The Prokaryotes pp 3304-3330 | Cite as

The Genus Haemophilus

  • Susan K. Hoiseth


The genus Haemophilus is traditionally defined as being comprised of small, pleomorphic, Gram-negative rods (often coccobacilli) with growth requirements for one or more factors present in blood (NAD and/or hemin); hence the name Haemophilus (blood-loving). This is a diverse genus, comprised of both animal and human pathogens, as well as a number of species that are primarily commensals of the mucous membranes. The organisms are not free-living in nature.


Haemophilus Influenzae Human Isolate Chocolate Agar Brain Heart Infusion Agar Oral Flora 
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