Quarantine
Restricting the movement of exposed but asymptomatic people to limit spread.
Quarantine restricts the movement of people who have been exposed to a communicable disease but are not yet showing symptoms, in case they become infectious. The key distinction for the exam: quarantine separates the exposed-but-well, whereas isolation separates those already known to be infected. Quarantine is a public-health tool deployed during outbreaks to limit spread before illness appears.
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