In 2010, Dessay performed in "La sonnambula" at the Opéra Bastille. Due to illness, she cancelled the final two performances in the run as well as the upcoming "Hamlet" at the Met, where she was replaced by Marlis Petersen. After performing her last "La sonnambula" at the Vienna State Opera, on 20 April 2010 she was awarded the title of Austrian Kammersängerin. She then returned to the London for "La fille du régiment". She debuted in Russia in a solo concert with the Mariinsky Theatre Orchestra on 18 June, and also participated in the 150 anniversary concert of the theatre on 17 September. She performed in a joint concert with Juan Diego Flórez at the Chorégies d'Orange, before going on Teatro Regio di Torino's Japan tour of "La traviata".