Post on 09-Mar-2018
RESPIRATORY VIRUS SURVEILLANCE REPORT
Week Ending May 5, 2018
Wisconsin Department of Health Services | Division of Public Health
Bureau of Communicable Diseases | Communicable Diseases Epidemiology Section
https://www.dhs.wisconsin.gov/dph/bcd.htm | dhsdphbcd@dhs.wi.gov
Page 2
WISCONSIN DIVISION OF PUBLIC HEALTH RESPIRATORY VIRUS SURVEILLANCE REPORT WEEK ENDING MAY 5, 2018
STATE OF WISCONSIN REGION V OF US
(WI, MN, IL, MI, OH, IN)
UNITED STATES
ILI: BELOW BASELINE ILI: HIGH LEVELS ILI: MODERATE LEVELS
INFLUENZA-ASSOCIATED
PEDIATRIC DEATHS REPORTED:
INFLUENZA LIKE ILLNESS (ILI) ACTIVITY
For National US influenza surveillance statistics visit: http://www.cdc.gov/flu/weekly/
Week 18,
October 1, 2017
to present
Wisconsin 1 3
Nationwide 2 165
ILI: INSUFFICIENT DATA
AT-A-GLANCE:
Weekly Respiratory Report Description
Predominant Virus of the Week: Influenza B, followed by human
metapneumovirus and rhinovirus
CURRENT ALERTS:
Influenza B activity continues to be predominant
statewide and nationally. Influenza activity and the
number of reported outbreaks opf flu increased this
past week.
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WISCONSIN DIVISION OF PUBLIC HEALTH RESPIRATORY VIRUS SURVEILLANCE REPORT WEEK ENDING MAY 5, 2018
Wisconsin positive influenza results and subtypes by PCR
Cumulative number of positive influenza PCR tests by subtype September 3, 2017 to present
WISCONSIN LABORATORY SURVEILLANCE
FOR RESPIRATORY VIRUSES BY PCR
0%
10%
20%
30%
40%
50%
60%
0
200
400
600
800
1,000
1,200
1,400
1,600
1,800
2,000
2,200
9/2 9/30 10/28 11/25 12/23 1/20 2/17 3/17 4/14 5/12 6/9 7/7 8/4 9/1 9/29
% P
osi
tive
by
PC
R
Nu
mb
er
of
po
siti
ve d
ete
ctio
ns
Week ending
A (unknown subtype) A (H3N2 seasonal) A (H1N1) A (H3N2v)
B (unknown subtype) B (Victoria) B (Yamagata) Influenza % positive
73% 27%
A (2009 H1N1) A (H3N2) A (Unknown) B (Victoria) B (Yamagata) B (Unknown)
Total positive (n) 194 1873 12618 12 338 5015 20050
% of total positive 1% 9% 63% 0% 2% 25% 100%
Influenza A: Influenza B:Total
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WISCONSIN DIVISION OF PUBLIC HEALTH RESPIRATORY VIRUS SURVEILLANCE REPORT WEEK ENDING MAY 5, 2018
Trends in respiratory virus activity by PCR
WISCONSIN LABORATORY SURVEILLANCE FOR
RESPIRATORY VIRUSES BY PCR
Respiratory virus Tested Positive
(n)
Positive
(%)
Influenza A Influenza B
H3N2 2009 H1N1 Unknown Victoria Yamagata Unknown
Influenza 1222 177 14.5% 4 1 22 1 11 138
Respiratory virus Tested Positive
(n)
Positive
(%) Parainfluenza 1 Parainfluenza 2 Parainfluenza 3 Parainfluenza 4
Parainfluenza 503 8 1.6% 0 1 7 0
Respiratory virus Tested Positive
(n)
Positive
(%) CoV 229E CoV OC43 CoV NL63 CoV HKU1
Coronavirus (CoV) 249 5 2.0% 0 4 0 1
Respiratory virus Tested Positive (n) Positive (%)
RSV 708 26 3.7%
Human metapneumovirus 517 37 7.2%
Rhino-enterovirus 501 53 10.6%
Adenovirus 249 2 0.8%
Week ending on May 5, 2018
0%
5%
10%
15%
20%
25%
30%
35%
40%
45%
9/2 9/23 10/14 11/4 11/25 12/16 1/6 1/27 2/17 3/10 3/31 4/21 5/12 6/2
% P
osi
tive
by
PC
R (
3-w
ee
k m
ovi
ng
ave
rage
)
Week ending
― Influenza
― RSV― hMPV
- - Rhino-Entero― Adenovirus― Parainfluenza
- - Coronavirus
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WISCONSIN DIVISION OF PUBLIC HEALTH RESPIRATORY VIRUS SURVEILLANCE REPORT WEEK ENDING MAY 5, 2018
WISCONSIN STATE SUMMARY
ILI activity trend analysis
Influenza and RSV trend analysis
Influenza rapid antigen tests RSV rapid antigen tests Influenza-like illness (ILI)
Tested Positive (n)
% Positive Tested Positive (n) % Positive ILI % Baseline Threshold Influenza A Influenza B Total
