In fact pork prices already rose after China lost a third of its pigs to swine flu last year and ramped up imports. I believe the US has been very successful selling pigs to China.
Just to be really jolly about things, there is a new strain of swine flu in China known as G4. Many people who work with pigs have been infected, a zoonotic virus that can cross the species barrier. So far there are no known cases of human to human transmission.
So far ....