Flexal mammarenavirus (also known as the Flexal virus or FLEV, and previously known by the laboratory code BeAn 293022) is a mammarenavirus: an arenavirus with a mammalian host.[1] It was first found in semiaquatic rodents of the genus Oryzomys in tropical forest in the Pará area of Brazil.
It is a member of Clade A of the Tacaribe (or "New World") serocomplex of the family Arenaviridae.[2] Laboratory workers infected by Flexal virus have exhibited febrile illness.[2] Flexal virus is listed as a UN 2814 Category A infectious substance.[3]