Johns Hopkins ABX Guide
Haemophilus ducreyi (Chancroid)
MICROBIOLOGY
- Fastidious, facultative anaerobic Gram-negative coccobacillus [Fig 1].
- Requires hemin (X factor) for growth but no requirement for NAD (V factor)
- Three types of nutritionally enriched media are needed for growth.
- Organism co-localizes with neutrophils and fibrin at the ulcerative stage of the disease.
- Specific molecular techniques were used to identify the likely geographic origin of strains.
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Last updated: March 5, 2022
Citation
Tuddenham, Susan, and Noreen A Hynes. "Haemophilus Ducreyi (Chancroid)." Johns Hopkins ABX Guide, The Johns Hopkins University, 2022. Johns Hopkins Guides, www.hopkinsguides.com/hopkins/view/Johns_Hopkins_ABX_Guide/540114/all/Haemophilus_ducreyi__Chancroid_.
Tuddenham S, Hynes NA. Haemophilus ducreyi (Chancroid). Johns Hopkins ABX Guide. The Johns Hopkins University; 2022. https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_ABX_Guide/540114/all/Haemophilus_ducreyi__Chancroid_. Accessed October 28, 2025.
Tuddenham, S., & Hynes, N. A. (2022). Haemophilus ducreyi (Chancroid). In Johns Hopkins ABX Guide. The Johns Hopkins University. https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_ABX_Guide/540114/all/Haemophilus_ducreyi__Chancroid_
Tuddenham S, Hynes NA. Haemophilus Ducreyi (Chancroid) [Internet]. In: Johns Hopkins ABX Guide. The Johns Hopkins University; 2022. [cited 2025 October 28]. Available from: https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_ABX_Guide/540114/all/Haemophilus_ducreyi__Chancroid_.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC
T1 - Haemophilus ducreyi (Chancroid)
ID - 540114
A1 - Tuddenham,Susan,M.D.
AU - Hynes,Noreen,M.D., M.P.H., D.T.M.&H.
Y1 - 2022/03/05/
BT - Johns Hopkins ABX Guide
UR - https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_ABX_Guide/540114/all/Haemophilus_ducreyi__Chancroid_
PB - The Johns Hopkins University
DB - Johns Hopkins Guides
DP - Unbound Medicine
ER -
