sentences:  On 26 February 2010, Eunhyuk was diagnosed with H1N1 influenza, but was set to appear as a guest at label mate Girls' Generation's "Into the New World" encore concert in Seoul, hence had to pull out and was replaced by bandmates Leeteuk and Heechul.Super Junior released their 4th studio album, "Bonamana", with similar success in Korea, sweeping awards in music programs after the release date.Their follow-up song, "Boom Boom", was choreographed by Eunhyuk and performed on music programs Inkigayo and Music Core.