by Susan NJANJI JOHANNESBURG, South Africa (AFP) — Scientists in South Africa said Thursday they had detected a new Covid-19 variant with a large number of mutations, blaming it for a surge in infection numbers. The number of daily infections in Africa’s hardest-hit country has increased tenfold since the start of the month. “Unfortunately we have detected a new variant which is a reason for concern in South Africa,” virologist Tulio de Oliveira told a […]