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Species/Subspecies: Avibacterium paragallinarum
Etymology: Genus name: bakterium from birds.
Species epithet: resembles A. gallinarum (gallinarum: from fowl).
Significance:The disease can cause substantial economical losses
  [Of minor importance]   
Old Species Name(s):Haemophilus paragallinarum
Type Strain: IPDH 2403 = ATCC 29545 = NCTC 11296
Macromorphology (smell): Small grayish and semi-opaque colonies (0.5-1.0 mm in diameter).
Micromorphology: Nonmotile coccoid to pleomorphic rod
Gram +/Gram -:G-
Metabolism: Microaerophilic
Other Enzymes: Esculinase -, tryptophanase (indole) -, urease -.
Biochemical Tests: Hydrogen sulphide (H2S) -,
Fermentation of carbohydrates:
Other carbohydrates: Adonitol -, dulcitol -, D-galactose -, inositol -, melezitose -, melibiose -, sorbose -, xylitol -.
Spec. Char.:
Hosts: Chickens
Disease (Swedish):Coryza
Disease (English):Fowl (or infectious) coryza
Clinical Picture: Nasal and eye discharge, conjunctivitis, edema of the head, dyspnea, decreased egg production
16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
AY498868 (T) 1463  

Taxonomy/phylogeny: Five species have been described within genus Avibacterium, which are relatively close to members of the genus Gallibacterium.
Comment:Difficult diagnosis, has been isolated once in Sweden
Reference(s): No. 57, 67

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Swedish University of Agricultural Sciences