Arginine dehydrolase, lysine decarboxylase, ornithine decarboxylase, glycerol, xylitol, L(+) arabinose, dulcitol, meso-inositol,
mannitol, D(-) sorbitol, D(+) mannose, L(+) rhamnose, L(-) sorbose, cellobiose, lactose, ONPG, D(+) melibiose, sucrose
(saccharose), trehalose, raffinose, inulin, esculin, salicin & α-glucosidase (PNPG) are negative.
Indole, D(+) xylose & gas production from D(+) glucose are variable.
mannitol, D(-) sorbitol, D(+) mannose, L(+) rhamnose, L(-) sorbose, cellobiose, lactose, ONPG, D(+) melibiose, sucrose
(saccharose), trehalose, raffinose, inulin, esculin, salicin & α-glucosidase (PNPG) are negative.
Indole, D(+) xylose & gas production from D(+) glucose are variable.
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Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Proteobacteria => Gammaproteobacteria => Pasteurellales => Pasteurellaceae => Haemophilus => Haemophilus haemolyticus
Bergey, Harrison, Breed, Hammer and Huntoon 1923.
Historical synonyms: Bacillus X, Pritchett and Stillman 1919.
Bergey, Harrison, Breed, Hammer and Huntoon 1923.
Historical synonyms: Bacillus X, Pritchett and Stillman 1919.
Gram negative coccobacilli or rods , filamentous forms, non-capsulated.
Colonies on chocolate agar are smooth, convex, translucent, grayish, 0.5-1.5 mm in
diameter after 24 hours. Beta hemolysis, lost after subcultivation.
Aerobic, facultatively anaerobic, require X-factor and V-factor for growth. CO2 is not
required. Growth on Mac Conkey agar is negative.
diameter after 24 hours. Beta hemolysis, lost after subcultivation.
Aerobic, facultatively anaerobic, require X-factor and V-factor for growth. CO2 is not
required. Growth on Mac Conkey agar is negative.
Nasopharynx of the healthy humans and in subgingival dental plaque
None.
- Mogens Kilian, 2004.Genus III. Haemophilus . In: Bergey’s Manual of Systematic Bacteriology, Second edition,Vol two, part B,
George M. Garrity (Editor-in-Chief), pp. 883-904. - Mary P.E. Slack, 2006.Haemophilus. In: Topley & Wilson’s Microbiology and Microbial Infections, 10 edition, Vol. 2,
Bacteriology, Edward Arnold Ltd. - J. G.Holt et al., 1994.Begey’s manual of Determinative Bacteriology, 9-edition, Williams & Wilkins.
- Zinnemann K., Biberstein E.L., 1975.Genus Haemophilus.In:Buchanan R.E., Gibbons N.E. (co-editors), Bergey’s Manual of
Determinative Bacteriology, eight edition, The Williams & Wilkins Company, Baltimore. - Pozsgi N., 1985.Genul Pasteurella. In: Bacteriologie medicala, vol II, v. Bilbiie, N. Pozsgi (sub redactia), Ed. Medicala,
Bucuresti,132-133.
Nitrates reduction, oxidase, alkaline phosphatase, catalase, H2S, urease, acid from
D(+) glucose, maltose, D(-) fructose(weak) & D(+) galactose are positive.
D(+) glucose, maltose, D(-) fructose(weak) & D(+) galactose are positive.
(c) Costin Stoica
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