Guide to Writing FAQs - SPS

Cephalosporins and PCN Allergy. Cross reactivity is overestimated, with about 10% cross reactivity with first generation cephalosporin, and only 1-3% with third generation cephalosporin. Overall rxn rate in +PCN PST patients 3%! Often due to similar (-lactam ring; Less allergenic esp. wrt Type 1 rxns ................
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