The human immunodeficiency viruses (HIV) are two species of Lentivirus (a subgroup of retrovirus) that infect humans. Over time, they cause acquired immunodeficiency
2018. "The epidemiologyofHIV in Canada". CATIE. 2018. Archived from the original on 6 April 2020. Retrieved 18 January 2020. "Estimates ofHIV incidence
virus (HIV) is a retrovirus that attacks the immune system. It can be managed with treatment. Without treatment it can lead to a spectrum of conditions
HIV superinfection (also called HIV reinfection or SuperAIDS) is a condition in which a person with an established human immunodeficiency virus infection