The global economic outlook is fragile as debt problems persist in rich nations and the recovery remains anemic, especially in the United States, economist Nouriel Roubini said on Monday.

Brazil's economy, meanwhile, is showing signs of overheating, Roubini, who heads U.S.-based economic consultants RGE Monitor, told attendants at a seminar in Sao Paulo.

(Reporting by Guillermo Parra-Bernal and Aluisio Alves)

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