CDC: New virus lacks genes of 1918 killer flu
Friday, May 1, 2009 - 13:35
in Health & Medicine
(AP) -- The new swine flu virus lacks genes that made the 1918 pandemic strain so deadly, a U.S. health official said Friday.
(AP) -- The new swine flu virus lacks genes that made the 1918 pandemic strain so deadly, a U.S. health official said Friday.