HAEMAGGLUTININ ANTIGEN

摘要

Haemagglutinin polypeptides and encoding nucleic acids are isolated from eleven strains of Haemophilus paragallinarum. The haemagglutinin polypeptides are useful in vaccines for immunization against infectious coryza in chickens, as are the encoding nucleic acids when expressed in attenuated bacteria. Also provided are methods of use of the haemagglutinin polypeptides and nucleic acids for detection and diagnosis of, and immunization against, infectious coryza in chickens.