Why is there so little corona in Africa? One of the reasons: 'huge numbers of parasites in the faeces'.
The circle is getting round. The HIV research Tobias Rinke de Wit was privileged to do in the 1990's in Ethiopia came back to his memory early 2020 when COVID-19 kicked into Africa and strangely its typical symptoms seemed to remain largely absent.
Here is the story in Dutch newspaper NRC (in Dutch).