Protecting health care workers and patients from hepatitis B.
D006509:Hepatitis B / Q000517:prevention & control / Q000635:transmission*; D006801:Humans; D007114:Immunization; D017758:Infectious Disease Transmission, Patient-to-Professional / Q000517:prevention & control*; D017757:Infectious Disease Transmission, Professional-to-Patient / Q000517:prevention & control*