Which single organism accounts for the largest proportion of cases of acute pelvic inflammatory disease worldwide?
- A Chlamydia trachomatis ✓
- B Neisseria gonorrhoeae
- C Mycoplasma genitalium
- D Bacteroides fragilis
Correct answer: A. Chlamydia trachomatis
Explanation
Chlamydia trachomatis is the most frequently identified pathogen in PID globally and is notorious for causing subclinical, 'silent' salpingitis that presents later as tubal infertility or ectopic pregnancy. Gonorrhoea produces a more acute, purulent presentation but is less prevalent than chlamydia in most populations. Anaerobes such as Bacteroides are usually co-pathogens in polymicrobial upper tract infection rather than the initiating agent.
Reference: Williams Gynecology, 3rd ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.