This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Genital Tract Infections (Too hot to handle!), Subject name: Gynaecology & Obstetrics
Actinomyces pelvic infection is most associated with? 
Select and explain. 
A. STDs, B. Unsafe aboions, C. Immuno - compromised patients, D. IUCD users.
D: IUCD users.
Answer: D: IUCD users. 
Explanation: Infection is caused by Actinomyces israelii, a grampositive anaerobe. It may be associated in IUCD users more with noncopper devices.