One of the world's deadliest smallpox virus samples was accidentally found during cleaning operations at a Merck vaccine facility. The virus is considered so deadly that only two labs in the world are authorized to keep samples of it, one in Russia and the other at the CDC in Atlanta. Meanwhile, Bill Gates has warned governments to prepare for smallpox terror attacks and future pandemics by investing billions in a global pandemic task force that will conduct "germ games" to prepare for future outbreaks or biological attacks.