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flag Brazil approves first single-dose dengue vaccine, effective against severe cases, for rollout in 2026.

flag Brazil has approved the world’s first single-dose dengue vaccine, Butantan-DV, for people aged 12 to 59, developed by the Butantan Institute in São Paulo. flag The vaccine showed 91.6% efficacy against severe dengue in trials with over 16,000 participants and is expected to be rolled out in early 2026. flag It simplifies vaccination compared to existing two-dose options. flag Dengue cases surged globally in 2024, with over 14.6 million infections and nearly 12,000 deaths, half in Brazil, driven in part by climate change expanding mosquito habitats. flag Brazil plans to produce 30 million doses by mid-2026 with help from WuXi Biologics.

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