NEW YORK (AP) — A stepped-up Ebola screening program that checks the temperature of travelers arriving from West Africa is starting at New York's Kennedy International Airport.

The effort to screen travelers from the three West African countries most affected by Ebola starts Saturday at Kennedy. Over the next week, the screenings will expand to Newark Liberty, Washington Dulles, Chicago O'Hare and Hartsfield-Jackson in Atlanta.

Together, those airports receive more than 90 percent of passengers from Liberia, Sierra Leone or Guinea

Health workers at Kennedy will use no-touch thermometers to take the temperatures of travelers from those countries.

Those who have a fever will be interviewed to determine whether they may have had contact with someone infected with Ebola. There are quarantine areas that can be used if necessary.

Health officials expect false alarms from travelers who have fever from other illnesses.

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