Federal and State Quarantine and Isolation Authority

"In the wake of increasing fears about the spread of highly contagious diseases, 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.

The public health authority of the states derives from the police powers granted by their constitutions and reserved to them by the Tenth Amendment to the U.S. Constitution. The authority of the federal government to prescribe quarantine and other health measures is based on the Commerce Clause, which gives Congress exclusive authority to regulate interstate and foreign commerce..."

Quarantine law