Sorriso reports dengue and chikungunya cases amid mosquito surveillance

Health authorities in Sorriso, Brazil, have released updated data regarding the presence of Aedes aegypti mosquitoes and the incidence of arboviruses. Environmental Health Surveillance reports that 43% of samples collected from 567 ovitraps tested positive for the mosquito, which transmits dengue, zika, and chikungunya. The neighborhoods of Rota do Sol, Centro Sul, Green Park, Jardim América, and Parque Universitário have been identified as high-risk areas for mosquito breeding.

Between January 1 and August 25, 2026, the Municipal Health Secretariat (Semsa) recorded 64 cases of dengue and 25 cases of chikungunya. No cases of zika virus were confirmed, though two suspected cases were investigated and dismissed. Dengue notifications peaked in January and July, while chikungunya cases were most frequent in February.

Local officials noted that while the percentage of positive mosquito eggs has decreased compared to March, urban issues such as irregular sewage disposal and debris accumulation in storm drains continue to facilitate breeding. Authorities have also warned residents against using specialized mosquito traps as decorative plant pots, as this interferes with surveillance efforts.