Thank-you Psalm_51.10 for your question - if I may please:
Isn’t it similar to the common cold?
Some people come into contact with others who have it and they get it.
So if the “terrain is everything and the microbe nothing” then isn’t it proof that the terrain is poisoned - inner body and outer environment. There are so many poisonings: too many to list here; including childhood vaccinations etc.
And the vast majority on earth are poisoned and living in poisons to varying degrees.
Which is all effectively aided - probably led by? - the mind poisoning: with all the lies in virtually every walk of life. The ability and therefore the will to resist the succumbing is compromised by the chronic lack of truth (John 8:23).
So in scientific terms isn’t at least a part of the answer just simply a matter of quantities; including on the opposite side the quantity of ability to resist - "immunity"? and faith!
And the quantity of Covid vaccinated should reach record levels.
So how would the rest not be tipped off their precarious health fences onto the negative side under these circumstances?
P.S.
And THEY'LL probably just turn up the microwaves (5G etc.) at the appropriate time/s to make sure the poisons cook/ speed-up the desired nefarious effects.