Haemophilus paragallinarum, the causative agent of infectious coryza in poultry, is an extremely fastidious organism requiring specific growth conditions for isolation. For complete control of the disease in regions where more that one of the serovars of the different serogroups occurs, it is essential that the bacterium causing the problem be isolated and serotyped. This work describes the mod...

Abstract The bacterium Avibacterium paragallinarum , previously known as Haemophilus is responsible for causing infectious coryza (IC) in chickens and other avian species. In this case report, an outbreak of occurred the Qinling area China, resulting clinical symptoms facial swelling several bird species, including Golden pheasant, Temminck's tragopan, Peafowls, three pheasants died due to prol...

Infectious catarrh of chickens (fowl coryza of slow onset) was not transmissible to mice or rats by nasal instillation of the specific coccobacilliform bodies. Exudates were also inactive in both rodents on foot pad injection. The infectious catarrhs of the mouse and the rat were reciprocally transmissible by the nasal injection of exudates or tissue cultures of the respective coccobacilliform ...

A total of 53 trachea, air sacs, lung, and infra orbital sinus exudates were collected from 5 commercially reared Japanese quail farms showing typical symptoms of infectious coryza. Avibacterium paragallinarum was isolated and identified using selective media and by biochemical identification methods. Biochemical identification tests such as satellitism, IMViC tests and carbohydrate fermentatio...

In South Africa the incidence of NAD-independent Haemnophilus paragallinarum isolation from clinical cases is increasing. This study was carried out to test whether a commercially available coryza vaccine (Nobilis Coryza, Intervet International BV) could protect chickens against challenge with recent NAD-independent isolates. SPF chickens were vaccinated twice at 3 and 7 weeks of age and were c...