COBB COUNTY, Ga. -- An inmate at the Cobb County Jail is reportedly being test for Ebola.

WSB-TV reports that the man told jail officials he recently traveled to Africa after developing a fever while in custody.

He was arrested overnight and charged with DUI.

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The jail did stop accepting inmates for a time but that ban has been lifted, WGCL-TV reports.

The unnamed prisoner was transferred to another medical facility, according to WGCL.

Meanwhile, a person with possible Ebola symptoms has been hospitalized in Washington, D.C. out of "an abundance of caution," the hospital confirmed in a statement.

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.

Texas health officials expanded their efforts to contain the virus, reaching out to as many as 100 people who may have had direct contact with Thomas Eric Duncan or someone close to him.

None has shown symptoms, but they have been told to notify medical workers if they begin to feel ill, said Erikka Neroes, a spokeswoman for the Dallas County Health and Human Services agency.

The at-risk group includes 12 to 18 people who had direct contact with the infected man, including an ambulance crew and a handful of schoolchildren. The others came into contact with that core group, she said.

"This is a big spider web" of people, Neroes said.

The virus that causes Ebola is not airborne and can only be spread through direct contact with the bodily fluids -- blood, sweat, vomit, feces, urine, saliva or semen -- of an infected person who is showing symptoms. Those fluids must also have an entry point.

For example, people might get infected by handling soiled clothing or bed sheets and then touching their mouth, or if they are not wearing gloves while doing those tasks and have a cut on their hand.