Newcastle bird disease outbreaks in Eastern Kazakhstan
Azerbaijan, Baku, May 3 / Trend E. Kosolapova/
The Newcastle bird disease outbreak is declared in Eastern Kazakhstan, Kazakh Agriculture Ministry reported on Friday.
According to the Ministry, some chickens died in private households in Kazakh village of Makanchi. The investigation of the dead poultry's biological material revealed pathogens of Newcastle disease. According to preliminary version, wild migratory birds brought the disease to the region.
A number of measures are taken to prevent further spread of the disease. The regional authority imposed quarantine on the household, where the disease was revealed. All poultry in the village were examined, 1,200 birds vaccinated, 2,500-square meters area disinfected. The local authorities were ordered to shoot wild birds off.
Newcastle disease is a contagious bird disease affecting many domestic and wild avian species. It is also transmissible to humans. An infected bird may exhibit several signs, including respiratory signs (gasping, coughing), nervous signs (depression, inappetence, muscular tremors, drooping wings, twisting of head and neck, circling, complete paralysis), swelling of the tissues around the eyes and neck, greenish, watery diarrhea, misshapen, rough- or thin-shelled eggs and reduced egg production. In acute cases, the death is very sudden, and, in the beginning of the outbreak, the remaining birds do not seem to be sick. In flocks with good immunity, however, the signs (respiratory and digestive) are mild and progressive, and are followed after seven days by nervous symptoms, especially twisted heads.
Exposure of humans to infected birds can cause mild conjunctivitis and influenza-like symptoms, but the Newcastle disease virus otherwise poses no hazard to human health. No treatment for the disease exists, but the use of prophylactic vaccines and sanitary measures reduces the likelihood of outbreaks.