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 https://www2.hse.ie/services/sexual-health/
902 The number of Early Infectious Syphilis (EIS) notifications in 2025.
17.5 The national notification rate per 100,000 population.
Last updated: 10 June 2026
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