My thought, as well.
"Iraq may have unleashed the West Nile Virus in the United States via Cuba through the release of migratory birds infected with the virus..."
Thus, the article's initial premise is not credible. That's not to say Iraq, or even Cuba, isn't involved. But the migratory methodology was almost certainly not employed.
So the burden of proof lays on those who are seeing a death threat on America? or should it be on those who see nothing wrong? This is the way Challenger blew up by the way, because the engineer in question could not prove that it was going to blow up.