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Haemophilus ducreyi
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The page below is a sample from the LabCE course
Sexually Transmitted Bacterial Infections (by ASCLS)
. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.
Learn more about Sexually Transmitted Bacterial Infections (by ASCLS) (online CE course)
Haemophilus ducreyi
Gram negative bacterium in the
Haemophilus
family (includes
Haemophilus influenzae)
Similar to other
Haemophilus species:
requires complex nutrients not found in sheep blood agar
It grows in presence of hemin (X factor) but not NAD (V factor)
H. ducreyi
infections are uncommon in the U.S. but small outbreaks have occurred
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