.Attribute Medication, Posted online: 18 September 2024 doi:10.1038/ s41591-024-03300-3Genomic and epidemiologic studies revealed that an unfamiliar reassortant viral lineage of the Oropouche virus, which has been flowing in the western Amazon location of Brazil for about a many years, is actually connected with the recent individual break outs between 2022 and 2024.