African swine fever has reached more than 50 nations, according to the World Health Organization, and experts say chances are increasing that it will surface in North America. Experts say contaminated animal feed is the most likely way it could reach domestic pigs, but there are other possible routes of transmission, and the USDA's Animal and Plant Health Inspection Service has been coordinating drills to help states and the industry prepare.
US pork industry braces for outbreak as ASF spreads abroad
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