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|Author(s) :||D.J. Alexander & I.H. Brown|
The most widely quoted date for the beginning of the recorded history of avian influenza (AI) is 1878, when researchers first differentiated a disease of poultry (initially known as fowl plague but later renamed highly pathogenic avian influenza) from other diseases with high mortality rates. Current evidence indicates that highly pathogenic AI (HPAI) viruses arise through mutation after low pathogenicity AI viruses of H5 or H7 subtype are introduced into poultry.
Avian influenza – Definition – H5N1 – Highly pathogenic avian influenza virus – History – Nomenclature – Outbreaks – Virulence.