| Haemophilus paraphrohaemolyticus |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Gammaproteobacteria, Order Pasteurellales, Family Pasteurellaceae, Genus Haemophilus,
Haemophilus paraphrohaemolyticus Zinnemann, Rogers, Frazer and Deveraj 1971.
Haemophilus paraphrohaemolyticus Zinnemann, Rogers, Frazer and Deveraj 1971.
Gram-negative coccobacilli or rods, occasionally short filaments.
Colonies on chocolate agar incubated in air supplemented with 10% CO2 are high
convex, granular, yellowish, opaque, 1.0-1.5 mm in diameter within 24 hours; without
CO2 , the growth is characteristically stunted, with very small colonies interspersed
with a few larger colonies. Beta-hemolysis is produced.
Aerobic, facultatively anaerobic, require V-factor but not X-factor for growth. Require
CO2 enriched atmosphere. Growth on Mac Conkey agar is negative.
convex, granular, yellowish, opaque, 1.0-1.5 mm in diameter within 24 hours; without
CO2 , the growth is characteristically stunted, with very small colonies interspersed
with a few larger colonies. Beta-hemolysis is produced.
Aerobic, facultatively anaerobic, require V-factor but not X-factor for growth. Require
CO2 enriched atmosphere. Growth on Mac Conkey agar is negative.
Bacteria has been isolated from human sore throats, ulcers of the mouth, sputum and urethral discharge of adult males.
Unknown.
- 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, 10th edition, Vol. 2, Bacteriology,
Edward Arnold Ltd. - J. G. Holt et al., 1994. Facultatively Anaerobic Gram-Negative Rods. Subgroup 3. Family Pasteurellaceae. In: Begey’s Manual of
Determinative Bacteriology, 9th-edition, Williams & Wilkins, pp 194-196. - 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.
Positive results for nitrates reduction, oxidase, alkaline phosphatase, catalase, H2S production, urease, acid production from: D(+)
glucose without gas), D(-) fructose, maltose, and sucrose.
Negative results for arginine dehydrolase, lysine decarboxylase, ornithine decarboxylase, alpha-glucosidase, indole production, acid
production from: glycerol, xylitol, L(+) arabinose, D(+) xylose, dulcitol, meso-inositol, mannitol, D(-) sorbitol, D(+) mannose, L(+)
rhamnose, L(-) sorbose, cellobiose, lactose, D(+) melibiose, trehalose, raffinose, inulin, esculin, and salicin.
ONPG and acid production from D(+) galactose are variable.
glucose without gas), D(-) fructose, maltose, and sucrose.
Negative results for arginine dehydrolase, lysine decarboxylase, ornithine decarboxylase, alpha-glucosidase, indole production, acid
production from: glycerol, xylitol, L(+) arabinose, D(+) xylose, dulcitol, meso-inositol, mannitol, D(-) sorbitol, D(+) mannose, L(+)
rhamnose, L(-) sorbose, cellobiose, lactose, D(+) melibiose, trehalose, raffinose, inulin, esculin, and salicin.
ONPG and acid production from D(+) galactose are variable.
(c) Costin Stoica
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