If all U.S. producers were able to get access to vaccines developed to address porcine circovirus associated disease and use them, the number of slaughter hogs might increase about 1 percent above current levels, estimates Ron Plain, agricultural economist at the University of Missouri.

While that may not sound like much, he points out that based on history, it would take “one heck of a disease event” to account for more than a 1 percent reduction in slaughter.