Bioterrorism agents are potential pathogenic organisms or biological toxins that can cause death and disease in humans, plants, or animals for terrorist purposes. These agents are generally microorganisms present in nature, but which have been modified to increase their virulence and make them resistant to antibiotics or vaccines. To improve the ability of these agents to disseminate in the environment, terrorists consider biological agents as an alternative to conventional weapons due to their low cost and accessibility. Any attempt to use bioterrorist agents, whether successful or unsuccessful, could cause widespread destruction of humanity as well as disruption to society at large. Bioterrorism has been around much longer than most people realize. In the 6th century BC, the ergot fungus was used to poison the wells of the Assyrians' enemies. Smallpox, which some say began appearing in 10,000 BC, was used by the British in what we call bioterrorism. Smallpox victims used blankets to keep warm, which would transmit the disease. The British then passed these blankets down to Native American tribes, which greatly reduced the number and size of Native tribes. In the 1980s, Salmonella was used to sicken many people eating at a salad bar. This was a process initiated by the followers of Bhagwan Shree Rajneesh. As life advances, intelligence will improve, which means there will be better technologies and designs for bioterrorist agents. Researchers will constantly be looking for a way to stop any agent that could cause mass destruction in the future. Previous articles on bioterrorism agents have provided context for this ongoing discussion about the classification system used to already categorize hazards... ... middle of paper ...... and could possibly have morbidity and significant mortality. This would cause international distress which could cause serious difficulties worldwide. Nipah virus is one of these agents grouped in category C. Nipah virus was an epidemic that occurred in Malaysia. This virus was contracted in humans through direct contact with a pig-infected host. This virus has not been documented in the United States, but has caused more than 1 million deaths in Malaysia. The outbreak of this virus has been eradicated, but fruit bats are still likely to carry the virus and possibly spread the infection again. If this virus were to spread to other areas, there is little that many could do. With little research into the virus, we don't know what might prevent or even cure some of the clinical symptoms that accompany this virus...