Vaccines are a band-aid fix for a much deeper systemic issue. The real fix is to sever the codependency of peoples separated by thousands of miles. Why should a disease outbreak in some far away Mongolian village affect me here in my village? Why are we moving to and through everyone else's villages so frequently? Coupled with a too-efficient and codependent (fragile) logistics system, look at how damaging the outbreak of a relatively minor [1] disease has proven to be. What happens when an actual black swan strikes at our codependent little global village? What then?

"The wise person reduces the importance of governments And simplifies the modes of living, So that people use fewer tools and wares And treasure simplicity in their lives, So that, though there are vehicles, People do not take them. And, though there are weapons, People do not carry them. And, though there are records, Tying knots will serve the record-keeping purpose. Thus, the highest political achievement is one In which people savor their food, Like the beauty of their clothes, Appreciate their safe and peaceful homes, Enjoy their social customs; And in which roosters and dogs Can be heard between countries; But people, all their lives, Have no need to go across the borders." - Translated by Liu Qixuan, Chapter 80 of the Tao Te Ching by Laozi

[1] relative to bubonic plague, smallpox, polio, etc.