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A man walks at the Malakasa camp near Athens, Greece, April 6, 2020. An Afghan migrant in Malakasa was confirmed to be infected with COVID-19 on Sunday, and the camp has been locked down since then. (Xinhua/Marios Lolos)

A man walks at the Malakasa camp near Athens, Greece, April 6, 2020. An Afghan migrant in Malakasa was confirmed to be infected with COVID-19 on Sunday, and the camp has been locked down since then. (Xinhua/Marios Lolos)