<prompt> A young female presented with vaginal discharge. Endocervical biopsy revealed chlamydial antigen. Treatment given should beDoxycycline metronidazoleAzithromycin contact tracingFluconazole AzithromycinAmpicillin Probenecid  <response>: 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 