"New Smallpox Vaccine Approved 05 Sep 2007 The FDA has approved Acambis’ ACAM2000 (smallpox [vaccinia] live) vaccine for the active immunization and protection against [with] smallpox in patients who are determined to be at high risk for smallpox infection. ACAM2000 is the first biodefense vaccine to be approved as part of the US response to the 2001 [Cheney anthrax] bioterrorism attacks."
If, as some have speculated, the US government ever reaches the
point of forcing everyone to get certain vaccinations, be aware that
homeopathic nosodes exist, which protect the immune system from
the effects of vaccinations. They can reportedly also be used instead
of the vaccinations, but i haven't heard from a reliable enough source
on that, and, so far, i haven't been able to find them anyway.