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>but the concern is really more for the number of rather serious mistakes that have been made.
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The US population will probably make a few million mistakes today, many of them "rather serious."
In fact, almost a hundred of our fellow citizens die each day because of "rather serious" traffic mistakes that were for the most part avoidable.
Most of our citizens deal with automobiles in one way of the other just about every day of their adult lives.
I'd expect them to be able to handle them without making fatal errors- but they do, and often.
Even professionals, like truck drivers and race drivers make them.
Lots to be concerned about for sure, but that's what people do.

On the other hand, this is the first time people here have had to deal with Ebola.
From what I've read, the one person who died might have lived had the people involved been more knowledgeable and reacted sooner and the two people who have contracted it could have used different precautions, had they and their managers had more experience- which, of course, they couldn't possibly have had.
As far as I can tell, the people involved are plugging the holes as soon as they appear and are doing the best they can.
So what is the concern for " the number of rather serious mistakes that have been made?"