Chlamydia trachomatis in pelvic inflammatory disease.

C. trachomatis seems to be an important causative organism of pelvic inflammatory disease (PID) as C. trachomatis antigen and/or antibody was found in 234 (69.85%) of 335 patients clinically diagnosed to have PID. Antigen was detected in the lower genital tract of 118 (35.22%) patients whereas IgG antibody was present in 188 (56.11%), of whom 89 (47.34%) had a high titre. Repeat testing of sera of 37 patients showed a rise in antibody titre in 18 (40%). As the success rate of therapy for PID with doxycycline was found to be 80 per cent, early diagnosis and treatment may be recommended to prevent further complications of PID.