Evading bad blood.
D001782:Blood Donors; D001803:Blood Transfusion / Q000592:standards*; D005260:Female; D015658:HIV Infections / Q000209:etiology / Q000517:prevention & control; D006509:Hepatitis B / Q000209:etiology / Q000517:prevention & control; D006526:Hepatitis C / Q000209:etiology / Q000517:prevention & control; D006801:Humans; D008297:Male; D013019:South Africa; D013587:Syphilis / Q000209:etiology / Q000517:prevention & control; D065227:Transfusion Reaction