Translator Disclaimer
30 November 2015 Coinfection of Avibacterium paragallinarum and Ornithobacterium rhinotracheale in Chickens from Peru
Author Affiliations +
Abstract

The coinfection of Avibacterium paragallinarum and Ornithobacterium rhinotracheale in two outbreaks of infectious coryza from Peru is reported. The diagnosis was confirmed by bacteriologic isolation, PCR testing, and sequencing of the 16S rRNA gene. The susceptibility of the isolates to 12 antimicrobial agents was tested by a disk diffusion method. The isolates were susceptible to amoxicillin/clavulanic acid and florfenicol and were resistant to oxacillin and sulfamethoxazole/trimethoprim. The coinfection of Av. paragallinarum and O. rhinotracheale and the severity of clinical signs were evaluated by experimental infection of specific-pathogen-free chickens. The group inoculated with O. rhinotracheale alone presented minimal clinical signs in 3 of 10 chickens. However, the groups inoculated with both Av. paragallinarum and O. rhinotracheale induced the most-severe clinical signs compared with the group inoculated with Av. paragallinarum alone. In conclusion, coinfections with Av. paragallinarum and O. rhinotracheale may occur, and these outbreaks could be more severe than single infections. Hence, the prevention, control, and diagnosis of Av. paragallinarum with O. rhinotracheale are important in outbreaks of infectious coryza.

© 2016 American Association of Avian Pathologists
V. Morales-Erasto, F. Falconi-Agapito, G. A. Luna-Galaz, L. E. Saravia, A. Montalvan-Avalos, E. Soriano-Vargas E, and M. Fernández-Díaz "Coinfection of Avibacterium paragallinarum and Ornithobacterium rhinotracheale in Chickens from Peru," Avian Diseases 60(1), 75-78, (30 November 2015). https://doi.org/10.1637/11265-082015-ResNote.1
Received: 24 August 2015; Accepted: 1 November 2015; Published: 30 November 2015
JOURNAL ARTICLE
4 PAGES


SHARE
ARTICLE IMPACT
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top