Abstract
The causative agents of viral diseases among birds are widespread in nature. The spread of Newcastle among wild and domestic bird populations requires veterinary services to take effective control measures based on molecular epidemiological data.The article presents data from monitoring studies on Newcastle disease in various regions of Kazakhstan. Collection of samples from poultry and wild birds was carried out in private farmsteads in different regions of Kazakhstan.In order to determine the immune status of birds in individual farms and poultry farms, we conducted studies on the presence of antibodies to the Newcastle disease virus in the blood of birds.It has been established that 82.3% of birds from private farms and poultry farms have antibodies to the Newcastle disease virus in the blood sera. In Kostanay, Akmola, Turkestan and North Kazakhstan regions, the percentage of immune birds is above 80%, in Zhambyl, Kyzylorda, West Kazakhstan, Almaty and Abay the percentage of immune birds is within 55-72.1%.In Aktobe and Atyrau regions, 1-32% of birds have antibodies to the ND virus. It is likely that in these areas birds are not vaccinated across the entire population. The risk of developing ND is average.