H3N2 Swine Flu - Exactly how dangerous is it?

So I was reading up on my local news, and came across a statement saying there were warnings of H3N2 swine flu going around. Their direct statement:

"The CDC said in one week, the cases of the Swine Flu sharply increased from 29 reported to 158.

The new strain they're seeing is H3N2, different from the H1N1 pandemic a few years ago. Fair exhibitors are being told to only show healthy animals, and state and federal animal health officials will be around to check."

How dangerous is it? Is it extremely fatal?
H3N2 Swine Flu - Exactly how dangerous is it?
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