However, genuine penicillin allergies, where our immune systems mistake penicillin for an attacker, do occur rarely and can be very dangerous.

但是，真正的青霉素过敏（我们的免疫系统将青霉素误认为是攻击者）确实很少发生，并且非常危险。

Even if you do have a penicillin allergy, your immune cells that react to the drug may lose their ability to recognize it.

即使您确实对青霉素过敏，对药物起反应的免疫细胞也可能会失去识别它的能力。