<p>In the year since an unknown bioterrorist stuffed envelopes with anthrax and mailed them, the government has stockpiled anthrax vaccine and antibiotics, planned mass vaccination campaigns and ordered 209 million fresh doses of smallpox vaccine.</p>
<p>Yet the United States is still unprepared to contend with other agents on its A-list of potential biowarfare threats, especially botulinum toxin, an experimental terror tool of Saddam Hussein's.</p>