From the spinal cord of this monkey inoculations were made into two other monkeys with negative results.
Thus, though the study actually proves that "polio" is not contagious, it goes down in history as a great achievement of "virus isolation", proving discovery of poliovirus as cause.
...the highly specialized, neurotropically fixed virus, which has been maintained in the past by intracerebral passage in rhesus monkeys, is more likely a laboratory artifact... Claus W. Jungeblut, PhD
The first paper was published in 1954 by Enders et al... Enders... cut down dramatically on the nutrient solution and added cell-destroying antibiotics to the cell culture before introducing the allegedly infected fluid. The subsequent dying of the cells was then misinterpreted as presence and also isolation of the measles virus. No control experiments were performed to exclude the possibility that it was the deprivation of nutrients as well as the antibiotics which led to the cytopathic effects.And a few notes from me on the fakery of virus isolation by Enders...
[P]oliovirus was not actually isolated by these investigators, either. They successfully grew "filterable agents," which they assumed to be poliovirus, in human embryonic tissues.
Enders' fame as "The Father of Modern Vaccines" is perhaps due to his tremendous inheritance and elite membership in Yale's wealthiest secret society. No joke. [Ref]