Β-lactam antibiotic reactions to any β-lactam antibiotic may occur in up to 10% of patients receiving that agent (a small fraction of which are truly IgE-mediated allergic reactions, see amoxicillin rash). Anaphylaxis will occur in approximately 0.01% of patients. There is perhaps a 5%-10% cross-sensitivity between penicillin-derivatives, cephalosporins, and carbapenems; but this figure has been challenged by various investigators. Nevertheless, the risk of cross-reactivity is sufficient to warrant the contraindication of all β-lactam antibiotics in patients with a history of severe allergic reactions (urticaria, anaphylaxis, interstitial nephritis) to any β-lactam antibiotic. A Jarisch–Herxheimer reaction may occur after initial treatment of a spirochetal
Antibiotic prophylaxis background, training, nurse and pharmacist influences, medication supply, and logistics. The American Heart Association (AHA) now recommends antibiotic prophylaxis for very few patients since only a small number of cases of endocarditis might be prevented by this procedure. Antibiotic prophylaxis in domestic animal feed mixes has been employed in America since at least 1970. Over time, the use of antibiotics for growth promotion purposes in livestock was discovered. In 1986, some European countries banned the use of antibiotics because of research they found that linked antibiotic use in livestock and drug resistant bacteria in humans. The European Union regulated in