2022 Wisconsin STIs Surveillance Data
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Wisconsin Sexually Transmitted Infections (STIs)
Surveillance Data
Reported Cases in 2022
Division of Public Health
Bureau of Communicable Diseases
STI Unit
P-00415 (07/2023)
Introduction
2
Reportable Sexually Transmitted Infections (STIs) in Wisconsin:
Chlamydia trachomatis
(
Chlamydia
) - Includes d
isease classifications
such as urethritis, cervicitis and conjunctivitis.
Neisseria gonorrhoeae
(
Gonorrhea
) - Includes d
isease classifications
such as urethritis, cervicitis, and resistant strains.
Resistant or reduced
susceptibility to antibiotic treatment are confirmed by antibiotic
susceptibility testing (AST).
Treponema pallidum
(
Syphilis
) - Wisconsin data includes all stages and
CDC data includes primary and secondary stages of syphilis.
Introduction
3
Sexually transmitted infections (STIs) surveillance data are collected
systematically through WEDSS* for the purpose of monitoring the
frequency and distribution of STIs in the Wisconsin population.
This analysis examines trends in reportable STIs in Wisconsin to identify
problem areas and allocate resources for effective STI interventions.
Out of state, cases from correctional facilities, and unknown states are
not included.
Rates are calculated based on 2020 population data available in
Wisconsin Interactive Statistics on Health (
WISH) population module.
*WEDSS is a secure, web-based system designed to facilitate reporting, investigation, and
surveillance of communicable diseases in Wisconsin. It is designed for
public health staff
,
infection control practitioners
,
clinical laboratories
,
clinics
, and
other disease reporters
.
STIs surveillance data should be interpreted
with caution
4
STI data may be underreported, unevenly reported, and
incomplete.
Elements that impact the completeness and accuracy of STI data
include:
Practices and capacity of STI screening by health care
providers.
Health care providers’ compliance with case reporting.
Completeness and promptness of case reporting.
COVID-19 may have influenced the number of cases diagnosed
and reported in 2020 and 2021.
How Does Wisconsin Compare
with Neighboring States?
Chlamydia cases per 100,000 people in Wisconsin
and neighboring states: 2021
6
Gonorrhea cases per 100,000 people in Wisconsin
and neighboring states: 2021
7
8
Primary and secondary syphilis cases per 100,000
in Wisconsin and neighboring states: 2021
Reported Cases of Sexually
Transmitted Infections (STIs)
2022
The number of reported STI cases have
increased by 23% in Wisconsin from
2015 to 2022.
10
STI rates per 100,000 population of reported STI
cases, Wisconsin - 2022
11
Syphilis (all stages) - rates of reported cases in
Wisconsin 2013 – 2022
Rate
of reported Syphilis cases increased
556
%
since 2013
12
Rate per 100,000 population
Chlamydia - rate of reported cases in Wisconsin
2013 – 2022
13
Rate per 100,000 population
Gonorrhea - rate of reported cases in Wisconsin
2013 – 2022
Gonorrhea rate decreased 17% in 2022 from 2021
14
Rate per 100,000 population
Primary and
s
econdary
s
yphilis—
r
ates of
r
eported
c
ases by
s
tate, United States and
t
erritories, 201
2
and 202
1
Syphilis (All stages) — rates of reported cases by
county, Wisconsin, 2012 and 2021
16
2012
2022
Syphilis (All stages) rate increased by 18%
from 2021-2022
in Wisconsin.
Trends of Syphilis
Cases
and) Wisconsin 2014–2022
17
Rates (per 100,000
population
People
aged 30–39
have the
highest primary and
secondary syphilis rate reported -
2022.
Number of primary and secondary syphilis rates per 100,000 people by age
Wisconsin: 2018–2022
18
Age 15-19
Age 20-29
Age 40-49
Age 30-39
Men
have a
higher rate of Syphilis
, the
rate
remained same for women
from 2021–2022.
