Food safety threats such as Salmonella and Shigella spp., and water safety threats such as Vibrio cholerae and Cryptosporidium parvum are examples of organisms in which bioterrorism agent category?

• A. Category B
• B. Category A
• C. Category C
• D. Not categorized

Answer: (A)

The main idea is how bioterrorism agents are grouped by the level of public health risk and ease of dissemination. Category B includes organisms that are moderately easy to disseminate and cause moderate morbidity, leading to outbreaks that are serious but not as deadly as Category A agents. Salmonella and Shigella are classic foodborne pathogens that can spread through contaminated meals or water, triggering large outbreaks with significant illness and strain on public health resources. Vibrio cholerae and Cryptosporidium parvum are well-known waterborne threats; outbreaks can be widespread through contaminated drinking or recreational water, causing substantial illness, dehydration, and public health impact, yet they typically don’t have the same high mortality or panic potential as Category A agents. This combination of contagiousness through everyday vectors like food and water and the ability to cause sizable but less lethal outbreaks is why these organisms are categorized as Category B.