title: Clinical trial of vaccine for type B hepatitis to begin next month.
mesh_terms: D006509:Hepatitis B / Q000517:prevention & control* / Q000635:transmission; D006515:Hepatitis B virus / Q000276:immunology*; D006716:Homosexuality; D006801:Humans; D008297:Male; D012306:Risk; D012737:Sex Factors; D012749:Sexually Transmitted Diseases; D014765:Viral Vaccines / Q000627:therapeutic use*
chemical_list: D014765:Viral Vaccines