The World Distribution of Newcastle Disease-1961.

The present reports summarizes some of the information available on the incidence of Newcastle disease in 129 countries during 1961 and the measures being taken for its control. The relative importance of Newcastle disease may be judged from the fact that out of the 129 countries concerned, 81 reported that the disease was notifiable. Thirty seven of these 81 countries had adopted a systematic eradication program which involved slaughter and vaccination or vaccination only.