Is discussion of induced persistent states of Ct relevant in the case of the 17-year-old female with complex pelvic abscess reported by Dr O'Mahony et al. 1 Here, it is possible that when 'asymptomatic' chlamydia infection was identified in the local contraception clinic, endometrial involvement may have already developed. Intercurrent use of beta-lactam antibiotics (not identified) and/or use of stat azithromycin might have induced a persistent state of chlamydia within the endometrium, with potential reactivation following surgical instrumentation. 6 The presentation of these two comprehensive case history reports is appreciated. In addition to hypothetical issues of adverse therapeutic interaction in such patients, genitourinary physicians are reminded of the importance of working in close collaboration with our colleagues in ophthalmology and gynaecology.