kestaga helikaalne üheahelaline RNA‑viirus, nt. lümfotsütaarse koriomeningiidi tekitajaviirus, any of a family (Arenaviridae) of single-stranded RNA viruses having a dense outer lipid envelope covered by numerous club-shaped projections and including the causative agents of lymphocytic choriome, any of various RNA-containing viruses of the family Arenaviridae, usu. transmitted to humans by contact with excreta of infected rodents