Author
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King, Daniel |
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Submitted to: United States Animal Health Association Proceedings
Publication Type: Abstract Only Publication Acceptance Date: 10/11/2002 Publication Date: 3/31/2003 Citation: King, D.J. 2003. Newcastle disease (nd) world situation - 11/1/01 to 10/20/02. United States Animal Health Association Proceedings. Interpretive Summary: Technical Abstract: The Office International Des Epizooties (OIE) reports of ND outbreaks worldwide included information from the following countries: Algeria destroyed flocks from 4 outbreaks on layer farms involving 280,000 birds. Australia reported an outbreak involving 250,000 chickens on a layer farm in the state of Victoria 7 months after being declared free of ND from prior outbreaks in New South Wales. The virus was characterized as being identical or almost identical to the 1999 Mangrove mountain isolate of virulent ND virus of Australian origin. The intracerebral pathogenicity index (ICPI) of the isolate was 1.61. The infected flock was destroyed. Outbreaks in 126 primarily layer flocks, 118 backyard and 8 commercial, were reported in Denmark. Spread was due to trade of infected birds. The ICPI of one the isolates was 1.75 and all positive flocks were destroyed. Japan reported isolated outbreaks in several prefectures involving commercial layers, pigeons, and pheasants. Taipei China had one outbreak involving 30,000 chickens - initial mortality included 4,000 and remaining birds were destroyed. Venezuela had an outbreak involving 760,000 chickens and 120 fighting cocks. An epidemiological investigation revealed a significant association between the poultry farms and the fighting cock owners. The isolate ICPI was 1.87. An outbreak in backyard game fowl was reported during late September in the United States. |
