Individuals flying in from Liberia, Sierra Leone or Guinea must arrive at New York's Kennedy, Newark Liberty, Washington's Dulles, Chicago's O'Hare or Hartsfield-Jackson Atlanta airports, the Department of Homeland Security announced Tuesday. Those who do not pass through one of those five airports will have to rebook their flights due to this new requirement.

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These airports have screening procedures in place. The transportation hubs have been screening people arriving from at-risk nations since earlier this month. The new measures include the use of no-touch thermometers to check if a traveler has a high temperature, a symptom of ebola.

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