Pennsylvania hospital late making AIDS discovery; six patients infected.
D000163:Acquired Immunodeficiency Syndrome / Q000209:etiology / Q000635:transmission*; D001771:Blood Banks / Q000592:standards*; D001782:Blood Donors; D003140:Communicable Disease Control / Q000331:legislation & jurisprudence; D006746:Hospital Bed Capacity, 500 and over; D006801:Humans; D010414:Pennsylvania; D013997:Time Factors; D065227:Transfusion Reaction