H,
but in my experience, and that of many others, no virus can take hold within the body, unless it has a "medium" within it to thrive: toxemia. This is the reason I have not been the victim of any viral infection (or any other disease) for over 30 years.
How many people can say that?
In addition, if the body is supplied with optimum nutrition, and by that I mean an organic plant-based diet, including supplementation of those nutrients which are nigh on impossible to obtain from the diet alone such as VitaminD3, iodine, and Vitamin C, then that is the very simple answer to what some make into a very complicated response.