DALLAS — A woman who has been confined to her Dallas apartment under armed guard after a man infected with Ebola stayed at her home, said she never imagined this could happen to her so far from disease-ravaged West Africa.

Louise Troh said Thursday that she is tired of being locked up and wants health authorities to decontaminate her home.

Authorities say the circle of people in the U.S. possibly exposed to Ebola widened after the man, who arrived from Liberia last month, was discharged from a hospital without being tested for the deadly virus.

The confinement order, which also bans visitors, was imposed after the family failed to comply with a request to stay home, according to Dallas County Judge Clay Jenkins. Texas State Health Commissioner David Lakey said the order would ensure Troh, her 13-year-old son and two nephews can be closely monitored for signs of the disease.

The first Ebola diagnosis in the nation has raised concerns about whether the disease that has killed 3,300 people in West Africa could spread in the U.S. Federal health officials say they are confident they can keep it in check.

Troh said she had imagined she would be safe from the grasp of the virus thousands of miles from her native Liberia, the worst-hit country.

“No one thinks this will happen,” she said in an interview with The Associated Press. She said she and her family are “stressed” about being confined to their home.

“Who wants to be locked up?” she said. Private security guards and sheriff’s deputies blocked the entrance to the 300-unit apartment complex to dozens of reporters.

Troh was waiting for health officials to collect the bed sheets and towels that Thomas Eric Duncan used when he stayed at her home before his Ebola diagnosis.

A hazardous material crew arrived to decontaminate the apartment Thursday evening but didn’t have the required permits to clean and remove hazardous waste, city spokesman Richard Hill said. The crew, contracted by the county and state, would return Friday to complete the job. The family must be relocated before the cleanup can begin, Hill said.

“The challenges are real,” CDC director Dr. Tom Frieden said Friday on ABC’s “Good Morning America” when asked about Troh’s situation. But, he said, “I am confident that we will get it sorted out today.”

He was asked on NBC’s “Today” show why the apartment wasn’t immediately cleaned.

“The details of that you’d have to refer to the folks in Dallas,” Frieden said Friday. “But this is, after all, the first time we’ve ever had a case of Ebola in the U.S. and there are issues to make sure that when things are removed that it is not going to be disposed of in any way that could potentially be a risk.”