• Office of Emergency Management
    1500 Marilla St.,
    Dallas, Texas 75201
    Phone: (214) 670-4275
    Fax: (214) 670-4677

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    ​​​​​Biological Threats

    A biological attack is the deliberate release of germs or other biological organisms or toxins that can kill or incapacitate people, livestock and crops. 

    Delivery methods include:

    • Aerosols - biological agents are dispersed into the air, forming a fine mist that may drift for miles. 
    • Animals - some diseases are spread by insects and animals.
    • Food and water contamination - some pathogenic organisms and toxins may persist in food and water supplies. Most microbes can be killed, and toxins deactivated, by cooking food and boiling water. Follow official instructions.
    • Person-to-person - Humans have been the source of infection for smallpox, plague, and the Lassa viruses. 

    Specific information on biological agents is available through the Centers for Disease Control and Prevention.