US Scientists at the Center for Disease Control and Purdue University published a study in the journal The Lancet, that a variation of a vaccine based on common flu controlled the dreaded H5N1 in mice. Unlike conventional vaccines, which contain safe variation of a virus, this test vaccine does not have any trace of H5N1. Asian countries are trying to cull thousands of domesticated chicken, geese, ducks, and other domestic fowl since this is means of this virus becoming pandemic that could affect 1.2 billion people. The virus has so far killed 72 people and the chance of survival of someone exposed to the virus is only 50%.