Hello; I made the above statement some days ago. The link above is a decent read with regard to the idea some significant portion of the population may be naturally immune to the new virus. I think their estimate (Guess in other words) is maybe as much as 50% of people will not become ill if exposed.
A guess of my own from months ago I made in another now closed thread (Ebola 2) is repeated in the link. That being the covid19 new virus is kin to the corona virus that can cause a common cold. The guess being that if you happen to have had one or more of the common cold causing virus, that you may have already some protection from the covid19. A fly in this theory ointment is I think there are over 100 known common cold virus strains. I have had a lot of colds in my life but have no way of knowing if I had one of the cold virus that will be of value now.
How do they come up with their notion? Seems they were setting up some tests and decide to use blood drawn well before the covid19 as a standard for comparison. Seems some of the blood already was able to react with the new virus so they did some more thinking.
Good news if true. It means we might have started out at 50% or so herd immunity from the get go. This means we could be very much closer to the 70 to 80% herd immunity than previously thought. At the higher herd immunity numbers the virus will begin to find fewer and fewer it can infect and will begin to fade. Let us hope.
