Parasites seem to reduce mortality associated with Covid, and Africa has a high parasite burden. More research is needed, but this is a reasonably sized study (

Parasites seem to reduce mortality associated with Covid, and Africa has a high parasite burden. More research is needed, but this is a reasonably sized study (751 patients): https://pubmed.ncbi.nlm.nih.gov/34368662/ https://pubmed.ncbi.nlm.nih.gov/34368662/