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Photo taken on March 22, 2020 shows the empty Nelson Mandela Square in Johannesburg, South Africa. South Africa on Sunday reported 34 new COVID-19 cases, bringing the country's total to 274. (Xinhua/Chen Cheng)

Photo taken on March 22, 2020 shows the empty Nelson Mandela Square in Johannesburg, South Africa. South Africa on Sunday reported 34 new COVID-19 cases, bringing the country's total to 274. (Xinhua/Chen Cheng)