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Concept
Protective sequestration
Résumé
Protective sequestration, in public health, is social distancing measures taken to protect a small, defined, and still-healthy population from outsiders during an epidemic (or pandemic) before the infection reaches that population. It is sometimes referred to as "reverse cordon sanitaire."
Due to the disruption that protective sequestration can cause, it is typically considered only under exceptional circumstances where implementation and enforcement are feasible. It is more easily achieved in circumstances where voluntary compliance of the sequestered population is likely.
The term "protective sequestration" was coined by Howard Markel and his colleagues, in their paper that described the successes and failures of several communities in the United States in their attempts to shield themselves from the 1918–1920 Spanish flu pandemic during the second wave of that pandemic (September–December 1918). The term avoids the use of the word quarantine, which, in public health, refers to the voluntary or enforced detention of a person who, because of actual or possible contact with an infectious agent, may have become infected and therefore be capable of passing it along to others. The duration of quarantine is determined by the incubation period of the infection, i.e., the time between acquisition of the infectious agent and the development of signs or symptoms of the illness caused by that agent.
An advantage of protective sequestration is that it shields selected people from infection and possibly buys them time for the development and distribution of drugs or vaccine. A disadvantage, apart from its elitism and social and economic cost, is that those sequestered have no opportunity to develop naturally-acquired immunity to the infectious agent through contact with it, and, therefore, they remain susceptible to the agent during subsequent waves of the epidemic or pandemic.
Source officielle
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