You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Which of the following is the causative organism for Chancroid? and explain in detail?
Haemophilus ducreyi, a gram-negative, facultative anaerobic coccobacillus is the causative agent of Chancroid. Painful, soft ulcers with ragged undermined margins develop 1-2 weeks after inoculation (usually seen in prepuce and frenulum in men and vulva, cervix, and perianal area in women). Must Know: Chancroid facilitates the transmission of HIV. Azithromycin and Ceftriaxone are recommended as single-dose treatment. It is a sexually transmitted disease, but nonsexual transmission has been repoed recently. Ref: Lautenschlager S. (2012). Chapter 202. Chancroid. In L.A. Goldsmith, S.I. Katz, B.A. Gilchrest, A.S. Paller, D.J. Leffell, N.A. Dallas (Eds), Fitzpatrick's Dermatology in General Medicine, 8e.