Which statement best describes the CDC Category ABC Agents List?

• A. Agents Are Divided Into A=Viruses, B = Bacteria, And C = Toxins; All Agents On The List Represent Agents That Have Been Used As A Bioweapon Or There Is A History Of Development For Use As A Bioweapon
• B. Have Been Categorized Based On The Severity Of Disease They Cause (Most Fatal To Least Fatal) To Determine Response Priorities
• C. Was Established As A Way To Help Prioritize Preparedness Efforts; For Example, Category A Agents Receive The Highest Priority Because They Pose The Highest Risk To Public And National Security
• D. Is A List Of Viruses, Bacteria And Toxins Categorized By Accessibility To Threat Materials

Answer: (C)

The list is a tool for prioritizing preparedness efforts in public health and national security. It classifies agents to guide where to focus training, surveillance, stockpiling of countermeasures, and response planning. Category A is highest priority because these agents pose the greatest risk to public health and national security: they are highly accessible or easily disseminated, cause significant morbidity and mortality, and could have a dramatic impact on society. This focus helps agencies allocate resources where the threat is greatest.

The other statements don’t fit as well. It isn’t defined strictly by whether an agent is a virus, bacteria, or toxin, nor by a simple history of use as a bioweapon. It isn’t based solely on how severe the disease is, and it isn’t structured around how easily threat materials can be obtained. The emphasis is on overall risk to public health and national security to guide preparedness priorities.