The main reason for the failure of the modern medical science is that it is dealing with results and not causes. Nothing more than the patching up of those attacked and the burying of those who are slain, without a thought being given to the real strong hold.
The Delaware Estuary has sustained a human population for thousands of years, but by the end of the 19th Century, increased population and industrialization had transformed much of the upper Estuary watershed.
In the clashes between ignorance and intelligence, ignorance is generally the aggressor.