The polio vaccine prevents an infection that can lead to paralysis or death. Learn who should get it and when, plus the risks ...

Polio, a highly contagious viral infection that ... The most common side effect is a sore arm after the shot. "The injected vaccine does not carry any significant side effects," Dr.

When the body is exposed to the killed polio vaccine, its immune system will set up a defense that will attack any live polio viruses that it may encounter later. To produce this vaccine ...