Number of primary and secondary syphilis rates per 100,000 people by sex at
birth, Wisconsin: 2018–2022
19
Female
Male
2.7 times higher
than women
Black people
have the
highest primary and
secondary syphilis rate
in Wisconsin - 2022.
Number of primary and secondary syphilis rates per 100,000 people by race and
ethnicity, Wisconsin: 2018–2022
20
Black
Native
American
Asian
White
R
a
t
e
o
f
p
r
i
m
a
r
y
a
n
d
s
e
c
o
n
d
a
r
y
s
y
p
h
i
l
i
s
i
n
B
l
a
c
k
i
s
2
5
t
i
m
e
s
t
h
e
r
a
t
e
a
m
o
n
g
W
h
i
t
e
a
n
d
1
3
t
i
m
e
s
t
h
e
A
s
i
a
n
a
n
d
4
t
i
m
e
s
t
h
e
N
a
t
i
v
e
A
m
e
r
i
c
a
n
.
The Southeastern Region has the highest syphilis
(All stages)rate in Wisconsin.
Number of syphilis diagnoses per 100,000 population by
r
egion of residence,
Wisconsin
:
2022
21
Note: Cases from corrections and unknown county are not included.
Congenital Syphilis
22
Trend of reported congenital Syphilis
cases
in
Wisconsin 2013 - 2022
480% increase
from 2020 to
2022
Congenital syphilis cases are in increasing
trend in Wisconsin, and so is Nationally
Distribution of congenital syphilis cases by county
in Wisconsin – 2022 (n=29)
24
Milwaukee county
accounts for 82% of
reported congenital
Syphilis cases in
Wisconsin.
Count of cases
Distribution of congenital Syphilis cases in
Milwaukee County by zip code - 2022
25
Chlamydia Trends:
Nationally and in Wisconsin
27
Chlamydia—
r
ates of
r
eported
c
ases by
s
tate,
United States and
t
erritories, 201
2
and 202
1
28
2012
2022
Chlamydia
cases per 100,000 persons
by
county
,
Wisconsin
, 201
2
and 202
2
People aged 30–39
is the only age group that
have
increased chlamydia rates
in Wisconsin.
Number of chlamydia diagnoses per 100,000 people by age at diagnosis,
Wisconsin, 2018–2022
29
Age 20–24
Age 15–19
Age 25–29
Age 40–49
Age 30–39
While cis-
w
omen
have a
higher rate
of
chlamydia in Wisconsin, the rate decreased in
both cis-
men
and
cis-
women
from 2021–2022.
Number of chlamydia diagnoses per 100,000 people by sex at birth
Wisconsin, 2018–2022
30
Female
Male
While
Black people
have a
higher rate
of
Chlamydia in Wisconsin, the
rate increased
most
in
Native Americans
from 2021 to 2022.
Number of Chlamydia diagnoses per 100,000 people by race
Wisconsin, 2018-2022
31
White
Asian
Native
American
Black
While the Chlamydia rate decreased in all
regions from 2021 to 2022, the
Southern
Region
saw the highest decrease.
Number of chlamydia rate per 100,000 people by region of residence, Wisconsin,
2018–2022
32
Northeastern
Southern
Southeastern
Western
Northern
Gonorrhea Trends:
Nationally and in Wisconsin
Gonorrhea—
r
ates of
r
eported
c
ases by
s
tate,
United States and
t
erritories, 201
2
and 202
1
* Per 100,000
population
35
2012
2022
Gonorrhea—rates of reported cases by county,
Wisconsin, 2012 and 2022
Gonorrhea rates of reported cases dropped
among all age groups; the biggest drop was
observed in
those 30-39 years
.
Number of gonorrhea diagnoses per 100,000 people by age at diagnosis,
Wisconsin, 2018–2022
36
Age 20-24
Age 15-19
Age 25-29
Age 40-49
Age 30-39
The gonorrhea rate of reported cases in
men is
1.1 times more
than in
women
in Wisconsin.
