MOSCOW, November 9 -- The dysentery diagnosis has been confirmed for 49 participants in the Art World festival in Sochi, including 47 children, a source in the Federal Consumer Rights and Human Well Being Service told Itar-Tass. Doctors say their condition is satisfactory, he said. The dysentery diagnosis was cancelled for 170 hospitalized participants in the festival. According to the preliminary information, the disease was contracted from a cake