a genus of gram negative, facultatively anaerobic, rod shaped bacteria in the family Pasteurellaceae that are found predominantly in birds. Previously members of the genus Pasteurella.
commensal in birds. Can cause sinusitis and pneumonia in calves. Previously called Pasteurella avium and Haemophilus avium.
commensal in birds, but an occasional cause of low grade disease.
the cause of infectious coryza in chickens.
commensal in birds; not known to be pathogenic. Previously called Haemophilus paragallinarum.