prospect hill orthohantavirus prospect hill orthohantavirus prospect hill orthohantavirus is a single-stranded, negative-sense hantaan-like zoonotic rna virus isolated from meadow voles and microtine and other cricetid rodents in the united states. it has a widespread distribution in pennsylvania, maryland, west virginia, minnesota and california. the overall risk of infection in humans is low. it was first isolated from a meadow vole found in prospect hill, maryland for which it is named. prospect hill orthohantavirus virus classification (unranked): virus realm: riboviria kingdom: orthornavirae phylum: negarnaviricota class: ellioviricetes order: bunyavirales family: hantaviridae genus: orthohantavirus species: prospect hill orthohantavirus member viruses bloodland lake virus (bllv) prospect hill virus (phv) synonyms prospect hill hantavirus prospect hill virus transmission transmission to humans is believed to occur through aerosolized inhalation of mouse excreta and possibly through fomite contamination.