A fevered Liberian national who landed at Newark Liberty International Airport on a flight from Brussels Tuesday may not have Ebola, reports NBC 4 New York.

The passenger had flown from Liberia to Brussels before arriving at Newark airport on United Airlines Flight 998 before 1 p.m., officials said. As he waited among other passengers at the customs check-in, agents selected him for a health screening based on his recent travel itinerary.

The medical screening revealed the man had a fever. He was immediately transported to University Hospital, which is contracted to take Newark Airport's medical cases. He was placed in isolation for evaluation out of caution.

Although the passenger has a fever, he has not shown other Ebola symptoms, Gov. Chris Christie told reporters.

He will likely be released from the hospital following an interview the Centers for Disease Control and Prevention officials, Christie said.

Christie signed an executive order to create an Ebola response team as the state prepares for new potential cases.

Newark is one of five national airports conducting health screenings on passengers whose travel began in Guinea, Sierra Leone and Liberia, where Ebola has been rampant, killing more than 4,500 people in the past 10 months.

The Obama administration announced Tuesday that air travelers from the Ebola-stricken zone in West Africa must now fly into one of these five airports performing enhanced health checks:

1. New York's Kennedy

2. Newark Liberty

3. Washington's Dulles

4. Chicago's O'Hare

5. Atlanta's Hartsfield-Jackson

The health screening started Oct. 11, and so far, 562 people have been examined at the five airports, according to Homeland Security. Four passengers who arrived at Dulles airport were transported to a local hospital, although no Ebola cases have resulted from the airport screenings.

Three Ebola cases have been diagnosed in the U.S. to date. Two of the cases were health care workers who contracted the virus here; the Dallas, Texas nurses were treating Thomas Duncan, who has died.