1.Years earlier, Paxton had experienced severe allergic reactions to the antibiotics penicillin and Keflex.
此前几年，帕克斯顿曾经因为使用抗生素盘尼西林和基弗莱克斯而发生过严重的过敏反应。
2.If any allergic reaction to Keflex occurs, the drug should be discontinued and the patient treated with the usual agents.
如果出现对头抱菌素IV的过敏反应，应停药，并用常规药物治疗患者。