South Africa reached Covid herd immunity on May 17 2020, I have had this analysis on my computer for months, but was not comfortable to express my opinion, till I came across the Nic Lewis blog;

Daily the Medical Scientists will claim that they are still learning, I am still learning, starting with the Nic Lewis blog, and his first reference study, the study published in March by the COVID-19 Response Team from Imperial College (Ferguson20[1]) appears to have been largely responsible for driving government actions in the UK and, to a fair extent, in the US and some other countries.
I believe that South Africa is following this model, and thus, during the next week I will be researching, and invite you to participate.
Cedric de la Harpe