A 45-year-old man from Guyana presents with a painful genital ulcer. Gram stain of the ulcer discharge shows Gram-negative coccobacilli in a 'school o...

Question

A 45-year-old man from Guyana presents with a painful genital ulcer. Gram stain of the ulcer discharge shows Gram-negative coccobacilli in a 'school of fish' pattern (chains of organisms in parallel rows). What is the organism?

Accepted Answer

Haemophilus ducreyi

Answer

Treponema pallidum

Answer

Klebsiella granulomatis

Answer

Chlamydia trachomatis

Answer

Neisseria gonorrhoeae

uk-dtmh MCQ (SBA): Chancroid Gram Stain

A 45-year-old man from Guyana presents with a painful genital ulcer. Gram stain of the ulcer discharge shows Gram-negative coccobacilli in a 'school of fish' pattern (chains of organisms in parallel rows). What is the organism?