The presence of Gram-negative diplococci in pus from an inflamed penis is diagnostic for infection by
A) human herpesvirus 2.
B) Treponema pallidum.
C) Neisseria gonorrhoeae.
D) Chlamydia trachomatis.
E) Mycoplasma hominis.

Question

Quizplus · Accepted Answer

The presence of Gram-negative diplococci in pus from an inflamed penis is characteristic of Neisseria gonorrhoeae infection. Human herpesvirus 2 causes genital herpes, which presents as painful blisters on the genitalia. Treponema pallidum is the causative agent of syphilis, which produces a painless genital ulcer. Chlamydia trachomatis and Mycoplasma hominis are both potential causes of urethritis, but they do not typically present as pus-filled lesions on the penis.

The Presence of Gram-Negative Diplococci in Pus from an Inflamed