Ebola screenings are set to begin Thursday at Hartsfield-Jackson International Airport in Atlanta and the head of the Centers for Disease Control said isolating patients who may have traveled to West Africa should be the focus of healthcare workers across the country.

Dr. Thomas Frieden addressed the media Monday from CDC headquarters in Atlanta. He said screenings began at New York City’s JFK airport Sunday and 91 people had undergone evaluation. Of those, none of them had fevers and screeners determined none of them had been exposed to Ebola.

Frieden emphasized again that there would be no benefit to halting travel to and from the impacted region.

“But we recognize that until we stop the outbreak in West Africa, there is no way to get the risk in the U.S. to zero,” explained Dr. Frieden. “What we can do is stop it’s spread within the U.S. and minimize the possibility that we have other cases here and that’s exactly what we’re doing.”

The CDC Director also took time to publicly apologize for what he deemed a misinterpretation of remarks he made Sunday. Frieden had said that a “breach in protocol” lead to the infection of a nurse who was treating the first patient diagnosed with Ebola in the U.S. in Dallas.

“Some interpreted that as finding fault with the hospital or the healthcare worker and I’m sorry if that was the impression given. That was certainly not my intention,” Frieden said.

He emphasized that the CDC is still investigating how that nurse became infected. Frieden reported she was in stable condition.

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