[Variability of human immunodeficiency virus type 1].

Abstract excerpt

The variability of human immunodeficiency virus type 1 (HIV-1) is very high. To date, three distinct lineages of HIVs, type 1 group M, type 1 group O and type 2 are described, suggesting at least three different zoonotic infections. HIV-1 group M is responsible for the global epidemic of AIDS. At least ten subtypes of HIV-1 group M, labelled A through J, have been discovered. Viral sequences from both the gag and...

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