A retrospective analysis was made of the records of 71 women with clinically diagnosed PID presenting to the Department of Genito Urinary Medicine in Doncaster. Twenty-nine of the 71 women (40.8%) showed evidence of active chlamydial infection. Six women (8.5%) had infection with N. gonorrhoeae. Of the 45 male partners investigated, 16 (35.6%) had recoverable C. trachomatis in the anterior urethra. Only four (8.9%) had gonorrhea.