A nurse in a health clinic is assisting in the care of a client diagnosed with chlamydia. The client was prescribed azithromycin 1 g PO once. Which of the following allergy findings in the client's history should the nurse report to the provider?

Choice A reason: Tetracycline allergy doesn’t cross-react with azithromycin, a macrolide. They’re distinct classes, so this isn’t a concern for chlamydia treatment safety.Choice B reason: Sulfonamide allergy is unrelated to azithromycin’s macrolide structure. No cross-sensitivity exists, making this irrelevant for reporting in this case.Choice C reason: Azithromycin is a macrolide; allergy to this class risks anaphylaxis. Reporting ensures safe alternative prescribing for chlamydia, a critical safety step.Choice D reason: Penicillin allergy doesn’t affect azithromycin use; they’re unrelated structurally. This doesn’t require reporting, as no cross-reaction occurs here.