CDC Virologist has stated…We have new created more New Emergences of the Polio virus than we have stopped.
It is exceedingly rare for the public health community to admit to any problems with vaccination. Every so often, however, circumstances force officials into making just such an acknowledgement. The current debacle seeping out into the news—which is actually a long-running tale minted anew—is that oral polio vaccines are “spawning virulent strains” of polioviruses. The alarming surge in vaccine-derived polio cases presents vaccine planners with a “quandary” or “conundrum”—because “The very tool you are using for [polio] eradication is causing the problem.”
The polio vaccine: a critical assessment of its arcane history, efficacy,and long-term health-related consequences READ: Polio Vaccine (thinktwice)