A nurse stands on a testing vehicle in Johannesburg, South Africa, April 21, 2020. South Africa's COVID-19 cases have surged to 3,300, up by 142 from the previous count, Health Minister Zweli Mkhize said Monday. There has been a significant increase in mass community screening and testing across provinces, according to Mkhize, adding tests have been conducted on 121,510 patients in both public and private sectors. (Photos by Shiraaz Mohamed/Xinhua)

A nurse works on a testing vehicle in Johannesburg, South Africa, April 21, 2020. South Africa's COVID-19 cases have surged to 3,300, up by 142 from the previous count, Health Minister Zweli Mkhize said Monday. There has been a significant increase in mass community screening and testing across provinces, according to Mkhize, adding tests have been conducted on 121,510 patients in both public and private sectors.