The article and the footnotes make it sound like the real debate is whether it went directly from bird to human, or jumped to swine first. EDIT: The abstract o

The article and the footnotes make it sound like the real debate is whether it went directly from bird to human, or jumped to swine first. EDIT: The abstract of the paper that questions the origin asserts: > In light of this alternative interpretation, we suggest that the current intense surveillance of influenza viruses should be broadened to include mammalian sources.