لخّصلي

The genus Haemophilus contains significant genetic diversity.Species of the genus Haemophilus require protoporphyrin IX (a metabolic intermediate of the hemin biosynthetic pathway), Epidemiology As presented in Table 1, except for Haemophilus ducreyi, Haemophilus spp.referred to as X factor and V factor, nicotine adenine dinucleotide (NAD), or nicotine adenine dinucleotide phosphate (NADP) for in vitro growth.

The genus Haemophilus contains significant genetic diversity. Members of the genus are small,
nonmotile, pleomorphic gram-negative bacilli.
referred to as X factor and V factor, nicotine adenine dinucleotide (NAD), or nicotine adenine
dinucleotide phosphate (NADP) for in vitro growth.

The cells are typically coccobacillary or short rods. Species of the genus Haemophilus require
protoporphyrin IX (a metabolic intermediate of the hemin biosynthetic pathway),
Epidemiology
As presented in Table 1, except for Haemophilus ducreyi, Haemophilus spp. normally inhabit the
upper respiratory tract of hum
Asymptomatic colonization with Haemophilus influenzae type b is rare. Although H. ducreyi is only
found in humans,
the organism is not part of our normal microbiota, and its presence in clinical specimens indicates
infection.