` ` The world is a perfect example of vulnerability , '' WHO director Dr. John McCarthy says . Someone could unleash a deadly , genetically engineered microbe that we ca n't fight . Prevent . Nothing has the potential to kill more people than influenza , he says .
` ` The world is a perfect example of vulnerability , '' WHO director Dr. John McCarthy says . Someone could unleash a deadly , genetically engineered microbe that we ca n't fight . Nothing has the potential to kill more people than influenza , he says .