U.S. researchers report that birds from Latin America -- not from the north -- are most likely to bring deadly bird flu to the main U.S., suggesting the government might miss the H5N1 virus because biologists have been looking in the wrong direction.
The United States' $29 million bird flu surveillance program has focused heavily onmigratory birds flying from Asia to Alaska, but those birds present a much lower risk than migratory birds that make their way north from South America through Central America and Mexico, where controls on imported poultry are not as tough as in the U.S. and Canada, according to findings in the latest Proceedings of the National Academy of Sciences.
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