How is isolation to prevent the spread of disease different from quarantine?

Isolation separates sick people with a contagious disease from people who are not sick.

Quarantine separates and restricts the movement of people who were exposed to a contagious disease to see if they become sick.

Isolation separates sick people with a contagious disease from people who are not sick.

Quarantine separates and restricts the movement of people who were exposed to a contagious disease to see if they become sick. These people may have been exposed to a disease and do not know it, or they may have the disease but do not show symptoms.

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