What is a correct description of Category C biological agents?

Category C biological agents are those that include emerging pathogens that might cause a significant health threat to the public due to their potential for mass dissemination. These agents are often not well understood and have the potential to be engineered or manipulated to enhance their infectivity or transmission. Examples include pathogens that are considered to be a risk either because they are novel or because they can be easily spread, thus posing a concern in the context of bioterrorism or public health emergencies.

This characterization reflects the need for vigilance and preparedness, as the emergence of such pathogens can lead to increased morbidity and mortality in the population if they were to be released intentionally or unintentionally. The focus on their potential for mass dissemination underscores the importance of understanding how these agents can be spread effectively, leading to rapid outbreaks.

In contrast, the other descriptions refer to groups of biological agents that are classified based on their characteristics and risks. The highest priority agents with high mortality rates would typically fall into Category A, while agents that are classified as low risk to public health would be less concerning and would not fit the definition of Category C agents. Similarly, agents that are moderately easy to disseminate but do not represent emerging threats would not accurately represent the classifications intended for Category C.