Avian influenza virus: Of virus and bird ecology

The recent introductions of highly pathogenic avian influenza (HPAI) H5N1 virus in wild birds and its subsequent spread throughout Asia, the Middle East, Africa and Europe has put a focus on the role of wild birds in the geographical spread of HPAI H5N1 virus. Large-scale surveillance programs are ongoing to determine a potential role of wild birds in H5N1 virus spread and to serve as sentinel systems for introductions into new geographical regions. The unprecedented scale and coverage of these surveillance programs offer a unique opportunity to expand our current knowledge on the ecology of LPAI in wild migratory birds. We provide an update on the current knowledge on the relation between host and virus ecology.

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