Don't forget that South Africa was due to buck the trend. With anything up to 80% estimated exposure, and having gone through the Delta wave, plus only 34% vax rates, it was poised to prove it all a big lie and not go through such a big fourth wave, if any. They had to somehow manufacture the wave (add antigen tests), as well as push the fear buttons to quickly get everyone lined up for the jab. That would sufficiently obscure the data proving that prior exposure is proving to be far more effective as a herd immunity strategy.