Watched Your Vdo On You Tube About Contaminated Polio Vaccine.

Watched your vdo on you tube about contaminated polio vaccine. It as great and very helpful. But you have not mentioned that what should be done if contaminated polio vaccine is already given to child and before that how to find whether the given vaccine is contaminated or not. How to and where to perfo rm stool examinations to find strains of polio type 3 virus. Plz guide.