Bird flu self-defense: 7 key questions answered

Is bird flu making a comeback? The U.N.'s Food and Agriculture Organization (FAO) said on August 29 there was evidence that a mutant strain of the H5N1 avian influenza virus was spreading in Asia and beyond, "with unpredictable risks to human health." The CDC says H5N1 poses no threat in the U.S. - at least at this point. Still, Americans are newly curious about bird flu, which according to the FAO has infected 565 people and killed 331 since it first appeared in 2003.

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