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President Barack Obama expressed cautious optimism about the Ebola situation in the United States on Wednesday after the U.S. government imposed new screening measures for travelers from West Africa.

Obama sat down for talks with his Ebola response coordinator, Ron Klain, on Klain's first day on the job since he was appointed last Friday. They were joined by other top officials.

"The key message I want to deliver, although obviously people had concerns with Mr. Duncan and our hearts still go out to his family, as well as nurses infected, is that in fact what we're seeing is that our public health infrastructure and systems should give the American people confidence that we're going to be in the position to deal with additional cases of Ebola without it turning into an outbreak," Obama told reporters.

Obama, speaking to reporters, said he is confident that hospitals in Texas and Ohio are prepared if cases of Ebola emerged there.