Individual health and immune system robustness are more significant factors in withstanding infectious diseases than pathogen virulence.

“Louis Pasteur believed incorrectly that it was about the virulence of the microbe and the other physician believed it was about the terrain and which is how healthy we are as humans that really matters most and unfortunately Louis Pasteur's ideas have been adopted and the other physician has been forgotten but the take-home message is that it's more about so much more about how healthy we are as humans how robust how many swords and spears and how much Armour our immune system has rather than the strength of any particular virus or bacteria”