Most common cause of Non-gonococcal urethritis is: (A) Meningococci, (B) Escherichia coli, (C) Chlamydia trachomatis, (D) Mycoplasma
Answer is C. The most common cause of non-gonococcal urethritis is C.trachomatis. Other common organisms are ureaplasma ureolyticum and Mycoplasma hominis. Ref: Ananthanarayan and Paniker&;s Textbook of Microbiology, 9th edition; pg no: 234