An American physician who was potentially exposed to Ebola while working in Congo arrived in the United States Saturday, Politico reports.

The doctor, who has not been identified because of privacy concerns, is staying at a secure area at the University of Nebraska.

The physician is not exhibiting symptoms of the deadly virus, but Ebola can incubate for three weeks before symptoms are clear, so they are being monitored. They will be moved to a special biocontainment unit if symptoms develop.

"This person may have been exposed to the virus but is not ill and is not contagious," Ted Cieslak, an infectious diseases specialist at the medical center, told Politico.

"Should any symptoms develop; the Nebraska Medicine/UNMC team is among the most qualified in the world to deal with them."

Cieslak did not immediately respond to The Hill's request for comment.

More than 350 people have died in the Ebola crisis currently affecting Congo. The World Health Organization has said this outbreak does not pose an international threat.

This is the second largest spread of Ebola since an outbreak in West Africa killed more than 11,300 people several years ago.