The Centers for Disease Control and Prevention (CDC) has been at the epicenter of health communication efforts. Not only is the CDC a primary practitioner of health communication in the form of heath promotion, it has also used risk communication strategies to address emerging threats such as the anthrax attacks, the threat from smallpox, Sudden Acute Respiratory Syndrome (S ARS), and the risk associated with pandemic influenza. Recently, however, the CDC has begun to integrate strategies for crisis communication as the agency has adopted responsibilities most often associated with first responder groups.