SEOUL, Oct. 2 (Xinhua) -- South Korea on Wednesday reported two more confirmed cases of African swine fever, a viral animal disease that had no cure nor vaccines found yet.

Both cases were found at pig farms in the northwestern border city of Paju, Gyeonggi province where the first-ever case was spotted on Sept. 17, according to the country's Ministry of Agriculture, Food and Rural Affairs.

With the two more confirmed cases, the total number of outbreaks increased to 11 in just two weeks.

All the confirmed cases were found in areas near the border with the Democratic People's Republic of Korea (DPRK). Other suspected cases in areas south of the capital Seoul tested negative.

The quarantine authorities issued a standstill order early Wednesday to place the western Gyeonggi and the eastern Gangwon provinces on lockdown. The two provinces border the DPRK.

During the 48-hour standstill period, all pigs, relevant equipment and people at pig farms are banned from moving.

A possibility remained open for additional cases of the deadly viral disease to be found, given the incubation period of up to 19 days.

The quarantine authorities have culled pigs within a 3-km radius of the affected farms, larger than the required 0.5-km radius.

Because of the 11 confirmed cases, more than 110,000 pigs were reportedly to be slaughtered. It took up nearly 1 percent of the total pigs being raised in the country.