Which of the following is an example of a biological agent recognized by the CDC as a bioterrorism threat?

Anthrax is recognized by the CDC as a significant bioterrorism threat due to its potential for large-scale impact and high mortality rate. As a spore-forming bacterium, Bacillus anthracis can be easily disseminated in the air, making it a prime candidate for use in bioterrorism. It has been involved in historical incidents, such as the 2001 anthrax attacks in the United States, which highlighted the potential for widespread fear and disruption.

While hantavirus and swine flu are infectious diseases that can cause outbreaks, they do not have the same level of recognized threat associated with bioterrorism as anthrax does. Tularemia, caused by Francisella tularensis, is also considered a bioterrorism agent; however, anthrax is more prominent in discussions about bioterrorism due to its lethality and ease of dissemination.

Thus, recognizing anthrax as an example of a biological agent highlights its importance in the context of preparedness and response to potential bioterrorism events.