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|Author(s) :||M.J. Pantin-Jackwood & D.E. Swayne|
Avian influenza (AI) viruses vary in their ability to produce infection, disease and death in different bird species. Based on the pathobiological effect in chickens, AI viruses (AIV) are categorised as low pathogenic (LPAIV) or highly pathogenic (HPAIV). Typically, LPAIV cause asymptomatic infections in wild aquatic birds, but when introduced into domesticated poultry, infections may be asymptomatic or produce clinical signs and lesions reflecting pathophysiological damage to the respiratory, digestive and reproductive systems.
Avian diseases – Avian influenza virus – Highly pathogenic avian influenza – Low pathogenic avian influenza – Pathobiology – Pathogenesis – Pathotypes.