It could also be due to Hydroxychloroquine, which is taken regularly to prevent/treat malaria. Here’s a link to search results:
https://presearch.com/search?q=hydroxychloroquine+africa+malaria
Easy to explain. We are like the overprotected chickens in the chicken farms. Protected and xaxed for several different things so have a weak immune system. In many 3rd world countries they survive by their body immune system so it is stronger to repel foreign or new viruses.
I was given the unapproved, experimental anti-malaria drug, mefloquine when I served in Somalia in 1993 in addition to a slew of some inoculation cocktails.
the stuff apparently caused a lot of neurological damage in soldiers deployed there (do your google searches for more info)
BUT
A) Myself and family did not get vaxxed against covid
B) I went to work everyday during the scamdemic
C) Not only did no one in my home get covid, but we never even went to get tested once during the entire scam.
so perhaps anti-malaria drugs do have some impact on whether or not you get “sick” from covid.
We have a winner.