Overview

• Provisional CDC data show nearly 4,000 congenital syphilis cases in 2024, a 12th straight annual increase and roughly 2% higher than 2023.
• Total reported STIs topped 2.2 million last year but fell 9% from 2023, with declines in chlamydia, gonorrhea, and infectious syphilis stages.
• Primary and secondary syphilis cases dropped about 22% in 2024, while gonorrhea fell nearly 10% and chlamydia decreased 8%.
• The CDC credits greater awareness and prevention tools, including self-tests and doxycycline post-exposure prophylaxis, for improvements in adult trends.
• A recent CDC study found only about 80% of pregnant patients are screened for syphilis, helping explain why newborn infections continue to rise.