Haemophilus ducreyi
Haemophilus ducreyi
Haemophilus ducreyi (pronounced: hee-muh-fil-uhs doo-krey-ee) is a gram-negative bacteria that is responsible for the sexually transmitted infection known as chancroid. The etymology of the term is derived from the Greek words "haima" meaning blood, "philos" meaning loving, and "ducreyi" named after Auguste Ducrey, a French dermatologist who first isolated the bacterium in 1889.
Description
Haemophilus ducreyi is a small, rod-shaped, aerobic organism. It is non-motile and does not form spores. The bacterium is characterized by its ability to produce a severe form of genital ulceration known as chancroid or soft chancre. This condition is highly contagious and is primarily transmitted through sexual contact.
Pathogenesis
The pathogenesis of Haemophilus ducreyi involves the bacterium entering the body through minor breaks in the skin or mucous membranes. Once inside, it multiplies and produces a toxin that causes tissue damage, leading to the formation of a painful ulcer known as a chancroid.
Diagnosis
Diagnosis of an infection caused by Haemophilus ducreyi typically involves the examination of a sample from the ulcer under a microscope. The bacterium can be identified by its characteristic appearance and by the use of specific culture techniques.
Treatment
Treatment for Haemophilus ducreyi infection typically involves the use of antibiotics, such as azithromycin, ceftriaxone, or erythromycin. It is important to note that sexual partners of infected individuals should also be treated to prevent the spread of the infection.
Prevention
Prevention of Haemophilus ducreyi infection primarily involves practicing safe sex, including the use of condoms. Regular testing for sexually transmitted infections can also help in early detection and treatment.
External links
- Medical encyclopedia article on Haemophilus ducreyi
- Wikipedia's article - Haemophilus ducreyi
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