>>13927850Our bio system is infinitely complex. Studies that look at one component only may be interesting but ultimately fall short.
It would be more auxiliary to check every c19-positive person for a whole range of associated levels and then observe how successful their immune response is.
My guess would be: if at the time of infection your Vitamin-C, Vitamin D, Zinc, Quercitin, etc. has good levels then you will have near 100% chance of having no symptoms or mild symptoms. But it has to be all of them as they are interdependent.
Of course you also should not be fat.
Any one dimensional solution (including vax) will fail.