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Brazil expands Wolbachia mosquito releases

Updated 3 times since CLSTR started tracking revisions of this situation.

What changed

2026-07-29 03:44 UTC → 2026-07-29 03:44 UTC · added removed

Brazil’s health regulator Anvisa approved commercial production of Wolbachia‑modified male Aedes aegypti mosquitoes at a new Flyttr factory in Campinas. The facility can Campinas, enabling weekly output of millions of insects weekly, complementing the existing Wolbito partnership with the World Mosquito Program and Fiocruz. Following the approval, insects. The first field releases were launched in São José do Rio Preto Preto, where Fiocruz and local health teams began field releases in weekly drops of Wolbachia‑infected males across ten high‑risk neighborhoods. Weekly releases started priority neighborhoods in September‑October 2026 and are planned for a 26‑week period, targeting the city’s dengue, Zika and chikungunya burden after 2026, following a severe 2025 epidemic and more than 4,000 cases in early 2026. mapping of recent case concentrations. The program pairs mosquito releases 26‑week programme is coupled with community education to improve acceptance and standard complement existing vector‑control actions. In late July 2026, 2026 the municipality of Curitiba launched started its own 26‑week Wolbachia release campaign, deploying insects batches at Praça Professora Marli Queiroz de Azevedo. Local officials Azevedo in the Sítio Cercado district. The city reported a 94 % decline in dengue cases between January and July 2026 relative to the previous year, 2026, attributing the drop to integrated measures that now include Wolbachia. a combination of clean‑up drives and the new Wolbachia programme. The effort initiative involves partnerships with Wolbito do Brasil, the Instituto de Biologia Molecular do Paraná and the World Mosquito Program, drawing on experiences from mirroring efforts in other Brazilian cities such as Niterói and Campo Grande. Both cities rely on Wolbachia’s natural ability to block virus replication without genetic modification, aiming continue to sustain long‑term reductions in arbovirus transmission while maintaining public safety. monitor mosquito populations and disease incidence as the releases progress.

Versions

  1. 2026-07-29 03:44 UTC Brazil expands Wolbachia mosquito releases
  2. 2026-07-29 03:44 UTC Brazil expands Wolbachia mosquito releases
  3. 2026-07-29 03:43 UTC Brazil expands Wolbachia mosquito releases
  4. 2026-07-26 14:39 UTC Brazil Wolbachia mosquito program

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