Yeah, the world is about due for another flu pandemic. Been predicted for years now. The CDC says There currently is no vaccine to protect humans against the H5N1 virus that is being seen in Asia. However, vaccine development efforts are under way. Research studies to test a vaccine to protect humans against H5N1 virus began in April 2005. (Researchers are also working on a vaccine against H9N2, another bird flu virus subtype.)
However, a contract to develop an H5N1 vaccine was let to two companies in August, 2005. This would be an inactivated virus vaccine.
In the meantime, wash your hands thoroughly and use other good, sensible, health techniques.
(Why would you stockpile weapons? What are you going to do, shoot the virus? Oh well, I guess some folks will worry about 'most anything.)