The polio vaccine has caused an escalating outbreak of polio in the Philippines, according to the World Health Organization and UNICEF, which issued a joint statement admitting the vaccine is causing polio.
"WHO and UNICEF said in a joint statement the polio outbreak in the Philippines is concerning because it is caused by vaccine-derived poliovirus type 2," writes the Associated Press. "The weakened virus used in vaccines replicates for a short time in children's intestines and is excreted in their feces."
Polio vaccines are often cited as a success story proving that vaccines work to eliminate infectious disease. In truth, nearly all the cases of polio in the modern world are caused by polio vaccines themselves.
Stated plainly, more cases of polio are caused by polio vaccines than from wild polio.