Smithfield foods is sending whole carcass hogs to china, and buying on the open market to supply consumers here in the US - it's the reason pork prices here in the US are higher and will climb higher.  Parts of eastern europe and southeast asia are also dealing with this virus so global availability is down.  2.8million pounds of pork were slaughtered in the US last week and hog slaughter in 2019 vs 2018 is up 3.4% for the year.  Even when china was not "buying" US pork they were still getting it - through intermediary countries like Mexico.  a 5% upcharge from Mexico is a hell of a lot cheaper than 15-25%.