Biological hazards and threats, also known as biohazards, refer to biological substances that pose a threat to the health of living organisms, primarily that of humans.
This includes medical waste or samples of a microorganism, virus or toxin (from a biological source) that can impact human health, as well as substances harmful to animals.
The term is generally used as a warning, so that those potentially exposed to the substances will know to take precautions.
Biological agents are when germs or toxins are dispersed into the air with the intention of making people sick, incapacitating livestock and hindering crops from growing. Many of these agents are difficult to cultivate, but some can be very long-lived, like anthrax spores.
They may be spread through aerosols, animals, and food and water contamination, as well as from person-to-person.
When toxic gases, liquids or solids are released into the environment, either intentionally or unintentionally, it is considered a chemical release. These have the potential to poison people and the environment.
Either caused intentionally or unintentionally, explosions can include incidents such as industrial accidents, infrastructure failures and terrorist attacks.
It is important to be prepared in case you are caught in or near an explosion.
Nuclear power plants supply 15 percent of the electricity used in the United States today. Most likely, a radiation or nuclear emergency would be the result of an accident, but it could also be an act of terrorism or international aggression.
Terrorism is defined as the use of violence and threats to intimidate or coerce an individual or group. These types of attacks can be biological, radiological, explosive or chemical in nature.
Every part of the United States is susceptible to terrorist attacks.
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