Number of gonorrhea diagnoses per 100,000 people by sex at birth,
Wisconsin: 2018–2022
37
Female
Male
While
Black people
have a
higher rate
of
gonorrhea in Wisconsin, the
rate increased
only
in
Native Americans
from 2021– 2022.
Number of gonorrhea diagnoses per 100,000 people by race and ethnicity
Wisconsin, 2018–2022
38
White
Asian
Native
American
Black
While the
Southeastern Region
has the
highest rate
of gonorrhea
in the state, the rate of gonorrhea
decreased in all regions from 2021-2022.
Number of gonorrhea diagnoses per 100,000 people by region of residence
Wisconsin: 2018–2022
39
Northeastern
Southeastern
Western
Northern
Southern
Disseminated Gonococcal Infection
(DGI)
Definition of Disseminated Gonococcal
Infection (DGI)
DGI is an uncommon, but severe,
complication of untreated gonorrhea.
It is thought that DGI occurs in 0.5-3%
of untreated gonorrhea cases. DGI
occurs when the sexually transmitted
pathogen
Neisseria gonorrhoeae
invades the blood stream and spreads
to distant sites in the body, leading to
clinical manifestations such as septic
arthritis, polyarthralgia, tenosynovitis,
petechial/pustular skin lesions,
bacteremia, or, on rare occasions,
endocarditis or meningitis.
Trends of confirmed disseminated gonococcal
infection (DGI) reported, Wisconsin, 2019 - 2021
42
n=48
Distribution of confirmed disseminated
gonococcal infection (DGI) by county, Wisconsin,
2019-2022 (n=48)
43
Milwaukee County
accounted for 38%
of reported DGI
cases in Wisconsin
This slide set was prepared by the Sexually Transmitted Infection (STI) Intervention Unit, Bureau of Communicable Diseases, Division of Public Health Wisconsin Department of Health Services.
The slides display trends for STDs in Wisconsin in 2022, with data sourced from the Wisconsin Electronic Disease Surveillance System (WEDSS). WEDSS is a secure, web-based system designed to facilitate reporting, investigation, and surveillance of communicable diseases in Wisconsin.
WEDSS is a secure, web-based system designed to facilitate reporting, investigation, and surveillance of communicable diseases in Wisconsin. It is designed for public health staff, infection control practitioners, clinical laboratories, clinics, and
other disease reporters.
Analyzing reported cases of Sexually Transmitted Infections (STIs) in Wisconsin for the year 2022, as documented by the Division of Public Health's STI Unit. The data provides valuable insights into the epidemiology and trends of STIs in the region, aiding in public health decision-making and interventions.
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Presentation Transcript
Wisconsin Sexually Transmitted Infections (STIs) Surveillance Data Reported Cases in 2022 Division of Public Health Bureau of Communicable Diseases STI Unit P-00415 (07/2023)
Introduction Reportable Sexually Transmitted Infections (STIs) in Wisconsin: Chlamydia trachomatis (Chlamydia) - Includes disease classifications such as urethritis, cervicitis and conjunctivitis. Neisseria gonorrhoeae (Gonorrhea) - Includes disease classifications such as urethritis, cervicitis, and resistant strains. Resistant or reduced susceptibility to antibiotic treatment are confirmed by antibiotic susceptibility testing (AST). Treponema pallidum (Syphilis ) - Wisconsin data includes all stages and CDC data includes primary and secondary stages of syphilis. To protect and promote the health and safety of the people of Wisconsin. 2
Introduction Sexually transmitted infections (STIs) surveillance data are collected systematically through WEDSS* for the purpose of monitoring the frequency and distribution of STIs in the Wisconsin population. This analysis examines trends in reportable STIs in Wisconsin to identify problem areas and allocate resources for effective STI interventions. Out of state, cases from correctional facilities, and unknown states are not included. Rates are calculated based on 2020 population data available in Wisconsin Interactive Statistics on Health (WISH) population module. *WEDSS is a secure, web-based system designed to facilitate reporting, investigation, and surveillance of communicable diseases in Wisconsin. It is designed for public health staff, infection control practitioners, clinical laboratories, clinics, and other disease reporters. To protect and promote the health and safety of the people of Wisconsin. 3
STIs surveillance data should be interpreted with caution STI data may be underreported, unevenly reported, and incomplete. Elements that impact the completeness and accuracy of STI data include: Practices and capacity of STI screening by health care providers. Health care providers compliance with case reporting. Completeness and promptness of case reporting. COVID-19 may have influenced the number of cases diagnosed and reported in 2020 and 2021. To protect and promote the health and safety of the people of Wisconsin. 4
How Does Wisconsin Compare with Neighboring States?
