Health officials announced Tuesday that a patient in a Dallas hospital is the first person diagnosed with Ebola in the United States. Now the Centers for Disease Control and Prevention are trying to retrace the patient's movements before being admitted for treatment in order to find any other potentially infected people.

The unidentified man traveled to Liberia in recent weeks, leaving on Sept. 19 and arriving in the U.S. on Sept. 20. According to the CDC's director, Dr. Thomas Frieden, the man did not show symptoms when he was traveling, but "four or five days later" he began feeling ill. He was hospitalized and isolated Sept. 28 at the Texas Health Presbyterian Hospital.

Health officials did not release details about how the individual is being treated or contracted ebola, due to privacy concerns.

"I can say he is ill. He is under intensive care," hospital doctor Edward Goodman said according to CNN.

Frieden did not answer whether the patient is a U.S. citizen, but did say "the patient was visiting family members and staying with family members who live in this country."

However, in a news release from the city of Dallas it was said the man "moved to Dallas from Liberia a week ago."

A CDC team will be investigating any contacts that the man had after he arrived in the U.S. and before he was hospitalized. There are no other suspected cases of Ebola in Texas according to Frieden.

"It's a severe disease, which has a high-case fatality rate, even with the best of care, but there are core, tried and true public health interventions that stop it," Frieden said. "The bottom line here is that I have no doubt that we will control this importation or this case of Ebola so that it does not spread widely in this country."

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