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Haemophilus ducreyi
Published online by Cambridge University Press: 02 January 2015
Extract
Chancroid, or soft chancre (ulcus molle), was first differentiated from syphilis by Bassereau in 1852. The causative organism, Haemophilus ducreyi, was first described by Ducrey in 1889, although he was unable to grow the organism in vitro. The first successful culture has been attributed to Petersen (1895). Haemophilus ducreyi has been clinically associated only with genital ulcer disease and direct inoculation infections. There is no difficulty accepting Haemophilus ducreyi as a legitimate clinical and taxonomic species because it is the sole human Haemophilus species with a requirement only for X factor as determined by the porphyrin test. The emergence of Haemophilus ducreyi strains resistant to multiple antibiotics has restricted efforts to curb the spread of this increasingly prevalent sexually transmitted disease.
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- Copyright © The Society for Healthcare Epidemiology of America 1985