saaremaa virus saaremaa virus saaremaa virus is a single-stranded, negative-sense, rna virus orthohantavirus that causes a milder form of hantavirus hemorrhagic fever with renal syndrome. it is a member virus of dobrava-belgrade orthohantavirus. it was first isolated from a striped field mouse in slovakia. saaremaa virus virus classification (unranked): virus realm: riboviria kingdom: orthornavirae phylum: negarnaviricota class: ellioviricetes order: bunyavirales family: hantaviridae genus: orthohantavirus species: dobrava-belgrade orthohantavirus virus: saaremaa virus