Before revision: This research quantifies the various South African lockdown regimes, for the SARS-CoV-2 pandemic, in terms of the basic reproduction number, r_0. It further calculates the levels of immunity required in order for these selfsame lockdown regimes to begin to work  .
After revision: This research quantifies the various South African lockdown regimes, for the SARS-CoV-2 pandemic, in terms of the basic reproduction number, r_0. It further calculates the levels of immunity required in order for these selfsame lockdown regimes to begin to work and predicts perceived values, should infections have been underestimated by a factor of 10. The latter results are compelling .