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Argentina Reports 71% Surge in Syphilis Cases in 2025, With Young Adults Most Affected

Officials are refocusing on condom promotion and routine screening to curb transmission.

Overview

  • The National Epidemiological Bulletin recorded 55,183 syphilis diagnoses in 2025, a 71% rise over the 2020–2024 baseline, concentrated in people aged 15–39.
  • In Salta, 1,602 cases were confirmed in 2025, mostly among 20–39-year-olds, with 56.1% women and seasonal peaks in October and December centered in the province’s central area.
  • Reported congenital syphilis notifications fell in 2025 versus recent years, but officials flag those figures as provisional pending validation.
  • Infectious-disease specialists link the surge to reduced condom use, substance-associated sexual encounters, and reliance on HIV PrEP, which does not prevent bacterial STIs.
  • Authorities promote routine screening, including rapid tests and prenatal checks, and stress that free, highly effective penicillin-based treatment is available for patients and partners.