Avian - 2002
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| Project Contact: | David Halvorson | Funding: | $58,650 |
| Kakambi Nagaraja |
District:
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Unknown |
| The Problem Objectives |
The U.S. was considered free of avian pneumovirus (APV) until an outbreak in turkeys occurred in Colorado in 1996. Shortly thereafter it was found in commercial flocks in Minnesota. Eradication in Minnesota through biocontrols proved inadequate because of the size of Minnesota commercial industry. Furthermore, the seasonal trends of APV’s appearance in the U.S. suggest environmental factors that might include transmission of the disease by wild migratory birds.
TheAPV outbreak in the U.S. is concentrated in Minnesota and the Dakotas, where most disease outbreaks are reported in the spring and autumn. In Minnesota, 39 percent of the outbreaks occur between April and May, and 40.8 percent between October and December. The presence of APV has been shown in wild sparrows, geese, starlings and ducks.
Our first research objective is to determine whether protecting a commercial turkeys from access by wild birds would prevent APV outbreaks. Then we want to determine whether a vaccine from one APV isolate (from 1997) will provide cross protection against a different APV isolate from a later outbreak (1999). This project will continue through December 2003.