Aspergillosis — United States
Response from the USGS National Wildlife Health Center:
3 mallard ducks (_Anas platyrhynchos_) collected by the Idaho Department of Fish and Game (IDFG) from this mortality event were necropsied at the US Geological Survey’s National Wildlife Health Center in Madison, Wisconsin, USA. Gross and microscopic lesions in the lungs were consistent with acute aspergillosis. Additionally, _Aspergillus fumigatus_ was confirmed on fungal culture of the lung.
We have thus determined the cause of this
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