NCIt definition : A species of facultatively anaerobic, Gram negative, coccobacilli shaped bacteria
assigned to the phylum Proteobacteria. This species is catalase negative and produces
acid from D-mannitol and D-sorbitol. A. paragallinarum is pathogenic in birds causing
upper respiratory infections such as infectious coryza.;
Alternative definition : CDISC: Any bacterial organism that can be assigned to the species Avibacterium paragallinarum.;