a retrovirus closely related to simian immunodeficiency virus (SIV) and less closely related to HIV-1. HIV-2 is found primarily in West Africa. Symptoms of HIV-2 infection are similar to those of HIV-1 but are typically milder and take longer to develop. There are 5 known types of HIV-2 (A through E). (hiv-2)
HUMAN IMMUNODEFICIENCY VIRUS 2
Meaning of HUMAN IMMUNODEFICIENCY VIRUS 2 in English
AIDS English Glossary. Английский словарь СПИДа. 2012