Flu (Korean: 감기; RR: Gamgi; alternatively titled The Flu) is a 2013 South Korean disaster film written and directed by Kim Sung-su, about an outbreak of a deadly strain of H5N1 that kills its victims within 36 hours, throwing the district of Bundang in Seongnam, which has a population of nearly half a million people, into chaos. It stars Jang Hyuk and Soo Ae