date:May 29, 2013
DV over ran southern China killing more than 1 million piglets. The death rate for virus-infected piglets ranged from 80 percent to 100 percent.
Biosecurity measures in the U.S. food supply have been beefed up over the years, and especially after the outbreaks of mad cow disease and swine flu. Both outbreaks posed risks to human health.
Today, trucks carrying live animals are supposed to be cleaned before entering and leaving farms. At commercial hog operations, visitors routinely shower and c