South Africans built up immunity with each COVID-19 wave: SANBS
Data collated by the SANBS has revealed that with each new variant of COVID-19 detected in the
COVID-19 Delta variant explained
The Delta variant of the coronavirus is said to be driving the third wave of COVID-19 infections
EXPLAINER: COVID-19 variants circulating in South Africa
South Africa has seen a sharp increase in infections fanned by the Delta variant, which was first