Cold messed it up and they ended up depositing it in the north pole.
Just thinking out of the box!

Pack all of mankind into a smaller environmentally delicate area that would require massive expenditures of energy to live in and place us much closer together so airborne viruses such as influenza could spread?

You are kidding, right?

SURVIVAL OUTSIDE HOST: The virus can survive in liquid or dried material for a number of days (23). Infectivity is found to be stable at room temperature or at 4°C for several days, and indefinitely stable at -70°C (6, 20). Infectivity can be preserved by lyophilisation.

http://www.msdsonline.com/resources/msds-resources/free-safety-data-sheet-index/ebola-virus.aspx

Oh, wrong movie.

ebola can live everywhere going to the north pole will not save us

Sunlight and exposure to air both kill it.

or do we not want to open that can of worms debate?

I think it would be quite a long way for bats to fly....

So I was thinking if we just skedaddle to the north pole and huddle up, we will be a-ok!

but of you take any well traveled humans with you ...............

You bring the Baileys

You can expect the virus to remain alive longer on contaminated surfaces during colder times/ AC. If it's inside an air-conditioned hospital not exposed to light say on a door or elevator button, it could potentially remain viable as a small surface deposit for days instead of hours.

In deep cold, I rather think Ebolavirus might remain viable for years in certain conditions.