Immunization is the most effective way to mitigate the severity of flu infection, but there are many misconceptions about the flu vaccine.

Polio is a virus that can cause a range of symptoms, from very mild to extremely severe. When severe, it can lead to paralysis. Since immunization against polio, the disease has been eradicated in the US (in 1979)… until now. There are two different vaccines that protect against polio.