----- Isolation and quarantine are two common public health strategies designed to protect the public by preventing exposure to infected or potentially infected people.
----- In general, isolation refers to the separation of people who have a specific infectious illness from those who are healthy, as well as restriction of their movement, to stop the spread of the illness. Today, isolation is a standard procedure used for patients with tuberculosis and certain other infectious diseases.
----- Quarantine, by contrast, generally refers to the separation and restriction of movement of people who, while not yet ill, have been exposed to an infectious agent and therefore may become infectious. Quarantine, like isolation, is intended to stop the spread of infectious disease.
----- Both isolation and quarantine may be conducted on a voluntary basis or compelled on a mandatory basis through legal authority.
State and Local Law
----- A state's authority to compel isolation and quarantine within its borders is derived from its inherent "police power"--the authority of a state government to enact laws and promote regulations to safeguard the health, safety, and welfare of its citizens. As a result of this authority, the individual states are responsible for intrastate isolation and quarantine practices, and they conduct their activities in accordance with their respective statutes.
----- State and local laws and regulations regarding the issues of compelled isolation and quarantine vary widely. Historically, some states have codified extensive procedural provisions related to the enforcement of these public health measures, whereas others rely on older statutory provisions that can be very broad. In some jurisdictions, local health departments are governed by the provisions of state law; in other settings, local health authorities may be responsible for enforcing either state laws or more stringent local measures. In many states, violation of a quarantine order constitutes a criminal misdemeanor.
----- Examples of other public health actions that can be compelled by legal authorities include disease reporting, immunization for school attendance, and tuberculosis treatment.
----- The Secretary of Health and Human …