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Syphilis epidemic

This data dashboard summarizes trends in syphilis diagnoses in King County based on laboratory results and case reports to Public Health – Seattle & King County.


Short URL: kingcounty.gov/syphilis

2024 Syphilis testing guidelines for cisgender women (including pregnant individuals) and cisgender men who have sex with women*

  • Sexually active individuals aged 45 and under who have not been tested since January 2021 should get tested for syphilis.
  • Sexually active individuals should test annually and whenever they get medical care (up to every 3 months) if they: (1) use injection drugs (2) use methamphetamine or nonprescription opioids (3) are houseless or unstably housed (4) have transactional sex (5) entered a correctional facility or have been incarcerated in the last 2 years (6) had syphilis or gonorrhea in the last 2 years (7) are living with HIV and are sexually active outside of a mutually monogamous relationship (8) are a woman whose male partners have sex with both men and women (9) have a sex partner with any of the above risk factors for syphilis.
  • Pregnant individuals should be tested during their: (1) first prenatal care visit (2) 3rd-trimester [laboratory testing done during the 24th-28th week of pregnancy] (3) time of delivery.
  • Pregnant individuals who have not had prenatal care, or their prenatal care status is unknown, should be tested any time they are in a clinical setting (i.e., emergency department, jail, substance use treatment facilities, OB triage, labor and delivery, etc.)

*Syphilis testing guidelines for other populations can be found in the 2024 Syphilis Screening Guidelines (431 KB)

Resources

For medical providers

Syphilis guidelines and resources for healthcare providers are available on our resources for medical providers page.

  • For urgent questions, call 206-744-3590 and ask for the Sexual Health Clinic Provider of the Day.
  • For questions about prior titers, past history, care coordination, follow-up, partner testing, and treatment, call 206-744-3590.
  • For non-urgent clinical questions, visit the STD Clinical Consultation Network. An expert will contact you within 72 hours.
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