酪農学園大学野生動物医学センターWAMCを拠点とした野鳥病原体感染リスク評価研究の概要

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  • Risk Assessment of Japanese Avian Infectious Diseases Performed by the Wild Animal Medical Center (WAMC), Rakuno Gakuen University, Japan

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It has been suspected that outbreaks of mass mortality of birds occuring within the Japanese territory are possibly due to West Nile virus (WNV) infection from the Far Eastern Region of Russia. These epidemic events have been considered as one of the major factors responsible for the extinction and endangerment of avian species in Japan. Hence, our co-operative project will assess the risk of infection using screening test with application of a commercial WNV kit (VecTest) for Japanese avian species. Materials derived from 658 individuals of 123 avian species belonging to 20 orders (Yoshino et al., 2008) were examined using this particular kit. Real-time polymerase chain reaction (PCR) was also applied for a definitive diagnosis. In general, the application of the kit for the monitoring of WNV infection in the Japanese avian species was valuable, although some false-positive results were detected. After the confirmation of each negative result, each body was dissected for pathological, toxicological and parasitological examinations, because protozoan, helminth and/or arthropod parasites can become highly pathogenic agents for wild avian species. In this presentation, we will show not only the outline of the WNV infection monitoring project performed by the Wild Animal Medical Center (WAMC) (http : //www.rakuno.ac.jp/dep19/wildanimal/wildanimal.htm), Rakuno Gakuen University, but also most recent parasitological results obtained there. The present survey was supported in part by a Global Environment Research Fund (F-062, 2006-2008) of the Ministry of the Environment and a Grant-in-Aid (No. 18510205) of the Ministry of the Education, Science and Culture, Japan.

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