We do know that, for instance, not having a polio vaccine leads to polio and often consequences like paralysis.
This is completely false.
One does not get polio because they do not have the vaccination. In fact Polio is eradicated in the US. The only cases of it are by the oral vaccination that is still offered in other countries.
The science of vaccinations is far from settled. Look at the explosion of disorders in school aged children and the amount of vaccinations that are introduced to a weak non-formed immune system. The science of vaccination is actually a huge science experiment at the expense of the most vulnerable of our society.
“Look at the explosion of disorders in school aged children”
Bad parenting.
“In fact Polio is eradicated in the US”
Before arguing against vaccines, you might look at your own argument.
it appears to be “Vaccines don’t work because the illness is eradicated by vaccination”
Incidence Rates of Poliomyelitis in US
In 1953, there were ~35,000 cases of Polio in the U.S. By 1961, that number had fallen to ~1,200, and the number continued to drop until it was, as you said, eradicated. Care to speculate as to what may have happened between 1953 and 1961 to cause this dramatic drop? Perhaps Jonas Salk and the March of Dimes had something to do with it?