A 33-year-old MSM with a recent rectal chlamydia infection seeks STI prevention. He is eligible for doxy‑PEP per CDC. What dosing is correct?...

Question

A 33-year-old MSM with a recent rectal chlamydia infection seeks STI prevention. He is eligible for doxy‑PEP per CDC. What dosing is correct?

Accepted Answer

Doxycycline 200 mg once within 72 hours after sex

Answer

Doxycycline 100 mg once within 24 hours after sex

Answer

Doxycycline 100 mg twice daily for 7 days after sex

Answer

Doxycycline 200 mg daily for 7 days after sex

Answer

Doxycycline 50 mg once within 24 hours after sex

infectious diseases MCQ (SBA): CDC Clinical Guideline (2024): Doxycycline Postexposure Prophylaxis for STIs