Tropical Asia Invaded: Newcastle disease

Newcastle disease, caused by a virus belonging to the family Paramyxoviridae, is a disease of birds, including domestic poultry, cage and aviary birds, and wild birds. There is no known cure for the disease, which is characterised by digestive, respiratory and nervous distress, although many birds die without showing any symptoms. The virus is shed in the droppings, as well as secretions from the nose, mouth and eyes, so it spreads rapidly within a bird colony or poultry farm. Humans unwittingly facilitate the spread the disease when infected material contaminates their clothes, shoes or equipment.

Reference: Sue Matthews  Tropical Asia invaded: The growing danger of invasive alien species Global Invasive Species Programme 2004