SEOUL - South Korea confirmed on Tuesday its fourth case of African swine fever at a hog farm in a town 40 km (25 miles) north of its capital Seoul, just a week after the deadly disease was first discovered in the country.
The agriculture ministry confirmed the fourth case of swine fever in the town of Paju, near the border with North Korea, after reporting the county's third case late on Monday.
Since South Korea's first outbreak of African swine fever was discovered on September 17, more than 15,000 pigs have been culled, according to data from the agriculture ministry, or about 0.1% of the country's pig population of 12.3 million pigs.
South Korea, Asia's fourth-largest economy, has raised its animal disease alert to the highest level following the outbreak and ramped up disinfection measures to try to keep the virus spreading further.
In North Korea, African swine fever virus was first discovered in May and has continued spreading there as well, a South Korean lawmaker said on Tuesday, despite the impoverished country's efforts to cull pigs and ban distribution of pork.