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What is Common causes of infertility are:a) Chlamydiab) Gonorroheac) Mycoplasmad) Pneumococcus and explain in detail?
PID resulting in salpingitis is an important cause of infertility.
Infertility from PID can occur due to following organisms:
a. Chlamydia 
b. Gonorrhea 
c. Tuberculosis 
d. Mycoplasma (Specifically ureoplasma) 
Certain Infections cause Intrauterine synechiae or asherman syndrome thus leading to infertility like:
e. Schistosoma