Wisconsin STI Surveillance Data 2020 Analysis
In Wisconsin, the surveillance data for sexually transmitted infections (STIs) in 2020 is reported and analyzed for diseases like Chlamydia, Gonorrhea, and Syphilis. The report provides insights on trends, problem areas, and resource allocation for STI interventions. It emphasizes caution in interpreting the data due to potential underreporting and incompleteness, impacted by factors like healthcare provider practices and the influence of COVID-19. A comparison with national Chlamydia rates from CDC data is also included, highlighting Wisconsin's position. Explore the data for a better understanding of STI prevalence in the state.
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Wisconsin STI (Sexually Transmitted Infections) Surveillance Data Reported Cases in 2020 Reported Cases in 2020 Division of Public Health Bureau of Communicable Diseases STI Unit P-00415 (08/21)
Introduction Reportable 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 (STI) surveillance data is collected systematically for the purpose of monitoring the frequency and distribution of STIs in the Wisconsin population. This analysis examines the trends in reportable STIs in Wisconsin to identify problem areas and allocate resources for effective STI interventions. Out of state, cases from the Department of Corrections, and unknown states are not included. To protect and promote the health and safety of the people of Wisconsin. 3
STI 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: Practice 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. To protect and promote the health and safety of the people of Wisconsin. 4
How does Wisconsin compare nationally? 5
Chlamydia Rates* by State, 2019, CDC Data** WI (33rd) IL IA USA MN *Cases per 100,000 population. **Centers for Disease Control and Prevention. Sexually Transmitted Disease Surveillance 2019. Atlanta: U.S. Department of Health and Human Services; 2021; https://www.cdc.gov/std/statistics/2019/default.htm. To protect and promote the health and safety of the people of Wisconsin. 6
Gonorrhea Rates* by State, 2019, CDC Data** MI IL WI (34th) IA USA MN *Cases per 100,000 population. **Centers for Disease Control and Prevention. Sexually Transmitted Disease Surveillance 2019. Atlanta: U.S. Department of Health and Human Services; 2021; https://www.cdc.gov/std/statistics/2019/default.htm. To protect and promote the health and safety of the people of Wisconsin. 7
Primary and Secondary Syphilis Rates* by State, 2019, CDC Data USA IL MI MN WI (46th) IA *Cases per 100,000 population. **Centers for Disease Control and Prevention. Sexually Transmitted Disease Surveillance 2019. Atlanta: U.S. Department of Health and Human Services; 2021; https://www.cdc.gov/std/statistics/2019/default.htm. To protect and promote the health and safety of the people of Wisconsin. 8
Number of STI Cases Reported in Wisconsin, 2020 Chart Title 37,268 40000 35000 30000 26,219 25000 20000 15000 10,239 10000 5000 810 0 Chlamydia Gonorrhea Syphilis All To protect and promote the health and safety of the people of Wisconsin. 9
STI Rates* in Wisconsin, 2020 Syphilis, 14 Gonorrhea, 175 Chlamydia, 449 * Rate per 100, 000 population To protect and promote the health and safety of the people of Wisconsin. 10
STIs are in Increasing Trends, Wisconsin, 2014-2020 STI 39,411 37,268 27,020 37.9% Increase since 2014 2014 2015 2016 2017 2018 2019 2020 To protect and promote the health and safety of the people of Wisconsin. 11
STI Rate* Trends, Wisconsin, 2011-2020 529 Chlamydia 429 449 161 175 Gonorrhea 84 10 Syphilis 14 4 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 * Rate per 100, 000 population To protect and promote the health and safety of the people of Wisconsin. 12
Reported STI Cases by County, Wisconsin, 2020 * Rate per 100, 000 population To protect and promote the health and safety of the people of Wisconsin. 13
Chlamydia 14
Trends of Chlamydia Rates* by Sex, Wisconsin, 2016-2020 704 Female 644 608 350 Male 293 286 2016 2017 2018 2019 2020 * Rate per 100, 000 population To protect and promote the health and safety of the people of Wisconsin. 15
Trends of Chlamydia Rates* by Age, Wisconsin, 2016-2020 2,823 2,612 Age 20-24 2,521 2,061 1,852 1,852 Age 15-19 1,394 1,059 Age 25-29 Age 30-39 1,258 1,229 918 832 212 220 Age 30-39 159 2016 2017 2018 2019 2020 To protect and promote the health and safety of the people of Wisconsin. 16
