The third index case imported from abroad involved Patient #12, a 48-year-old man with a history of contact for business reasons, with a Japanese patient who had tested positive for COVID-19 in Japan. This was the first case imported from a country outside China. Following entry to Korea on January 19th, the patient started experiencing muscle aches on January 20th. However, COVID-19 was not suspected because he arrived in Korea from Japan, and thus reporting/testing was delayed. Patient #14 was his wife who stayed with him for more than 10 days before COVID-19 was confirmed. She developed symptoms on January 29th and subsequently tested positive.