Overview

• Mexico’s federal health authority reported an over 80% decline by epidemiological week 33 versus 2024, with 6,923 cases compared with 37,340, crediting its national arbovirus strategy.
• Argentina confirmed out-of-season transmission during winter, with 299 suspected cases and two confirmed between July 27 and August 16, including one in Formosa and one in a Buenos Aires resident returning from Brazil.
• Galicia launched a free dengue vaccination program for travelers from age four, using a two-dose schedule spaced three months apart.
• Córdoba unveiled a 2025–2026 plan for integrated prevention and vaccination after recording a 97% year‑on‑year reduction up to week 18 in the 2024–2025 season.
• National surveys in Argentina found persistent knowledge gaps and inconsistent preventive habits, with only 12% of 18–24 year‑olds knowing more than the disease’s name.