Sexually Transmitted Infections (STI) are the most commonly reported diseases in Washington State. Many are curable, others are treatable, all are preventable. Most people with STIs don't have obvious symptoms, but without treatment they can spread disease and possibly develop serious complications. Our STI program staff can help answer questions.
COVID-19 for Providers l Alerts l Data l Cases and Rates l Fact Sheets
- April 2020 CDC Guidelines for Treatment and Management of Sexually Transmitted Diseases during COVID-19 Social Distancing (PDF)
- Our Statement Regarding STD Management during COVID-19 (PDF)
- COVID-19 Resources for Communities Served by the Office of Infectious Disease
Health Care Providers Alerts
- Congenital Syphilis Provider Letter and Updated Syphilis Screening Guidelines (PDF) 5/12/2022
- Syphilis Health Advisory -PHSKC (PDF) 1/21/2021
- Hepatitis A Among Persons Living with HIV (PDF) 7/2020
- HIV Among PWID (PDF) 1/2019
2022 Preliminary Washington State STI Data*
|Chlamydia†**||Gonorrhea‡||Primary and Secondary
Rate*: 3965.7 per 100,000
# of cases: 27,995
Rate*: 141.0 per 100,000
# of cases: 10,799
Rate*: 24.6 per 100,000
# of cases: 1,883
|# of cases: 54
# of cases in 2021: 53
Rate*: 280.0 per 100,000
# of cases: 10,700
Rate*: 183.4 per 100,000
# of cases: 7,006
Rate*: 35.4 per 100,000
# of cases: 1,351
Rate*: 447.5 per 100,000
# of cases: 17,162
Rate*: 97.1 per 100,000
# of cases: 3,722
Rate*: 13.7 per 100,000
# of cases: 525
*Note: Washington State STI data may differ from CDC STI data as additional information is gathered over time. All rate calculations presented here are preliminary and calculated using the most recently available population estimates; therefore, please interpret them with caution.
**Note: Chlamydia & Gonorrhea case counts for 2022 include cases which were reported through electronic lab reporting (ELR) only.
† Data source: PHIMS-STD April 2023, WELRS
‡ Data source: PHIMS-STD April 2023. Note: Gonorrhea case counts have been updated from previously reported numbers to reflect changes in case coding.
Disclaimer: Case counts reflect reported cases only.
STI Cases and rates by county, Washington State
Sexually Transmitted Infection Cases and Rates by County, 2022 (PDF)
Sexually Transmitted Infection Cases and Rates by County, 2021 (PDF)
Sexually Transmitted Infection Cases and Rates by County, 2020 (PDF)
Sexually Transmitted Infection Cases and Rates by County, 2019 (PDF)
Sexually Transmitted Infection Cases and Rates by County, 2018 (PDF)
Sexually Transmitted Infection Cases and Rates by County, 2017 (PDF)
Sexually Transmitted Infection Cases and Rates by County, 2016 (PDF)
CDC Sexually Transmitted Disease Surveillance 2018 (PDF)
Get Tested, Get Treated!
Anyone under the age of 25 and is sexually active should get tested annually. At any age, if you think you may have been exposed to a sexually transmitted disease, you and your sex partner(s) should visit a health clinic, hospital or doctor for testing and treatment.
For more information and answers to common questions about Sexually Transmitted Disease, go to Frequently Asked Questions.
To find a location for testing, go to Getting Tested.
STI Fact Sheets
Centers for Disease Control and Prevention (CDC) offers fact sheet web pages in English and Spanish with information on different sexually transmitted infections. Use the links below to go to the fact sheets.
- Bacterial Vaginosis
- Chlamydia & LGV
- Genital Herpes
- Pelvic Inflammatory Disease
- CDC Spanish STD Fact Sheet
- Human Papilloma Virus (HPV)
DOH Office of Infectious Disease Syndemic Reports