Once diagnosed, the veterinarian will quarantine the infected bird and may euthanize (terminate) it, as there is no treatment or cure for the disease. Also, any suspected cases of Newcastle disease have to be reported to authorities, as the infection spreads quickly in domestic poultry, and is deadly.
The virus is not shown when birds are vaccinated and quarantined. Therefore, new birds imported to United States are prohibited from vaccination.
a condition in which an animal must be controlled in some manner in order to prevent a disease from spreading
The widening of something