“Brazil reports a drop of approximately 70% in probable cases of dengue in 2026, compared to the same period in 2025. As of September 26, 470.5 thousand probable cases were counted in the country, up from 1.5 million in the same period of the previous year.

There was also a reduction in the chikungunya and Zika records. 67,902 cases of chikungunya were counted, 43% less than the 118,885 recorded in 2025. For Zika, there were 2,141 cases, 35% below 3,724 cases recorded in the same period a year earlier.”

From Ministério da Saúde.