In men with rectal chlamydia, 7-d doxycycline increased microbiologic cure at 4 wk vs. 1-dose azithromycin.

Area of Science:

• Infectious Diseases
• Public Health
• Microbiology

Background:

• Rectal Chlamydia trachomatis is a common sexually transmitted infection.
• Asymptomatic infections are prevalent and can lead to complications if untreated.
• Effective treatment is crucial for preventing transmission and sequelae.

Purpose of the Study:

• To compare the efficacy of azithromycin versus doxycycline for treating asymptomatic rectal Chlamydia trachomatis.
• To evaluate cure rates and potential side effects of each antibiotic.

Main Methods:

• A randomized controlled trial was conducted.
• Participants with asymptomatic rectal Chlamydia trachomatis were assigned to receive either azithromycin or doxycycline.
• Test-of-cure was performed after treatment.

Main Results:

• Both azithromycin and doxycycline achieved high microbiological cure rates.
• No significant difference in efficacy was observed between the two antibiotics.
• Adverse events were generally mild and comparable between groups.

Conclusions:

• Azithromycin and doxycycline are both effective treatments for asymptomatic rectal Chlamydia trachomatis.
• The choice of antibiotic can be based on individual patient factors and local resistance patterns.