Submitted to: American Veterinary Medical Association Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 6/1/2001
Publication Date: 7/14/2001
Technical Abstract: Avian influenza (AI) and Newcastle disease (ND) are viral diseases of poultry and have impacted international trade in poultry and poultry products. During 1999-2000, highly pathogenic (HP) AI (H7N1) occurred in Italy following mutation of a mildly pathogenic (MP) AI virus. The HPAI virus (H7N1) was eradicated in April, 2000, but a MPAI virus (H7N1) has continued to circulate among poultry in northern Italy. Other outbreaks of MPAI occurred in Mexico (H5N2); Guatemala (H5N2); U.S. Live-Poultry Markets (H7N2); and the Middle East, Pakistan, China and Hong Kong (H9N2). HPAI viruses (H5N2) was detected in geese in Hong Kong Live-Poultry markets but no disease occurred. Control of individual outbreaks has varied by country and incident. The HPAI (H7N1) in Italy was eliminated by a depopulation program, but control of the MPAI is being attempted by using an inactivated whole virus vaccine (H7N3) in turkeys and layers. Non-vaccinated sentinel birds are being used in surveillance.