title: Searching for the epidemic's origins.
abstract: Theories about the origin of AIDS all suffer from a dearth of data. For more than a decade, researchers have recognized the close genetic links between SIV from sooty mangabeys and HIV-2, a type of the virus that is mostly confined to west African countries, but to date, there are scant data that closely link HIV-1, the predominant human AIDS virus, to SIVs found in primates.
authors.forename: J
authors.initials: J
authors.lastname: Cohen
mesh_terms: D017954:Africa South of the Sahara; D000818:Animals; D018420:Ape Diseases / Q000821:virology; D002478:Cells, Cultured / Q000821:virology; D016665:Cercocebus atys / Q000821:virology; D019143:Evolution, Molecular; D015658:HIV Infections / Q000821:virology*; D015497:HIV-1 / Q000145:classification / Q000235:genetics / Q000302:isolation & purification; D015498:HIV-2 / Q000145:classification / Q000235:genetics / Q000302:isolation & purification; D006801:Humans; D019974:Pan paniscus / Q000821:virology*; D002679:Pan troglodytes / Q000821:virology*; D011055:Poliovirus Vaccine, Oral; D016097:Simian Acquired Immunodeficiency Syndrome / Q000821:virology*; D015302:Simian Immunodeficiency Virus / Q000145:classification / Q000235:genetics / Q000302:isolation & purification
chemical_list: D011055:Poliovirus Vaccine, Oral