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Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Proteobacteria => Gammaproteobacteria => Pasteurellales => Pasteurellaceae => Haemophilus => Haemophilus
paraphrohaemolyticus Zinnemann, Rogers, Frazer and Deveraj 1971.
paraphrohaemolyticus Zinnemann, Rogers, Frazer and Deveraj 1971.
Gram negative coccobacilli, rods , occasional 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 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 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, 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.
Positive results for nitrates reduction, oxidase, alkaline phosphatase, catalase, H2S,
urease, acid from D(+) glucose, D(-) fructose, maltose & sucrose (saccharose)
ONPG & acid production from D(+) galactose are variable reactions.
urease, acid from D(+) glucose, D(-) fructose, maltose & sucrose (saccharose)
ONPG & acid production from D(+) galactose are variable reactions.
Negative results for arginine dehydrolase, lysine decarboxylase, ornithine decarboxylase, indole, 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, salicin, α-glucosidase (PNPG) & gas from D(+) glucose.
xylose, dulcitol, meso-inositol, mannitol, D(-) sorbitol, D(+) mannose, L(+) rhamnose, L(-) sorbose, cellobiose, lactose, D(+)
melibiose, trehalose, raffinose, inulin, esculin, salicin, α-glucosidase (PNPG) & gas from D(+) glucose.
(c) Costin Stoica
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