Hepatitis B -- its prevention by vaccine.
D006509:Hepatitis B / Q000517:prevention & control*; D006514:Hepatitis B Surface Antigens / Q000276:immunology; D006515:Hepatitis B virus / Q000276:immunology*; D006801:Humans; D014611:Vaccination; D014765:Viral Vaccines
D006514:Hepatitis B Surface Antigens; D014765:Viral Vaccines