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DURHAM, N.C. — A patient has been admitted to Duke University Hospital for further evaluation and testing for potential Ebola virus infection, the hospital said on Sunday night.

Officials said the patient left Liberia and arrived at Newark Liberty International Airport on Friday, which is one of five airports screening people for illnesses linked to Ebola.

The patient had no symptoms upon arrival in the United States.

The patient arrived in Person County on Saturday and developed a fever on Sunday. The person was then transferred to Duke University Hospital.

“It is important to note that the individual’s fever could indicate other illnesses,” said a health official at a Sunday night press conference.

“We expect to know the results of this test from the N.C. Department of Health and Human Services sometime Monday morning,” the hospital said in a statement. “Meanwhile, the patient is being cared for in the same confined, isolated and secured space in which an actual Ebola patient would be treated. The patient is receiving care from a seasoned team of Duke clinical professionals who have completed extensive training to treat such a patient. We have anticipated this possibility for several weeks now and have a plan in place to manage this situation.”

“While we don’t yet know this patient’s Ebola status, it’s worth noting that the risk of transmission of the virus to any patients, visitors, employees or healthcare professionals within Duke University Hospital is extremely low and highly unlikely.”