This is how flawed vaccination policies implemented by the WHO in 1970s led to polio paralysis in India.
As per a study by G Mudur titled Flawed immunisation policies in India led to polio paralysis published in the BMJ in 1998:
In accordance with World Health Organization (WHO) recommendations, India introduced 3 doses per child of oral poliomyelitis vaccine (OPV) into its immunization program during the late 1970s.
It was hoped that infants would be protected from polio after hav...