Syphilis

Syphilis is a sexually transmitted infection caused by the bacterium Treponema pallidum. Syphilis is spread from person to person through direct contact with a syphilis sore. 

For information, advice and support on sexual health visit HSE-sexual health services

902 The number of Early Infectious Syphilis (EIS) notifications in 2024
17.5 The national notification rate per 100,000 population

Last updated: 9 June 2026