The warning of this article is absolutely necessary, but there might even be more to it than that, way more. When I was in high school, too many decades ago, my teacher said that "there are diseases we never encounter and know nothing about". That really struck me because we all know how proufound the effect of disease has been on humans. I have studied the consequences of that ever since. The first thing you notice is that in terms of diseases/vaccines and other things, what we call human progress is the removal of natural selection. No species can survive that. To keep it briefish, diseases are the primary mechanism meant to remove the de novo mutations that occur each generation. (I called them non-integral genes some four decades ago.) Call them what you want, they are broken. In my book "Genetics For a New Human Ecology" I describe how we can economically and ethically husband our genes to replace the natural selection we have removed. (I'm updating it some and there is an older version on YouTube - https://www.youtube.com/watch?v=wjVieFKevMk.)

A few things come from that. We have to do something to compensate for all the changes we have already made; vaccines, small families, older parents, etc. Husbanding our genes should make us stronger and more able to survive diseases... cuz they aren't going away. It is unlikely though that we can do much to make the immune system more effective because it is already very highly developed by evolution, and it's pretty delicately tuned anyway. Ultimately, the solution to disease will be strategic. I'm working on that, but it gets into instincts and morality which are very slippery.