One primary concern is terrorists acquiring biological agents, which could cause mass casualties. Of these, existing diseases such as smallpox, hemorrhagic fever, anthrax, and plague, which are easily...

One primary concern is terrorists acquiring biological agents, which could cause mass casualties. Of these, existing diseases such as smallpox, hemorrhagic fever, anthrax, and plague, which are easily obtainable in the “public domain” in comparison to other biological agents, are a primary concern.