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The new epidemiological bulletin from the State Department of Health (Sesacre) shows that, in one year, the number of Oropouche cases grew by more than 700%.
In 2023, 60 cases of the disease were recorded in eight municipalities in the state. The following year, 481 cases were confirmed in 21 municipalities, with only the city of Santa Rosa without notifications. One death was recorded in 2024 due to the disease.
Source: Sesacre
Oropouche is a disease caused by an arbovirus (virus transmitted by arthropods) of the genus Orthobunyavirus, of the Peribunyaviridae family. Orthobunyavirus oropoucheense (OROV) was isolated for the first time in Brazil in 1960, from a blood sample from a common sloth (Bradypus tridactylus) captured during the construction of the Belém-Brasília highway. Since then, isolated cases and outbreaks have been reported in Brazil, mainly in the states of the Amazon region. Cases and outbreaks have also been recorded in other countries in Central and South America.
Transmission of Oropouche occurs mainly through the insect known as Culicoides paraensis (maruim). After biting an infected person or animal, the virus remains in the insect for a few days. When the insect bites a healthy person, it can transmit the virus.
Emergency situation due to arboviruses
Acre declared a state of public health emergency on January 8th due to the arboviruses dengue, chikungunya and zika. Between epidemiological weeks 49 of 2024 and 1 of 2025, it is estimated that there were 810 cases of dengue in the state, according to data from Infodengue.
