el moro canyon orthohantavirus el moro canyon orthohantavirus el moro canyon orthohantavirus is a single-stranded, negative sense rna virus of the genus orthohantavirus. it is a causative agent of hantavirus pulmonary syndrome. el moro canyon orthohantavirus virus classification (unranked): virus realm: riboviria kingdom: orthornavirae phylum: negarnaviricota class: ellioviricetes order: bunyavirales family: hantaviridae genus: orthohantavirus species: el moro canyon orthohantavirus strains carrizal virus el moro canyon virus huitzilac virus synonyms el moro canyon hantavirus el moro canyon virus natural reservoir el moro canyon virus was isolated from western harvest mice (reithrodontomys megalotis), in el moro canyon in southeastern colorado in 1995. carrizal virus and huitzilac virus, two additional strains, were first identified in mexican wild rodents located in morelos and guerrero, mexico.