Review on Newcastle disease in poultry

Author(s): Thye Lim Tee

Newcastle disease is an infectious disease of the poultry caused by an avian Paramyxovirus type
that affects more than two hundred avian species in the world. It was an enzootic disease in the all parts of Asia, Africa and the Middle East and some countries in South America. Isolated outbreaks of Newcastle disease occurs sporadically in some European countries and Central America. This review synthesizes the availibility information on the virus and the disease it causes. The disease is transmitted by the direct contact with infected animals or by the indirect contact through inanimate carriers. The incubation period of the disease varied from 2 to 15 days. Five pathotypes were distinguished according to the incidence and severity for the clinical signs

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