Comment: Over the many centuries of health herbals and medicinals, all sold by both the benevolent and the malevolent snake oil salesman, a new medical era was entered. In the year 1907, the biggest posers and snakes to crawl out of the medical grass, were the Rockefellers and their fixer, Simon Flexner, MD. Back then, traditional medicine was usurped as new medical colleges, institutions and manufacture's were built-up and cemented. Thus, today they have become the 'official' medical establishment that we all live with, along with their government and media supporters.

To be fair, it must be noted that many in the establishment uphold their conscious Hippocratic oath, while carrying out great acts of medical skill and healing, yet their are plenty of those that cause only human wreckage by their hands (graduated at the bottom of the class, or Without Conscience, comes to mind).

"It must be remembered that even the most severely and obviously disabled psychopath presents a technical appearance of sanity, often with high intellectual capacities and not infrequently succeeds in business or professional activities for short periods, some for considerable periods .Although they occasionally appear on casual inspection as successful members of the community, as able lawyers, executive or physicians, they do not, it seems, succeed in the sense of finding satisfaction of fulfillment in their own accomplishments. Nor do they, when the full story is known, appear to find this in an ordinary activity."
--H.Cleckley, The Mask of Sanity

For the latter, their established work has become one of abject greed, control and wealth, which only adds emphasis to the word parasitical. All of that has become so much worse following the advent of decades of degraded toxic food, poison adjunct in vaccines, and now tinkering with human genetics - with injected DNA/mRNA. Their latest coup de grâce, has now born out of injection of nanobots into human bodies. Who knows what will happen next.

F. William Engdahl and others have had a look at history:

Toxicology vs Virology: Rockefeller Institute and the Criminal Polio Fraud

The Rockefeller Institute was founded from the Standard Oil fortune of John D. Rockefeller in 1901, to be America's first biomedical institute. It was modelled on France's Pasteur Institute (1888) and Germany's Robert Koch Institute (1891). Its first Director, Simon Flexner, played a pivotal and most criminal role in the evolution of what became approved American medical practice. The Rockefeller goal was to completely control American medical practice and transform it into an instrument, at least initially, for promotion of medical drugs approved by the Rockefeller interests. By then they were looking to monopolize medical drugs produced from their petroleum refining, as they had done with oil.
[...]
Simmons was also the editor of the influential Journal of the American Medical Association, a publication delivered to some 80,000 doctors across America. He reportedly wielded absolute power over the doctors' association. He controlled the rising ad revenues for drug companies to promote their drugs to AMA doctors in his journal, a highly lucrative business. He was a key part of the Rockefeller medical coup that was to completely redefine acceptable medical practice away from remedial or preventive treatment to use of often deadly drugs and expensive surgeries. As head of the AMA Simmons realized that the competition from a proliferation of medical schools, including then-recognized chiropractic, osteopathy, homeopathy and natural medicine, was lessening income of his AMA doctors, as the number of medical schools had increased from around 90 in 1880 to over 150 in 1903.

Did psychopath Rockefeller create the Spanish Flu pandemic of 1918?