473 6 75 81 17.1% 66 6 9.1% 2.1% 2.4% 3.6%
0%
5%
10%
15%
20%
25%
30%
35%
40%
45%
50%
9/2 9/23 10/14 11/4 11/25 12/16 1/6 1/27 2/17 3/10 3/31 4/21 5/12 6/2
% P
osi
tive
by
anti
gen
det
ecti
on
Week ending
RSV Influenza 3 per. Mov. Avg. (RSV) 3 per. Mov. Avg. (Influenza)
0%
1%
2%
3%
4%
5%
6%
7%
8%
9/2 9/23 10/14 11/4 11/25 12/16 1/6 1/27 2/17 3/10 3/31 4/21 5/12 6/2
Ave
rage
% IL
I
Week ending
Average % ILI Baseline Threshold 3 per. Mov. Avg. (Average % ILI)
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WISCONSIN DIVISION OF PUBLIC HEALTH RESPIRATORY VIRUS SURVEILLANCE REPORT WEEK ENDING MAY 5, 2018
WISCONSIN STATE SUMMARY
ILI activity trend analysis by influenza season, Wisconsin
Influenza-associated hospitalizations, Wisconsin Electronic Disease Surveillance System
September 1, 2017 to present
Reported cumulative influenza-associated hospitalizations by influenza season, Wisconsin
0%
1%
2%
3%
4%
5%
6%
7%
40 42 44 46 48 50 52 2 4 6 8 10 12 14 16 18 20
Ave
rage
% IL
I (3
-wee
k m
ovi
ng
aver
age)
Influenza season week
― 2013-14
- - 2014-15― 2015-16
― 2016-17― 2017-18
A (2009
H1N1)
A
(H3N2)
A
(Unknown)B
Not
reported
<1 84 3 5 64 9 3 9 2 0 0
1-4 139 4 2 105 21 7 22 8 0 0
5-17 170 4 9 90 44 23 26 5 0 0
18-49 760 20 60 490 156 34 121 40 49 8
50-64 1420 40 154 798 362 66 223 70 0 0
65+ 4882 50 472 3081 1101 178 562 141 0 0
Total 7455 121 702 4628 1693 311 963 266 49 8
Postpartum
(≤6 weeks)
Age group
(years)
Total
reported
(n)
Influenza subtypeAdmitted
to ICU
Required
mechanical
ventilation
Pregnant
0
1500
3000
4500
6000
7500
7 8 9 10 11 12 13 14 15 16 17 18 19
Infl
ue
nza
-ass
oci
ate
d
ho
spit
aliz
ati
on
s, c
um
ula
tive
(n)
Influenza season week
2017-2018
2016-2017
2015-2016
2014-2015
2013-2014
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WISCONSIN DIVISION OF PUBLIC HEALTH RESPIRATORY VIRUS SURVEILLANCE REPORT WEEK ENDING MAY 5, 2018
NORTHEASTERN REGION
ILI activity trend analysis
Influenza and RSV trend analysis
Influenza rapid antigen tests RSV rapid antigen tests Influenza-like illness (ILI)
Tested Positive (n)
% Positive Tested Positive (n) % Positive ILI % Baseline Threshold Influenza A Influenza B Total
150 2 23 25 16.7% 21 4 19.0% 0.7% 2.6% 4.0%
0%
5%
10%
15%
20%
25%
30%
35%
40%
45%
50%
9/2 9/23 10/14 11/4 11/25 12/16 1/6 1/27 2/17 3/10 3/31 4/21 5/12 6/2
% P
osi
tive
by
anti
gen
det
ecti
on
Week ending
RSV Influenza 3 per. Mov. Avg. (RSV) 3 per. Mov. Avg. (Influenza)
0%
1%
2%
3%
4%
5%
6%
7%
8%
9/2 9/23 10/14 11/4 11/25 12/16 1/6 1/27 2/17 3/10 3/31 4/21 5/12 6/2
Ave
rage
% IL
I
Week ending
Average % ILI Baseline Threshold 3 per. Mov. Avg. (Average % ILI)
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WISCONSIN DIVISION OF PUBLIC HEALTH RESPIRATORY VIRUS SURVEILLANCE REPORT WEEK ENDING MAY 5, 2018
NORTHWESTERN REGION
ILI activity trend analysis
Influenza and RSV trend analysis
Influenza rapid antigen tests RSV rapid antigen tests Influenza-like illness (ILI)
Tested Positive (n)
% Positive Tested Positive (n) % Positive ILI % Baseline Threshold Influenza A Influenza B Total
76 3 14 17 22.4% 23 4 17.4% 1.0% 1.9% 3.2%
0%
5%
10%
15%
20%
25%
30%
35%
40%
45%
50%
9/2 9/23 10/14 11/4 11/25 12/16 1/6 1/27 2/17 3/10 3/31 4/21 5/12 6/2
% P
osi
tive
by
anti
gen
det
ecti
on
Week ending
RSV Influenza 3 per. Mov. Avg. (RSV) 3 per. Mov. Avg. (Influenza)
0%
3%
6%
9%
12%
9/2 9/23 10/14 11/4 11/25 12/16 1/6 1/27 2/17 3/10 3/31 4/21 5/12 6/2
Ave
rage
% IL
I
Week ending
Average % ILI Baseline Threshold 3 per. Mov. Avg. (Average % ILI)
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WISCONSIN DIVISION OF PUBLIC HEALTH RESPIRATORY VIRUS SURVEILLANCE REPORT WEEK ENDING MAY 5, 2018
