title: [Subtypes of human immunodeficiency virus 1:classification, the origin and circulation in Europe].
abstract: The modern classification of human immunodeficiency viruses of type 1 (HIV-1) is presented. The hypotheses concerning the origin of this virus are discussed. The data on the spread of the subtypes of HIV-1 in different countries of Western and Eastern Europe and in different risk groups are presented.
authors.affiliation: Ivanovsky Research Institute of Virology, Moscow, Russia.
authors.forename: E V
authors.initials: EV
authors.lastname: Kazennova
authors.forename: A F
authors.initials: AF
authors.lastname: Bobkov
mesh_terms: D005060:Europe / Q000453:epidemiology; D005260:Female; D015658:HIV Infections / Q000453:epidemiology* / Q000635:transmission*; D015497:HIV-1 / Q000145:classification*; D018451:Homosexuality, Male; D006801:Humans; D008297:Male; D011157:Population Dynamics; D012307:Risk Factors; D011477:Sex Work; D015819:Substance Abuse, Intravenous / Q000453:epidemiology