Among Biological Weapons, Smallpox is in a Class by Itselfhttp://articles.mercola.com/sites/articles/archive/2001/10/20/smallpox-part-one.aspxEven as a team of investigators descends on Florida in response to a death from anthrax, it is smallpox that has many experts losing sleep. Ancient and vicious, the virus killed more people over the ages than any other infectious disease, up to 500 millionenCommunityServer 2008.5 SP1 (Build: 31106.3070)