The H5 avian influenza A virus that devastated North American poultry farms in 2014-15 was initially spread by migratory waterfowl, but evidence suggests that such highly pathogenic flu viruses do not persist in wild birds, according to research led by St. Jude Children’s Research Hospital that appears online this week in Proceedings of the National Academy of Sciences.
While wild ducks and other aquatic birds are known to be natural hosts for low-pathogenic flu viruses as
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