Fil: Fernandes, Jorlan. Instituto Oswaldo Cruz. Laboratorio de Hantaviroses e Rickettsioses; Brasil.Fil: Oliveira, Renata Carvalho de. Instituto Oswaldo Cruz. Laboratorio de Hantaviroses e Rickettsioses; Brasil.Fil: Guterres, Alexandro. Instituto Oswaldo Cruz. Laboratorio de Hantaviroses e Rickettsioses; Brasil.Fil: de Carvalho Serra, Fabiana. Instituto Oswaldo Cruz. Laboratorio de Hantaviroses e Rickettsioses; Brasil.Fil: Bonvicino, Cibele Rodrigues. Instituto Nacional do Cancer; Brasil.Fil: D'Andrea, Paulo Sergio. Instituto Oswaldo Cruz. Laboratorio de Biologia e Parasitologia de Mamiferos Silvestres Reservatorios; Brasil.Fil: Cunha, Rivaldo Venâncio. Fundacao Oswaldo Cryz; Brasil.Fil: Levis, Silvana. ANLIS Dr.C.G.Malbrán. Instituto Nacional de Enfermedades Virales Humanas; Argentina.Fil: Lemos, Elba Regina Sampaio de. Instituto Oswaldo Cruz. Laboratorio de Hantaviroses e Rickettsioses; Brasil.Clade C, of the New World Arenaviruses, is composed of only the Latino and Oliveros viruses and, besides the geographic range of their rodent reservoirs, the distribution of these viruses has been restricted to Bolivia and Argentina. In this study, the genetic detection and phylogenetic analysis of the complete S segment sequences of sympatric arenaviruses from Brazil revealed a new geographic distribution of clade C arenaviruses, as well as the association of Oliveros virus with a new rodent reservoir.