H.A.A. in drug addicts.
D000367:Age Factors; D000906:Antibodies / Q000032:analysis*; D005006:Ethnicity; D005260:Female; D006385:Hemagglutination Inhibition Tests; D006506:Hepatitis A / Q000139:chemically induced; D006511:Hepatitis B Antigens; D006515:Hepatitis B virus / Q000276:immunology*; D006801:Humans; D005779:Immunodiffusion; D007275:Injections, Intravenous; D008297:Male; D009339:Needles; D044469:Racial Groups; D019966:Substance-Related Disorders / Q000276:immunology*
D000906:Antibodies; D006511:Hepatitis B Antigens