Chlamydia cases per 100,000 people in Wisconsin and neighboring states: 2021 542 481 479 456 448 392 U.S. total Illinois Iowa Wisconsin Michigan Minnesota 6 To protect and promote the health and safety of the people of Wisconsin.
Gonorrhea cases per 100,000 people in Wisconsin and neighboring states: 2021 245 234 219 207 183 178 U.S. total Illinois Michigan Iowa Minnesota Wisconsin 7 To protect and promote the health and safety of the people of Wisconsin.
Primary and secondary syphilis cases per 100,000 in Wisconsin and neighboring states: 2021 12 11 7 7 4 3 U.S. total Illinois Minnesota Michigan Iowa Wisconsin 8 To protect and promote the health and safety of the people of Wisconsin.
Reported Cases of Sexually Transmitted Infections (STIs) 2022
The number of reported STI cases have increased by 23% in Wisconsin from 2015 to 2022. STI trend in Wisconsin 2022 45,000 37,957 36,299 40,000 35,000 29,459 30,000 25,000 20,000 15,000 10,000 5,000 0 2015 2016 2017 2018 2019 2020 2021 2022 To protect and promote the health and safety of the people of Wisconsin. 10
STI rates per 100,000 population of reported STI cases, Wisconsin - 2022 2022 Syphilis 33 Gonorrhea 150 Chlamydia 440 0 100 200 300 400 500 To protect and promote the health and safety of the people of Wisconsin. 11
Syphilis (all stages) - rates of reported cases in Wisconsin 2013 2022 Rateof reported Syphilis cases increased 556% since 2013 Syphilis Trend 35 33 30 25 20 14 15 9 10 7 5 5 0 2014 2016 2018 2020 2022 Rate per 100,000 population To protect and promote the health and safety of the people of Wisconsin. 12
Chlamydia - rate of reported cases in Wisconsin 2013 2022 490 470 449 440 406 2014 2016 2018 2020 2022 Rate per 100,000 population 13 To protect and promote the health and safety of the people of Wisconsin.
Gonorrhea - rate of reported cases in Wisconsin 2013 2022 Gonorrhea rate decreased 17% in 2022 from 2021 175 150 139 115 72 2014 2016 2018 2020 2022 Rate per 100,000 population 14 To protect and promote the health and safety of the people of Wisconsin.
Primary and secondary syphilisrates of reported cases by state, United States and territories, 2012 and 2021 15 To protect and promote the health and safety of the people of Wisconsin.
Syphilis (All stages) rates of reported cases by county, Wisconsin, 2012 and 2021 2022 2012 16 To protect and promote the health and safety of the people of Wisconsin.
Syphilis (All stages) rate increased by 18% from 2021-2022 in Wisconsin. Trends of Syphilis Cases and) Wisconsin 2014 2022 Chart Title 33 2000 35 1800 28 30 1600 25 1400 Syphilis case Syphilis rate 1200 20 1000 14 15 800 10 10 9 600 7 10 5 5 400 5 1915 200 279 270 427 563 511 585 810 1608 0 0 2014 2015 2016 2017 2018 2019 2020 2021 2022 Axis Title Rates (per 100,000 population 17 To protect and promote the health and safety of the people of Wisconsin.
