I wouldn't vaccinate against polio, for the same reason I wouldn't vaccinate against smallpox: it is not relevant for people in my area, and mistakes have happe

I wouldn't vaccinate against polio, for the same reason I wouldn't vaccinate against smallpox: it is not relevant for people in my area, and mistakes have happened where polio vaccines have led to polio. Extremely rare, but when the benefit is zero, it still outweighs it. If polio had been endemic in my area, I would have vaccinated.