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. 2017 Apr;23(4):654–657. doi: 10.3201/eid2304.161668

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This is a publication of the U.S. Government. This publication is in the public domain and is therefore without copyright. All text from this work may be reprinted freely. Use of these materials should be properly cited.

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Spatial and temporal distribution of H5 clade 2.3.4.4 influenza A virus outbreaks among wild birds and poultry across North America. A) Spatial distribution of H5 clade 2.3.4.4 influenza A virus outbreaks in wild birds (triangles) and poultry (circles) across North America, color-coded by subtype, relative to poultry density. The location of mallards from Anchorage, Alaska, based on resighting of banded birds, is indicated. B) Temporal distribution of H5 clade 2.3.4.4 influenza A virus detections during the course of the outbreaks relative to the migration of mallards banded in Anchorage.