Which bacterium was implicated in a terrorism event in 2001?

Bacillus anthracis is the bacterium that was implicated in the terrorism event in 2001, specifically in the anthrax attacks that occurred shortly after the September 11 attacks. This bacterium causes anthrax, a serious infectious disease that can be lethal in humans if not treated properly.

The anthrax spores were mailed in letters to several media outlets and government officials, leading to widespread panic and a significant public health response. The ability of Bacillus anthracis to form spores makes it particularly concerning as a bioweapon, as these spores can be easily dispersed and inhaled, leading to severe respiratory issues.

The other bacteria listed—Escherichia coli, Clostridium botulinum, and Staphylococcus aureus—are associated with foodborne illnesses and other health concerns but were not involved in the specific events of the 2001 anthrax attacks. Understanding the implications of Bacillus anthracis not only helps in recognizing the historical context of bioterrorism but also highlights the importance of preparedness and response in public health.