Which substances have exposure capable of causing permanent disability or life-threatening or fatal disease in otherwise healthy humans and animals like Ebola, rabies, or swine fever virus?

• A. Medical and clinical waste
• B. Biological Products
• C. Category A Substances
• D. Category B Substance

Answer: (C)

The key idea is how infectious substances are classified for transport based on the potential seriousness of disease from exposure. Substances that can cause permanent disability or life‑threatening or fatal disease in otherwise healthy humans and animals are placed in Category A. That’s why examples like Ebola, rabies, and swine fever virus are Category A. This category carries the strictest shipping rules, including special packaging, labeling, and handling. Category B covers infectious substances that pose a lower risk and do not meet those severe criteria, while medical and clinical waste and biological products are not the Category A hazard classification. So the best match for the description given is Category A Substances.