Exactly!  Thank-you.  
To understand every detail of how terrain and germs combine to sicken us would probably be hours upon hours of research.  I admit that I haven't done days and weeks of research on this one yet.  
BUT what I do know, is that not everybody gets sick when they are exposed to other ill people.  

And on top of that, many times the vaccinated are more likely to get sick than the unvaccinated, which I have seen first hand with whooping cough and chickenpox where the vaccinated child gets a bad case of whooping cough, but my 3 unvaccinated children DID NOT get it even after playing with the infected child day after day.  And with chickenpox, when my 3 children were exposed only one got full symptoms, one got only fever, and one got zero symptoms.

The reason why we get sick or not sick is multi-faceted and vaccination is an extremely over-simplified approach that in the end weakens the overall health of the host.

If medical science spent more time discovering who is susceptible to harm from illness, why and under what conditions, then they could easily discover much much better solutions than vaccinations could ever hope to offer.  But instead they cling to a failing method while our population gets more and more chronically ill than ever.

hmmm... maybe I should have put all of that in the article instead of in the comments.  
But thanks for commenting and drawing that out of me ... lol.