From the Summary: "In the wake of recent terrorist attacks and increasing fears about the spread of highly contagious diseases, such as severe acute respiratory syndrome (SARS) and pandemic influenza, federal, state, and local governments have become increasingly aware of the need for a comprehensive public health response to such events. An effective response could include the quarantine of persons exposed to infectious biological agents that are naturally occurring or released during a terrorist attack, the isolation of infected persons, and the quarantine of certain cities or neighborhoods. [...] This report provides an overview of federal and state public health laws as they relate to the quarantine and isolation of individuals, a discussion of constitutional issues that may be raised should individual liberties be restricted in a quarantine situation, and federalism questions that may arise where federal and state authorities overlap. In addition, the possible role of the armed forces in enforcing public health measures is discussed, specifically whether the Posse Comitatus Act would constrain any military role, and other statutory authorities that may be used for the military enforcement of health measures."
CRS Report for Congress, RL33201