Ebola can incubate for up to 21 days before any symptoms appear. There is probably nothing to worry about but they are erring on the side of caution as opposed to what we are doing in this country which appears to be throwing caution to the wind, at least so far.
But I fully agree with the greater issue that almost no one involved in that medical CF should be allowed to travel or have contact with crowds until we are positive no transmission has taken place.