REMAIN CALM! ALL IS WELL! U.S. Officials Urge Calm in Face of Ebola Concerns.

Related: Critics say Ebola case mishandled from the start.

UPDATE: White House Pushes Back Against Ebola Critics.

ANOTHER UPDATE: Dallas Ebola case spurs concern about hospital readiness.

MORE: Via the comments below, a report from a presentation on Ebola.

Also: Richard Fernandez: My Hull Is So Big And The Leak Is So Small. “The CDC is saying that they have a revolver with thousands of chambers and only of them has a cartridge in it. Mobley is saying that’s true but if you keep playing Russian Roulette long enough you’ll eventually hit upon a loaded chamber. Spin the wheel enough times and eventually Ebola gets lucky. The more Ebola patients there are worldwide the more times you spin the wheel. Dr. Mobley is saying that if the disease keeps exploding in West Africa the wheel will get spun too often. Someone will get through, because even though the chance of arriving is individually small, there are just too many individuals who might potentially try to get through. . . . One result from this analysis is that no one is really safe from Ebola until the the locus of the disease has been beaten down. No matter how you isolate, the plague is out there. You are then like Prince Prospero in his castle, safe for so long as the Red Death cannot scale your fortress wall. But if he does the problem starts again. . . . Parenthetically, what is really interesting is where the ‘Precautionary Principle’ has gone to. The administration used to be really worried about the long shot odds that Michael Mann’s climate model might be right. But it doesn’t worry about Ebola odds. Maybe we should apply the Precautionary Principle all of the time or none of the time. But it’s altogether too confusing to apply it in this uneven manner.”

STILL MORE: Via the comments: New York Times Readers React to Suggestion We Should Ban Travel from Outbreak Countries: Racism!, Racism!, Racism!