Those frustrations spilled over when Mr. Obama convened his top aides in the Cabinet room after canceling his schedule on Wednesday. Medical officials were providing information that later turned out to be wrong. Guidance to local health teams was not adequate. It was unclear which Ebola patients belonged in which threat categories.

“It’s not tight,” a visibly angry Mr. Obama said of the response, according to people briefed on the meeting. He told aides they needed to get ahead of events and demanded a more hands-on approach, particularly from the Centers for Disease Control and Prevention. “He was not satisfied with the response,” a senior official said…

At the meeting on Wednesday, officials said, Mr. Obama placed much of the blame on the C.D.C., which provided shifting information about which threat category patients were in, and did not adequately train doctors and nurses at hospitals with Ebola cases on the proper protective procedures…

“It’s not that people aren’t doing anything,” a senior official said. “It’s that they’re not yet doing enough.”