What is the recommended single-dose treatment for chlamydia?

• A. Ceftriaxone 250 mg IV
• B. Azithromycin 1 gram PO
• C. Metronidazole 500 mg PO
• D. Doxycycline 100 mg PO for 7 days

Answer: (B)

The recommended single-dose treatment for chlamydia is Azithromycin 1 gram PO. This choice is supported by the Centers for Disease Control and Prevention (CDC) guidelines, which recommend Azithromycin as an effective option for treating uncomplicated chlamydial infections. The single-dose formulation simplifies adherence, ensuring that patients have a straightforward treatment course. This is particularly beneficial in managing sexually transmitted infections, as it increases the likelihood that individuals will complete their therapy as prescribed.

In contrast, other options listed involve different dosages or durations that are not classified as single doses or are not appropriate first-line treatments for chlamydia. For example, Ceftriaxone is typically used for gonorrhea treatment rather than chlamydia, while Metronidazole is not indicated for chlamydia and is more commonly used for bacterial vaginosis and trichomoniasis. Doxycycline, although effective for chlamydia, is prescribed as a longer treatment course over 7 days, which does not meet the single-dose criteria needed for this question.