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JFK airport screening for Ebola: 'We can't get the risk to zero'

New York's JFK airport has started a health screening programme to try and stem the Ebola outbreak.

Passengers arriving from Liberia, Sierra Leone and Guinea will have their temperatures taken and they will have to answer a series of questions about their health.

Martin Cetron, director for the Division of Global Migration and Quarantine at the Centers for Disease Control said they cannot get the risk to zero but they can add an additional level of security.

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