As of right now, I do not think that polio can be completely eradicated. While I do believe that polio has been eradicated in the United States and Canada, for it to be eradicated in the third world countries would take a lot of effort and time. Polio can be spread through bodily fluids. So in countries where hygiene is poor, polio can reappear quickly in society. Though if people are vaccinated against polio, they are much less likely to become infected and have a better chance of fighting it off before major symptoms occur. Being vaccinated does not mean that someone is one hundred percent immune. So if there is not a vaccine that can completely immunize someone against the virus, someone may still have it. As long as one person is infected, it will never be eradicated.
Practice Opening
Within twenty years I do not think that polio can be completely eradicated. Even though many people are vaccinated, were will always be someone in the world who is not.
Rowan Counterintuitive 
Grade Neutral
LikeLike