ERIC-PCR Genotyping of Emergent Serovar C-1 Isolates of Avibacterium paragallinarum from Mexico

作者：Morales Erasto V; Garcia Sanchez A; Salgado Miranda C; Talavera Rojas M; Robles Gonzalez F; Blackall P J; Soriano Vargas E^*

来源：Avian Diseases, 2011, 55(4): 686-688.

• Avibacterium paragallinarum
• serovar C-1
• infectious coryza
• poultry
• Mexico

Between 2008 and 2010, 14 isolates of Avibacterium paragallinarum were identified as serovar C-1 in Mexico. All isolates were obtained from commercial laying hens suffering infectious coryza despite a history of vaccination. The enterobacterial repetitive intergenic consensus-based PCR genotyping showed that all isolates had a common pattern. Until recently, serovars A-1, A-2, B-1, and C-2 were the serovars prevalent in Mexico. Serovar C-1 has been identified in Japan and recently in the Americas in Ecuador. Our current study suggests that Av. paragallinarum serovar C-1 is an emerging serovar in Mexico. Our results also indicate that the Mexican isolates of Av. paragallinarum serovar C-1 may have a clonal relationship. Knowledge of the genetic diversity of Av. paragallinarum may be of value in understanding vaccine performance and identifying the best combination to achieve broader protection.

• 出版日期2011-12