On Wednesday, the country's agriculture ministry said nearly 30,000 pigs have died from the disease in North Sumatra. The virus is expected to wipe out more than half of China's pig herd this year. Australia has grown increasingly concerned, stepping up biosecurity measures to keep swine fever out. Although it's harmless to humans, the disease can kill pigs within a few days, and the fatality rate can be up to 100%, according to the World Organisation for Animal Health (OIE).
