What's in the Polio insert?

First, let's discuss what Polio is according to the CDC.

And a quick overview of what the CDC recommends to prevent polio.

Do pediatricians know the product given as early as 2 months old has a potential life-threatening adverse reaction (anaphylactic shock)? And is recommended 4 doses in order to be effective?

That’s 4x the possibility of anaphylactic shock to potentially avoid a poliovirus that could potentially cause poliomyelitis. 

The CDC states 72% of those with poliovirus will not have any visible symptoms. And those that do will have flu-like symptoms. If the poliovirus infection develops further into poliomyelitis, the CDC states more serious symptoms can occur including paresthesia... which is listed as an adverse reaction by the manufacturer.

Read that again. One of the severe symptoms that only a small percentage of polio cases develop is an adverse reaction to the product to avoid that very symptom. This is not what “effectiveness” looks like.