(Unranked): Virus
Realm: Riboviria
Regnum: Pararnavirae
Phylum: Artverviricota
Classis: Revtraviricetes
Ordo: Ortervirales
Familia: Retroviridae
Subfamilia: Orthoretrovirinae
Genus: Lentivirus
Species: Human immunodeficiency virus 2
Human immunodeficiency virus 2 (HIV-2)