Chlamydia treatment failure after repeat courses of azithromycin and doxycycline

A case is presented of a 22 year-old woman with genital Chlamydia trachomatis infection, which persisted for 8 months despite treatment with four 1g doses of azithromycin and both a 7-day and 14-day course of doxycycline. She denied any sexual contact during this time. Tests for other infections including extragenital sites were negative.