Since 2003, H5N1, or the avian flu, claimed the lives of over 300 people at a mortality rate of near 60%. With those figures, one could say with confidence that H5N1 is a potentially dangerous strain of flu that doesn't really need an amped-up version. Regardless of how much of a bad idea creating a superflu that could devastate humanity is, a team of United States' scientists was behind the creation of an airborne virus that is said to put anthrax to shame. Though the original strain of H5N1 fell short of a pandemic, this man-made rendition is said to transmit faster, a claim backed up by ferrets used to test the virus. Why ferrets, you ask? Well, they seem to have a very similar response to the flu as humans.