What is bioterrorism?

The use of biological agents, such as pathogenic organisms or agricultural pests, for terrorist purposes.

OR

Terrorism using the weapons of biological warfare.

OR

Terrorism that relies on spreading diseases, such as anthrax and smallpox.

OR

The use of biological agents as weapons of terror. Anthrax bacteria are one such agent, while smallpox is considered one of the more likely lethal viruses that could serve as a weapon of bioterror.