Since the time of Louis Pasteur and his Germ Theory, the West has lived with an irrational fear of the microbe, while ignoring the importance of a balanced terrain. In a healthy terrain, there is a beneficial co-existence of all creatures, great and small. Only when the waste of one creature grows faster than a given ecosystem can handle it, will an equivalent "over" growth of some other life form rise up to meet the challenge of transforming the waste. This is not done with the purpose of terminating life, but preserving it.
It is the terrain, milieu or environment that determines health or disease, NOT the pathogen. Would that it be we had listened to Antoine Béchamp all those years ago instead of Pasteur, this planet and everything on it would be in much better shape. Except for the pharmaceutical and agricultural chemical business, that is.
As it is, the Germ Theory won the PR battle and nature became modern man's enemy. How else would you explain the unchecked desire to napalm the microbial world with drugs that leave a collateral damage footprint of chronic degradation disease planet-wide?