South Korea culls more than 654,000 birds to stem spread of bird flu
Quarantine workers have culled birds since mid-November when the highly pathogenic H5N6 strain hit a duck farm in Gochang, about 240 kilometers southwest of Seoul.
Highly pathogenic avian influenza refers to viruses that result in high death rates for birds, according to the World Health Organization.
Last year, South Korea was forced to cull more than 30 million birds to contain the worst outbreak of bird flu in the country's history. ■