In a 35 year old man which is most likely organism causing infection of epididymis-
Chlamydial urethritis may be followed by acute epididymitis, but this condition is rare, generally occurring in sexually active patients <35 years of age; in older men, epididymitis is usually associated with gram-negative bacterial infection and/or instrumentation procedures. It is estimated that 50-70% of cases of acute epididymitis are caused by C. trachomatis . The condition usually presents as unilateral scrotal pain with tenderness, swelling, and fever in a young man, often occurring in association with chlamydial urethritis. The illness may be mild enough to treat with oral antibiotics. (Harrison's Principles of internal medicine,20 th edition, page 1423)
E.coli
Gonococci
Chlamydia
Ureaplasma ureolyticum
Infection