Coinfection of Avibacterium paragallinarum and Gallibacterium anatis in Specific-Pathogen-Free Chickens Complicates Clinical Signs of Infectious Coryza, Which Can Be Prevented by Vaccination.

摘要: SUMMARY Avibacterium paragallinarum and Gallibacterium anatis are recognized bacterial pathogens both infecting the respiratory tract of chickens. The present study investigated outcomes their coinfection by elucidating clinical signs, pathologic lesions, bacteriologic findings. Additionally, efficacy a commercially available vaccine to prevent diseases caused A. G. was evaluated. Birds inoculated with alone did not any signs gross lesions in tract. However, infectious coryza were reproduced nonvaccinated birds that challenged or together anatis. Such more severe coinfected group, including death four birds. Some vaccinated showed mild at 7 days postinfection (dpi). Inflammation sinus infraorbitalis most prominent lesion found t...