Vaccine declined, AIDS risk feared.
D000163:Acquired Immunodeficiency Syndrome / Q000209:etiology / Q000517:prevention & control*; D001291:Attitude of Health Personnel; D006509:Hepatitis B / Q000517:prevention & control*; D006787:Hospitals, Veterans; D006801:Humans; D014481:United States; D014612:Vaccines / Q000009:adverse effects