Delta infection: intrafamily spreading.
D000293:Adolescent; D000328:Adult; D000368:Aged; D000914:Antibodies, Viral / Q000032:analysis; D002648:Child; D002675:Child, Preschool; D003673:Defective Viruses; D006511:Hepatitis B Antigens / Q000276:immunology; D006514:Hepatitis B Surface Antigens / Q000032:analysis; D006518:Hepatitis Viruses; D035923:Hepatitis delta Antigens; D006525:Hepatitis, Viral, Human / Q000235:genetics* / Q000635:transmission; D006801:Humans; D007223:Infant; D008875:Middle Aged
D000914:Antibodies, Viral; D006511:Hepatitis B Antigens; D006514:Hepatitis B Surface Antigens; D035923:Hepatitis delta Antigens