An Effect of the 911 Attack on the USA:
 Fear of Bio-terrorism

• "Please inject 50-year-old vaccina virus into our bloodstreams”:
  Two of every three people in the United States are willing to be vaccinated against smallpox, a disease feared as a possible agent of bio-terrorism, a poll released Wednesday finds http://story.news.yahoo.com/news?tmpl=story&u=/ap/20021211/ap_on_he_me/bioterrorism_poll_2  
• Vaccinations to start in January:
  President Bush is expected to announce as early as this week a plan to vaccinate 500,000 health workers against smallpox as a counter-terrorism measure, administration sources said on Tuesday.  http://story.news.yahoo.com/news?tmpl=story&u=/nm/20021211/hl_nm/smallpox_vaccine_dc_1 
• Healthy college students experience severe side effects from smallpox shots:
  Healthy college students injected with the smallpox vaccine in clinical trials have developed aches, pains and fevers that laid them up for days. http://www.nydailynews.com/news/story/42524p-40131c.html  
• “Please cut off my arm!” Smallpox vaccine test patient says pain was unbearable:
  A week after she was given an experimental dose of smallpox vaccine, Elizabeth Forrester's arm became swollen, her head throbbed and she felt tired and feverish. "At one point I was like 'cut it off, please cut off my arm,"' she recalled telling her husband when the pain kept her from sleeping. http://www.startribune.com/stories/670/3526249.html  
• Doctors want lawsuit immunity in place before they start jabbing citizens with risky smallpox vaccine: The American Medical Association (AMA) wants federally backed liability protections "in place before initiation of any smallpox vaccine program." http://story.news.yahoo.com/news?tmpl=story&u=/nm/20021211/hl_nm/smallpox_doctors_dc_1

Also:

•  Remember the 2001 USA PATRIOT Act, released just weeks after the 9/11 tragedy? The sheer volume of the bill caused many observers to speculate that it had been drafted prior to the terrorist attacks. Then came the 2002 Homeland Security Bill, with a last minute vaccine rider that surprised even the Committee of Jurisdiction (who are responsible for all amendments).