Regular meat inspections detected African swine fever in vacuum-packed pork sausage being brought into Japan by a person coming from Beijing, according to Reuters this week.
Bringing pork meat and products from China into Japan is prohibited, but this is the third case of the disease being found in pork products. In South Korea, two instances of livestock products from China also carried the virus.
It was unlikely the pork was infectious, as it was vacuum packed and heat treated, ministry officials say, but more testing is being done in Tokyo.
Japan has since tightened quarantine operations at airports and seaports, especially from those traveling from areas infected with the disease.
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