title: Problems of protection against virus B hepatitis.
mesh_terms: D001803:Blood Transfusion; D003428:Cross Infection / Q000517:prevention & control*; D006509:Hepatitis B / Q000517:prevention & control*; D006515:Hepatitis B virus / Q000276:immunology; D006778:Hospitals, Psychiatric; D006801:Humans; D010564:Personnel, Hospital; D006435:Renal Dialysis; D006113:United Kingdom