Prohibition or restriction on travel or passage, imposed to keep contagious diseases, or harmful chemicals/biologicals from spreading. Quarantine
is not the same as isolation. Isolation refers to the separation of persons who have a specific infectious illness from those who are healthy and the restriction of their movement to stop the spread of that illness. Isolation allows for the focused delivery of specialized health care to people who are ill, and it protects healthy people from getting sick. In sum, isolation is for
treatment of a known illness and quarantine is for observation of possible exposure to an agent.