People aged 3039 have the highest primary and secondary syphilis rate reported - 2022. Number of primary and secondary syphilis rates per 100,000 people by age Wisconsin: 2018 2022 Primary and Secondary Reported Syphilis in 2022 32 35 Age 20-29 28 29 18 30 Age 30-39 28 18 25 Age 40-49 20 15 9 8 7 9 6 10 Age 15-19 5 2 0 2018 2019 2020 2021 2022 To protect and promote the health and safety of the people of Wisconsin. 18
Men have a higher rate of Syphilis, the rate remained same for women from 2021 2022. Number of primary and secondary syphilis rates per 100,000 people by sex at birth, Wisconsin: 2018 2022 2.7 times higher than women Chart Title 19 18 20 Male 18 16 14 12 10 7 7 Female 8 5 6 4 1 2 0 2018 2019 2020 2021 2022 To protect and promote the health and safety of the people of Wisconsin. 19
Black people have the highest primary and secondary syphilis rate in Wisconsin - 2022. Number of primary and secondary syphilis rates per 100,000 people by race and ethnicity, Wisconsin: 2018 2022 Rate of reported syphilis case by race 2018-2022 Rate of primary and secondary syphilis in Black is 25 times the rate among White and 13 times the Asian and 4 times the Native American. 120 104 Black 101 100 80 60 Native American Asian White 14 5 26 40 23 8 2 0 20 4 4 4 2021 0 2018 2019 2020 2022 To protect and promote the health and safety of the people of Wisconsin. 20
The Southeastern Region has the highest syphilis (All stages)rate in Wisconsin. Number of syphilis diagnoses per 100,000 population by region of residence, Wisconsin: 2022 66 1600 70 1400 60 1200 50 1000 40 800 30 17 600 14 12 10 20 400 176 48 1353 212 94 10 200 0 0 Syphilis Cases by Region Syphilis Rate by Region Note: Cases from corrections and unknown county are not included. 21 To protect and promote the health and safety of the people of Wisconsin.
Congenital Syphilis To protect and promote the health and safety of the people of Wisconsin. 22
Trend of reported congenital Syphilis cases in Wisconsin 2013 - 2022 Congenital syphilis cases are in increasing trend in Wisconsin, and so is Nationally Trend of Reported Congenital Syphilis Cases in Wisconsin 2022 29 480% increase from 2020 to 2022 16 5 3 2 1 0 0 0 0 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 To protect and promote the health and safety of the people of Wisconsin.
Distribution of congenital syphilis cases by county in Wisconsin 2022 (n=29) Milwaukee county accounts for 82% of reported congenital Syphilis cases in Wisconsin. Count of cases To protect and promote the health and safety of the people of Wisconsin. 24
Distribution of congenital Syphilis cases in Milwaukee County by zip code - 2022 25 To protect and promote the health and safety of the people of Wisconsin.
Chlamydia Trends: Nationally and in Wisconsin
Chlamydiarates of reported cases by state, United States and territories, 2012 and 2021 27 To protect and promote the health and safety of the people of Wisconsin.
Chlamydia cases per 100,000 persons by county, Wisconsin, 2012 and 2022 2022 2012 28 To protect and promote the health and safety of the people of Wisconsin.
