Customers are seen at a supermarket in Johannesburg, South Africa, April 5, 2020. The total number of confirmed COVID-19 cases in South Africa has risen to 1,655, Health Minister Zweli Mkhize said on Sunday. (Photos: Xinhua)

Staff members of a supermarket work in Johannesburg, South Africa, April 5, 2020. The total number of confirmed COVID-19 cases in South Africa has risen to 1,655, Health Minister Zweli Mkhize said on Sunday.

People walk past closed shops in Johannesburg, South Africa, April 5, 2020. The total number of confirmed COVID-19 cases in South Africa has risen to 1,655, Health Minister Zweli Mkhize said on Sunday.

A vendor sells newspapers on a street in Johannesburg, South Africa, April 5, 2020. The total number of confirmed COVID-19 cases in South Africa has risen to 1,655, Health Minister Zweli Mkhize said on Sunday.

Staff members wait at the entrance to disinfect customers at a supermarket in Johannesburg, South Africa, April 5, 2020. The total number of confirmed COVID-19 cases in South Africa has risen to 1,655, Health Minister Zweli Mkhize said on Sunday.

People wait outside a supermarket in Johannesburg, South Africa, April 5, 2020. The total number of confirmed COVID-19 cases in South Africa has risen to 1,655, Health Minister Zweli Mkhize said on Sunday.