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Which bacterium causes granuloma inguinale?
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sexually transmitted disease
Scanning electron micrograph of the spirochete Treponema pallidum attached to testicular cell membranes.
Granuloma inguinale is a sexually transmitted disease caused by the bacterium Calymmatobacterium granulomatis.12
This pathogen is characterized by the presence of encapsulated bacilli known as Donovan bodies, which are typically identified in biopsy material or lesion smears. The infection primarily manifests as painless papules that progress into deep, easily bleeding ulcers on the genitals, groin, or thighs. It is treated using antibiotics, such as streptomycin.12