People aged 3039 is the only age group that have increased chlamydia rates in Wisconsin. Number of chlamydia diagnoses per 100,000 people by age at diagnosis, Wisconsin, 2018 2022 2,642 Age 20 24 2,407 1,866 1,357 Age 15 19 Age 25 29 Age 30 39 1,754 1,165 324 260 498 129 Age 40 49 2018 2019 2020 2021 2022 To protect and promote the health and safety of the people of Wisconsin. 29
While cis-women have a higher rate of chlamydia in Wisconsin, the rate decreased in both cis-men and cis-women from 2021 2022. Number of chlamydia diagnoses per 100,000 people by sex at birth Wisconsin, 2018 2022 635 Female 577 (-9.1%) 316 299 Male (-5.4%) 2018 2019 2020 2021 2022 To protect and promote the health and safety of the people of Wisconsin. 30
While Black people have a higher rate of Chlamydia in Wisconsin, the rate increased most in Native Americans from 2021 to 2022. Number of Chlamydia diagnoses per 100,000 people by race Wisconsin, 2018-2022 Chart Title 2413 Black 2327 723 (13%) 239 Native American 642 234 Asian White 221 2021 205 2018 2019 2020 2022 To protect and promote the health and safety of the people of Wisconsin. 31
While the Chlamydia rate decreased in all regions from 2021 to 2022, the Southern Regionsaw the highest decrease. Number of chlamydia rate per 100,000 people by region of residence, Wisconsin, 2018 2022 Chlamydia Cases by Region 2018-2022 716 Southeastern 669 407 Southern 356 350 299 Northeastern Western Northern 320 277 240 236 2018 2019 2020 2021 2022 To protect and promote the health and safety of the people of Wisconsin. 32
Gonorrhea Trends: Nationally and in Wisconsin
Gonorrhearates of reported cases by state, United States and territories, 2012 and 2021 * Per 100,000 population 34 To protect and promote the health and safety of the people of Wisconsin.
Gonorrhearates of reported cases by county, Wisconsin, 2012 and 2022 2022 2012 35 To protect and promote the health and safety of the people of Wisconsin.
Gonorrhea rates of reported cases dropped among all age groups; the biggest drop was observed in those 30-39 years. Number of gonorrhea diagnoses per 100,000 people by age at diagnosis, Wisconsin, 2018 2022 697 565 623 Age 20-24 Age 30-39 546 432 543 471 412 Age 15-19 Age 25-29 422 408 378 110 252 88 118 Age 40-49 2018 2019 2020 2021 2022 To protect and promote the health and safety of the people of Wisconsin. 36
The gonorrhea rate of reported cases in men is 1.1 times more than in women in Wisconsin. Number of gonorrhea diagnoses per 100,000 people by sex at birth, Wisconsin: 2018 2022 188 200 180 158 142 Male 149 129 160 170 140 Female 120 100 80 60 40 20 0 2018 2019 2020 2021 2022 To protect and promote the health and safety of the people of Wisconsin. 37
While Black people have a higher rate of gonorrhea in Wisconsin, the rate increased only in Native Americans from 2021 2022. Number of gonorrhea diagnoses per 100,000 people by race and ethnicity Wisconsin, 2018 2022 1,425 Chart Title 1,323 Black Native American 182 58 196 39 White Asian 42 56 2021 2018 2019 2020 2022 To protect and promote the health and safety of the people of Wisconsin. 38
While the Southeastern Region has the highest rate of gonorrhea in the state, the rate of gonorrhea decreased in all regions from 2021-2022. Number of gonorrhea diagnoses per 100,000 people by region of residence Wisconsin: 2018 2022 Gcrate by Region 2018- 2022 329 304 Southeastern 260 145 97 81 88 77 Southern 91 54 Northeastern Western Northern 63 28 58 30 45 2018 2019 2020 2021 2022 39
Definition of Disseminated Gonococcal Infection (DGI) DGI is an uncommon, but severe, complication of untreated gonorrhea. It is thought that DGI occurs in 0.5-3% of untreated gonorrhea cases. DGI occurs when the sexually transmitted pathogen Neisseria gonorrhoeae invades the blood stream and spreads to distant sites in the body, leading to clinical manifestations such as septic arthritis, polyarthralgia, tenosynovitis, petechial/pustular skin lesions, bacteremia, or, on rare occasions, endocarditis or meningitis. To protect and promote the health and safety of the people of Wisconsin.
Trends of confirmed disseminated gonococcal infection (DGI) reported, Wisconsin, 2019 - 2021 n=48 16 12 11 9 2019 2020 2021 2022 42 To protect and promote the health and safety of the people of Wisconsin.
Distribution of confirmed disseminated gonococcal infection (DGI) by county, Wisconsin, 2019-2022 (n=48) Milwaukee County accounted for 38% of reported DGI cases in Wisconsin 43 To protect and promote the health and safety of the people of Wisconsin.
