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What is A patient's history notes a documented severe reaction to a penicillin. What other antibiotic is likely to cross-react and so should be avoided in this patient? and explain in detail?
Unless there are no reasonable alternatives, cephalosporins should be avoided for patients with prior severe responses to penicillins because of their cross- reactivity. None of the other drugs or drug groups listed here cross-react in penicillin-sensitive patients.