This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Genital Tract Infections (Too hot to handle!), Subject name: Gynaecology & Obstetrics
A young female presented with vaginal discharge. Endocervical biopsy revealed chlamydial antigen. Treatment given should be 
Select and explain. 
A. Doxycycline + metronidazole, B. Azithromycin + contact tracing, C. Fluconazole + Azithromycin, D. Ampicillin + Probenecid
B: Azithromycin + contact tracing
Answer: B: Azithromycin + contact tracing 
Explanation: Treatment of Chlamydial infection: Azithromycin 1 g orally as a single doseor Doxycycline (100 mg bid for 7 days) Contact tracing, avoidance of sex or barrier contraceptive is necessary to avoid recurrence. Note: out of the given options, both azithromycin and doxycycline (not metronidazole) can be used for treatment of chlamydia, however since contact tracing is equally impoant, option 2 is preferred. Chlamydia infection :most common cause of tubal block in India