Chemical-Bioterrorism is the planned, unlawful use, or threat of use, of chemical and/or biological weapons with the intent of causing death or disease in humans, animals, or plants. The goal of bioterrorism is usually to create fear and/or intimidate governments or societies for the purpose of gaining political, religious, or ideological goals. Bioterrorism may have a different effect on societies than would weapons such as explosives. A chemical or bioterrorism attack may not always be noticed immediately. For example, if a bacteria, virus or chemical agent was spread through the air, people may not show symptoms for days. Also, although some agents may be first spread through the air (aerosolized), by food, or by water, some may continue to be spread over a period of time by person-to-person contact.