Genotyping, pathogenicity, and immunogenicity of Avibacterium paragallinarum serovar B-1 isolates from the Americas

Morales-Erasto, V., Fernandez-Rosas, P., Negrete-Abascal, E., Salazar-Garcia, F., Blackall, P. J. and Soriano-Vargas, E. (2014) Genotyping, pathogenicity, and immunogenicity of Avibacterium paragallinarum serovar B-1 isolates from the Americas. Avian Diseases, 58 2: 293-296. doi:10.1637/10693-101513-ResNote.1


Author Morales-Erasto, V.
Fernandez-Rosas, P.
Negrete-Abascal, E.
Salazar-Garcia, F.
Blackall, P. J.
Soriano-Vargas, E.
Title Genotyping, pathogenicity, and immunogenicity of Avibacterium paragallinarum serovar B-1 isolates from the Americas
Formatted title
Genotyping, pathogenicity, and immunogenicity of Avibacterium paragallinarum serovar B-1 isolates from the Americas
Journal name Avian Diseases   Check publisher's open access policy
ISSN 0005-2086
1938-4351
Publication date 2014-06-01
Year available 2014
Sub-type Article (original research)
DOI 10.1637/10693-101513-ResNote.1
Open Access Status Not yet assessed
Volume 58
Issue 2
Start page 293
End page 296
Total pages 4
Place of publication Jacksonville, FL United States
Publisher American Association of Avian Pathologists
Language eng
Formatted abstract
The bacterium Avibacterium paragallinarum is the etiologic agent of infectious coryza of chickens. Among the nine Kume serovars currently recognized in this bacterium, serovar B-1 is a common serovar in the Americas. In the current study, serovar B-1 isolates from Ecuador (seven isolates), Mexico (seven isolates) and Panama (two isolates) were genotyped. In addition one Panamanian, one Ecuadorian, and two Mexican isolates were used in a vaccination-challenge trial in which the vaccine was based on the 2671 serovar B-1 reference strain. Genotyping by enterobacterial repetitive intergenic consensus-based PCR (ERIC-PCR) resulted in ten distinguishable ERIC patterns for the 16 isolates and the two reference strains of Av. paragallinarum included in the study. No ERIC patterns were shared among isolates of the three different countries. In the vaccination-challenge trial, one isolate from Panama showed a significantly lower virulence than did the three other isolates. In terms of cross-protection, chickens vaccinated with reference strain 2671 and challenged with an Ecuadorian strain showed 40% protection, a significantly lower protection than the homologous protection level. The other three field isolates gave a similar protection level to the homologous challenge.
Keyword Avibacterium paragallinarum
Serovar B-1
Infectious coryza
Poultry
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID 2732/2008U
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Queensland Alliance for Agriculture and Food Innovation
Official 2015 Collection
 
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