The only known remaining stocks of virus are in two laboratories, one at the Centers for Disease Control and Prevention in Atlanta and the other in Russia.
Um, not exactly...
Russia has 20 tons of the stuff (and no controls)...
The Demon in the Freezer And if it gets loosed on a world with NO immunity, well...
The United States has made dramatic steps to increase its stockpile of 15 million doses of smallpox vaccine. None of which is available for the American public.
Well, at least the "stockpile" will not get smallpox.