Overview
- Provisional CDC data show about 2.2 million reported STIs in 2024, an approximate 8–9% decline from 2023.
- Primary and secondary syphilis cases fell by roughly 21.7% in 2024, with overall syphilis down about 9.1%.
- Chlamydia dropped to about 1.5 million cases (down ~8%) and gonorrhea declined to 543,409 (down ~9.6%).
- Congenital syphilis rose to 3,941 cases in 2024, a roughly 1.6% increase over 2023 and the 12th consecutive annual rise.
- CDC officials cite expanded prevention tools like self-tests and doxycycline PEP for adult declines, while a recent CDC study found only about 80% of pregnant patients receive syphilis screening, and trends can vary significantly by community.