Biological Agent (Terrorism) - A bacterium, virus, or other biological toxin used in bioterrorism or biological warfare.⏎
Bioterrorism - The deliberate release of a virus, bacterium, or other biological agent to cause illness and death in people, animals, or plants.⏎
Category A Agents - A class of biological agents that the Centers for Disease Control and Prevention views as posing the highest priority risk to U.S. national security.⏎
Chronic Disease - Any disease that is long lasting (3 months or more) or recurrent—as opposed to an acute disease—and cannot be prevented by a vaccine or cured by medication.⏎