Public health emergency preparedness refers to the precautionary measures the government takes against public health threats. According to the United States Center for Disease Control and Prevention (CDC), public health threats include "natural, biological, chemical, radiological, and nuclear incidents." The CDC (or equivalent departments in the federal governments of other nations) helps the nation and its people prepare for potential public health disasters. The organization's employees regularly monitor potential public health threats so they can respond to incidents immediately when they occur. Moreover, they coordinate with emergency preparedness teams on the state and local levels and provide instructions for individuals who want to be prepared for potential public health emergencies. Ultimately, the goal of public health emergency preparedness is to prevent public health disasters, if possible, and to minimize the damage if they cannot be prevented.