I do not think the chances of Ebola showing up here are low at all. Too many people flying all over the place.

This is deadly serious - and I do mean deadly.

http://www.kcdc-phrp.org/article/S2210-9099%2811%2900002-6/abstract
(The Osong Public Health and Research Perspectives
Korea Centers for Disease Control and Prevention)

Incubation Period of Ebola Hemorrhagic Virus Subtype Zaire

Abstract
Objectives
Ebola hemorrhagic fever has killed over 1300 people, mostly in equatorial Africa. There is still uncertainty about the natural reservoir of the virus and about some of the factors involved in disease transmission. Until now, a maximum incubation period of 21 days has been assumed.
Methods
We analyzed data collected during the Ebola outbreak (subtype Zaire) in Kikwit, Democratic Republic of the Congo, in 1995 using maximum likelihood inference and assuming a log-normally distributed incubation period.
Results
The mean incubation period was estimated to be 12.7 days (standard deviation 4.31 days), indicating that about 4.1% of patients may have incubation periods longer than 21 days.
Conclusion

If the risk of new cases is to be reduced to 1% then 25 days should be used when investigating the source of an outbreak, when determining the duration of surveillance for contacts, and when declaring the end of an outbreak.

They're more-or-less assuming a perfectly balanced bell curve. Based on data where they don't even know when the exposure happened.

That paper has guesses upon guesses in order to create a mathematical model instead of just using the real-world statistics.

Which is why there is an inconsistency regarding the time one should watch for symptoms to appear.

Which according to my post above is now estimated to be 25 days.

I heard an idiot yesterday in the grocery store say "if those "n" would stay in Africa that Ebola stuff would do our work for us". I turned around stared at him and said, "a mind is terrible thing to waste" and walked away. My husband said I was lucky he didn't whip out his gun and shoot me right there in the store. I can't stand by and listen to this stuff anymore. The assumption that only people of color are carrying this is a very troublesome idea.

Ebola is horrible, it is a terrible way for anyone to die. It will get here no doubt and we will have to deal with it. Of course if the Republicans have their way the CDC would be disbanded as well and any other health organizations that would have to deal with this and we would all be on ou

The difference is the likelihood of Ebola taking 21 days to show symptoms. It almost never takes that long. It almost always takes 10 days or less.

So with someone who did not have direct exposure, no symptoms in 10 days indicates it is extremely unlikely they caught the disease.

With someone who did have direct exposure, you wait the full 21 days to rule out that slim chance of symptoms appearing in days 11-21. Because of the higher chance that they caught the disease to begin with.

They were to leave this weekend I believe, but decided to call it off. They say it was not due to fear of ebola per se "not that contagious" but due to concerns over civil unrest resulting from the turmoil as well as worries of the students' families.