SOUTHEASTERN REGION Influenza rapid antigen tests RSV rapid antigen tests Influenza-like illness (ILI)
Tested Positive (n)
% Positive Tested Positive (n) % Positive ILI % Baseline Threshold Influenza A Influenza B Total
215 0 32 32 14.9% 29 1 3.4% 2.9% 4.0% 6.1%
ILI activity trend analysis
Influenza and RSV trend analysis
0%
5%
10%
15%
20%
25%
30%
35%
40%
45%
50%
9/2 9/23 10/14 11/4 11/25 12/16 1/6 1/27 2/17 3/10 3/31 4/21 5/12 6/2
% P
osi
tive
by
anti
gen
det
ecti
on
Week ending
RSV Influenza 3 per. Mov. Avg. (RSV) 3 per. Mov. Avg. (Influenza)
0%
1%
2%
3%
4%
5%
6%
7%
8%
9/2 9/23 10/14 11/4 11/25 12/16 1/6 1/27 2/17 3/10 3/31 4/21 5/12 6/2
Ave
rage
% IL
I
Week ending
Average % ILI Baseline Threshold 3 per. Mov. Avg. (Average % ILI)
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WISCONSIN DIVISION OF PUBLIC HEALTH RESPIRATORY VIRUS SURVEILLANCE REPORT WEEK ENDING MAY 5, 2018
SOUTHERN REGION Influenza rapid antigen tests RSV rapid antigen tests Influenza-like illness (ILI)
Tested
Positive (n)
% Positive Tested Positive (n) % Positive ILI % Baseline Threshold Influenza A Influenza B Total
32 1 6 7 21.9% 1 0 0.0% 1.4% 2.1% 3.2%
ILI activity trend analysis
Influenza and RSV trend analysis
0%
5%
10%
15%
20%
25%
30%
35%
40%
45%
50%
9/2 9/23 10/14 11/4 11/25 12/16 1/6 1/27 2/17 3/10 3/31 4/21 5/12 6/2
% P
osi
tive
by
anti
gen
det
ecti
on
Week ending
RSV Influenza 3 per. Mov. Avg. (RSV) 3 per. Mov. Avg. (Influenza)
0%
1%
2%
3%
4%
5%
6%
7%
8%
9/2 9/23 10/14 11/4 11/25 12/16 1/6 1/27 2/17 3/10 3/31 4/21 5/12 6/2
Ave
rage
% IL
I
Week ending
Average % ILI Baseline Threshold 3 per. Mov. Avg. (Average % ILI)
Page 11
WISCONSIN DIVISION OF PUBLIC HEALTH RESPIRATORY VIRUS SURVEILLANCE REPORT WEEK ENDING MAY 5, 2018
Influenza vaccine composition 2017-2018:
The trivalent vaccines for use in the 2017-2018 influenza season contain the following:
A/Michigan/45/2015 (H1N1)pdm09-like virus
A/Hong Kong/4801/2014 (H3N2)-like virus
B/Brisbane/60/2008-like virus (B/Victoria lineage)
It is recommended that quadrivalent vaccines containing two influenza B viruses contain the above three viruses
and:
B/Phuket/3073/2013-like virus (B/Yamagata lineage)
Cumulative percentage of Wisconsin residents who received 1 or more doses of
influenza vaccine, 2017-2018 influenza season
SEASONAL INFLUENZA VACCINATION
Healthy People
2020 Goal: 70%
2016-2017 Total
Vaccinated: 35.29%
This season so
far: 35.74%
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Pe
rce
nt
Va
ccin
ate
d Last season, by this week, 35.20% of the WI population was vaccinated against
Influenza.
Data source: All influenza vaccination rates presented were calculated using data from the Wisconsin Immunization Registry
(numerator) and Wisconsin population estimates (denominator).
Page 12
WISCONSIN DIVISION OF PUBLIC HEALTH RESPIRATORY VIRUS SURVEILLANCE REPORT WEEK ENDING MAY 5, 2018
Percentage of Wisconsin residents who received one or more doses of influenza
vaccine, by race and ethnicity and region, 2017-2018 influenza season
SEASONAL INFLUENZA VACCINATION
Percentage of Wisconsin residents who received one or more doses of influenza
vaccine, by age group and influenza season
Each season includes doses administered during the same time period (August 1 through May 3).
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Pe
rce
nt
of
resi
de
nts
va
ccin
ate
d
Age group
2014-2015 2015-2016 2016-2017 2017-2018
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
American Indian
Asian
Black
White
Hispanic
Non-Hispanic
Rac
eE
thn
icit
y
Percent of residents vaccinated
Wisconsin
Northeastern
Southeastern
Southern
Western
Northern