Chlamydia Rates* by Race, Wisconsin, 2016-2020 2911 2055 Black 2,029 758 528 Native American 423 189 410 309 White Asian 225 197 2016 2017 2018 2019 2020 * Rate per 100, 000 population To protect and promote the health and safety of the people of Wisconsin. 17
Gonorrhea 18
Trends of Gonorrhea Rates* by Sex, Wisconsin, 2016-2020 Male 170 183 166 Female 151 117 113 2016 2017 2018 2019 2020 * Rate per 100, 000 population To protect and promote the health and safety of the people of Wisconsin. 19
Gonorrhea Rates* by Age, Wisconsin, 2016-2020 Age 20-24 Age 30-39 Age 25-29 Age 15-19 735 613 624 587 508 502 467 493 410 331 285 443 Age 40-49 154 190 81 2016 2017 2018 2019 2020 * Rate per 100, 000 population To protect and promote the health and safety of the people of Wisconsin. 20
Gonorrhea Rates* by Race, Wisconsin, 2016-2020 1,415 1,251 Black 879 198 129 44 62 36 Native American Asian White 29 2016 49 2017 2018 2019 2020 * Rate per 100, 000 population To protect and promote the health and safety of the people of Wisconsin. 21
Syphilis Cases and Rates* by County, Wisconsin, 2020 To protect and promote the health and safety of the people of Wisconsin. 23
Syphilis Cases and Percent Difference from Previous Year, Wisconsin, 2011-2020 70% 900 58% 60% 800 50% 700 38% 40% 600 30% 500 14% 20% 400 10% 300 0% 200 -10% 100 -3% -9% -20% 0 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Case % increased To protect and promote the health and safety of the people of Wisconsin. 24
Trends of Syphilis Cases and Rates*, Wisconsin, 2011-2020 Chart Title 900 16 14 800 14 700 12 10 600 10 Number of Cases Syphilis Rates 500 8 400 6 300 4 200 2 100 198 266 255 279 270 427 563 511 585 810 0 0 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Case Rate * Rate per 100, 000 population To protect and promote the health and safety of the people of Wisconsin. 25
Milwaukee County vs. Rest of Wisconsin, Syphilis Cases by Stage, 2020 64% 63% 60% 40% 37% 36% Primary Secondary Non-Primary, Non Secondary Milwaukee County Other Counties To protect and promote the health and safety of the people of Wisconsin. 26
Milwaukee County vs. Rest of Wisconsin, Syphilis Rates* by Stage, 2020 1.5 Primary 13.6 1.2 Secondary 9.5 1.6 Non-Primary, Non Secondary 15.2 0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 Non-Milwaukee Milwaukee * Rate per 100, 000 population To protect and promote the health and safety of the people of Wisconsin. 27
Primary & Secondary Syphilis Rates*, Wisconsin, 2016-2020 3.5 Primary 2.6 2 Secondary 1.8 1.5 1.5 1.4 1.2 1.2 0.9 2016 2017 2018 2019 2020 *Rate per 100,000 population To protect and promote the health and safety of the people of Wisconsin. 28
Primary & Secondary Syphilis Cases and Rates* in Milwaukee County vs. Rest of Wisconsin, 2020 Primary & Secondary Syphilis Cases Primary &Secondary Syphilis Rates 250 219 2.8 200 136 150 100 23.2 50 0 Milwaukee county Other counties Milwaukee county Other counties * Rate per 100, 000 population To protect and promote the health and safety of the people of Wisconsin. 29
Trends of Primary & Secondary Syphilis Rates* by Sex, Wisconsin, 2016-2020 Male 9.8 6.1 4.5 2.4 Female 0.7 0.3 2016 2017 2018 2019 2020 * Rate per 100, 000 population To protect and promote the health and safety of the people of Wisconsin. 30
Trends of Primary and Secondary Syphilis Rates* by Age, Wisconsin, 2016- 2020 Age 25-29 16.8 Age 30-39 Age 20-24 13.8 13.3 13.5 10.3 9.8 Age 40-49 8.4 7.7 7.5 6.6 8.1 6.5 3.0 2.6 Age 15-19 0.8 2016 2017 2018 2019 2020 * Rate per 100, 000 population To protect and promote the health and safety of the people of Wisconsin. 31
Trends of Primary and Secondary Syphilis Rates* by Race, Wisconsin, 2020 Black 34.1 24.0 Native American Asian 13.6 12.0 10.0 3.2 3.4 1.6 White 2.5 1.5 2016 2017 2018 2019 2020 * Rate per 100, 000 population To protect and promote the health and safety of the people of Wisconsin. 32
Milwaukee County Sexually Transmitted Infections by Zip Code 22
Reported Syphilis Cases by Zip Code, Milwaukee County, 2020 To protect and promote the health and safety of the people of Wisconsin. 34
Reported Gonorrhea Cases by Zip Code, Milwaukee County, 2020 To protect and promote the health and safety of the people of Wisconsin. 35
Reported Chlamydia Cases by Zip Code, Milwaukee County, 2020 To protect and promote the health and safety of the people of Wisconsin. 36
