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Virus classification Edit this classification
(unranked): Virus
Realm: Riboviria
Kingdom: Pararnavirae
Phylum: Artverviricota
Class: Revtraviricetes
Order: Ortervirales
Family: Retroviridae
Subfamily: Orthoretrovirinae

Orthoretrovirinae is a subfamily of viruses belonging to Retroviridae, a family of enveloped viruses that replicate in a host cell through the process of reverse transcription.[1] The subfamily currently includes six genera, of which Lentivirus contains the human immunodeficiency virus (HIV). These viruses cause a variety of tumors, malignancies and immune deficiency disease in humans, other mammals and birds. A few, like Simian immunodeficiency virus (SIV), apparently cause no disease in their natural hosts.[citation needed]


  1. ^ Coffin, John; Blomberg, Jonas; Fan, Hung; Gifford, Robert; Hatziioannou, Theodora; Lindemann, Dirk; Mayer, Jens; Stoye, Jonathan; Tristem, Michael; Johnson, Welkin (2021-12-23). "ICTV Virus Taxonomy Profile: Retroviridae 2021". The Journal of General Virology. 102 (12): 001712. doi:10.1099/jgv.0.001712. ISSN 0022-1317. PMC 8744268. PMID 34939563.