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Isabel Diaz Ayuso (2nd L F), president of the Madrid Region, Mayor of Madrid Jose Luis Martinez Almeida (2nd R) and staff members applaud during the closing ceremony of a field hospital built to treat COVID-19 patients in Madrid, Spain, May 1, 2020. Madrid's field hospital, which was set up at the capital's IFEMA exhibition center at the end of March to take in COVID-19 patients, was officially closed on Friday after treating some 4,000 COVID-19 patients. (Madrid Region Government/Handout via Xinhua)