The impacted farm is located in Bielsk Podlaskie near the border with Belarus.
Experts have said it may take years to contain African swine fever due to the differing biosecurity standards on commercial pig farms and backyard smallholdings across Asia.
A dead pig at the Sheung Shui abattoir tested positive for African swine fever, prompting a culling at the government-owned slaughterhouse.
North Korea reported to the World Organization for Animal Health (OIE) an outbreak of African swine fever on a farm in Jagang province.
Vietnam’s Minister of Agriculture and Rural Development said that the government should freeze safe pork at the onset of an African Swine Fever outbreak or there will not be safe meat in the next few months.
The World Organization for Animal Health (OIE) says it will be years before China can contain African swine fever and has launched a global initiative to try to keep the disease in check.
African swine fever virus, first detected in Vietnam in February, has spread to 42 of the country's 63 provinces.
Scientists have concluded that a vaccine for African swine fever is eight years away, US Department of Agriculture (USDA) Undersecretary for Marketing and Regulatory Programs Greg Ibach said Thursday, May 23, during testimony to Congress.
According to state media, China will start work on clinical trials of a newly developed African swine fever vaccine.
Diseases that are endemic are more difficult to stamp out by quarantining and culling livestock.