Kissing and Kaposi's sarcoma.
D006566:Herpesviridae Infections / Q000453:epidemiology / Q000635:transmission*; D019288:Herpesvirus 8, Human / Q000302:isolation & purification*; D018451:Homosexuality, Male; D006801:Humans; D008297:Male; D009055:Mouth / Q000821:virology*; D012463:Saliva / Q000821:virology*; D012514:Sarcoma, Kaposi / Q000821:virology*; D012725:Sexual Behavior; D012878:Skin Neoplasms / Q000821:virology*; D014412:Tumor Virus Infections / Q000453:epidemiology / Q000635:transmission*; D014861:Washington / Q000453:epidemiology