Twenty days after a highly pathogenic avian influenza virus was first detected in South Korea, the epidemic shows no sign of abating. Nearly 3.4 million poultry had been culled as of Monday morning. According to the Ministry of Agriculture, Food and Rural Affairs, some 2.5 million chickens, 790,000 ducks and 71,000 quails have been slaughtered nationwide as part of the quarantine, after nearly 70 farms were confirmed or suspected of having avian influenza, or bird flu, outbreaks. Most of the ducks were culled at farms in Eumseong and Jincheon in North Chungcheong Province, two of the hardest hit areas. Those two places account for more than half the farm ducks in North Chungcheong Province. So far, 69 farms in seven cities and provinces have confirmed H5N6 cases since Nov. 16, when the H5N6 strain of bird flu was first reported at a chicken farm in Haenam, South Jeolla Province.