
3.00
1.00
11.00
1.00
49.00
9.00
0.00
4.00
3.00
50.00
Number of deaths
1.00
25
4
5.00
2
20
3.00
2
15
3.00
0
0.00
10
1.00
1.00
8.00
3.00
42.00
5.00
1.00
8.00
4.00
35.00
3.00
0.00
9.00
6.00
27.00
3.00
0.00
12.00
8.00
17.00
0.00
0.00
15.00
8.00
33.00
0.00
5
0.00
0.00
23.00
3.00
16.00
0.00
0.00
0.00
20.00
18.00
5.00
0
1.00
40 41 42 43 44 45 46 471.00 48 49 50 51 520.00 1 2 3 4 5 6 21.00 7 8 9 10 11 15.00 12 13 14 15 1612.00 17 18 19 20
0.00
0.00
0.00 MMWR Week 15.00
14.00
6.00
1.00
2022-2023
2021-210.020 2
2020-20.000 21
2019-132.00020
20185.0-02019
2015.700-2018
Deaths Associated with Influenza by Age Group and Season,
Minnesota
0-17
18-49
50-64
65-79
80+
Season 0-17
250
2017-2018 6
2018-2019 1
2019-2020 3
2020-2021 0
2021-2022 2
2022-2023 0
18-49
10
9
15
2
5
8
200
50-64
37
16
31
1
6
21
65-79
101
33
51
1
150
80+
281
36
53
3
18
42
23
80
Number of deaths
100
50 0
2017-2018
2018-2019
Top: Age group (years) Boom: Season
2019-2020
2020-2021
2021-2022
2022-2023
2017-2018 2018-2019 2019-2020 2020-2021 2021-2022 2022-2023 2017-2018 2018-2019 2019-2020 2020-2021 2021-2022 2022-2023 2017-2018 2018-2019 2019-2020 2020-2021 2021-2022 2022-2023 2017-2018 2018-2019 2019-2020 2020-2021 2021-2022 2022-2023 2017-2018 2018-2019 2019-2020 2020-2021 2021-2022 2022-2023
1.00
1.00
0.00
Season
3.00
Total deaths (historic)
3.00
0.00
2017-2018
440
1.00
1.00
0.00
2018-2019
126
1.00
1.00
0.00
2019-2020
197
0.00
0.00
0.00
2020-2021
7
19
1.00
0.00
2021-2022
54
20
0.00
0.00
2022-2023 (to date) 151
*FluSurv-NET = Influenza Surveillance Network
4.00
8.00
12.00
Total pediatric ( ................
................
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