Less developed societies register less sickness from Covid-19 than developed societies. The science is mounting particularly from Africa and leading to considerations that achieving “herd immunity” is the best path forward for less developed countries.
The more and better you look, the more you find. South Africa and Morocco, for example which are pretty developed countries, report virus impacts more similar to Europe than Kenya or Cameroon. On the other hand, there are intriguing anti-body studies in sub-Saharan Africa which suggest something more might be at work protecting Africa.
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