| identification of avibacterium paragallinarum serovar b-1 from severe infectious coryza outbreaks in panama. | the isolation and identification of avibacterium paragallinarum serovar b-1 from severe infectious coryza outbreaks in broiler breeders in panama is reported for the first time. infectious coryza was absent for over a decade in the breeder farms area. disease outbreaks were characterized by an up to 45% drop in egg production and increased mortality. use of a commercial trivalent bacterin and a strengthened biosecurity program prevented outbreaks in susceptible flocks in the farm. | 2010 | 20945795 |