title: The puzzle of HIV-1 subtypes in Africa.
authors.forename: W
authors.initials: W
authors.lastname: Janssens
authors.forename: A
authors.initials: A
authors.lastname: Buvé
authors.forename: J N
authors.initials: JN
authors.lastname: Nkengasong
mesh_terms: D000349:Africa / Q000453:epidemiology; D017954:Africa South of the Sahara / Q000453:epidemiology; D014644:Genetic Variation; D015658:HIV Infections / Q000175:diagnosis / Q000453:epidemiology / Q000517:prevention & control / Q000821:virology*; D015497:HIV-1 / Q000145:classification* / Q000235:genetics; D006801:Humans