What does a quarantine area mean?

3 answers

A place (room, building, series of buildings) where people or animals are kept until doctors are sure they aren't carrying a disease.

http://www.answers.com/quarantine
A quarantine area means that ordinary people can't enter or leave an area. A quarantine area for dogs coming from another country, for instance, would keep these dogs away from other dogs and most people. If the dogs have a disease, it won't spread to others.

When I was a child, I had scarlet fever and our house was quarantined. No one but my dad and mom could come in and Mom and I couldn't go out. Dad had to stay out of my room.
From Merriam Webster:
3 a: a restraint upon the activities or communication of persons or the transport of goods designed to prevent the spread of disease or pests b: a place in which those under quarantine are kept
4: a state of enforced isolation

A quarantine area would be one in which the person or animal or thing is being kept away from others.