Photomicrograph of Avibacterium paragallinarumafter culture of a sample on blood agar
Photomicrograph of <i >Avibacterium paragallinarum</i>after culture of a sample on blood agar
Photomicrograph of Avibacterium paragallinarumafter culture of a sample on blood agar

    The causative bacterium of infectious coryza is A paragallinarum, a gram-negative, pleomorphic, nonmotile, catalase-negative, microaerophilic rod.

Courtesy of Dr. E. Soriano-Vargas.