: a gram-negative bacillus of the genus Haemophilus (H. ducreyi) that is the causative agent of chancroid
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“Ducrey's bacillus.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/Ducrey%27s%20bacillus. Accessed 24 May. 2025.
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