Which statement about the effects of infection with Haemophilus ducreyi is true?

Infection with Haemophilus ducreyi is best known for causing painful ulcers, specifically chancroid, which is a sexually transmitted infection. The presence of painful genital ulcers is a hallmark of this infection, making the statement regarding the painful ulcers accurate.

Additionally, Haemophilus ducreyi infections are treatable with antibiotics, further supporting the assertion that it is treated with medication. Commonly prescribed antibiotics for this infection include azithromycin or ceftriaxone.

Both the presence of painful ulcers and the possibility of effective antibiotic treatment highlight the characteristics of an infection caused by this bacterium, making the combined answer encompassing both aspects the correct choice. This illustrates the significance of recognizing the clinical manifestations and treatment protocols for Haemophilus ducreyi in understanding infectious diseases.