Again, what is NEWS?

So, a case of Ebola has been reportedly confirmed in the US.

Of course this is news.

From today's FB feed:

So you see, a friend shares an NBC report indicating a single case of Ebola in the US.

And my reply is, what about all the other stuff that is far more deadly which is not reported in the news?

So why is Ebola news but the rest is not?