Moon founded the Holy Spirit Association for the Unification of World Christianity (HSA-UWC) in Seoul on 1 May 1954. It expanded quickly in South Korea and by the end of 1955, had 30 centers all over the country. On 15 August 2012, Moon was claimed to be gravely sick and was put on a respirator at the intensive care device of St. Mary's Hospital at The Catholic University of Korea in Seoul.