[Halls]

http://en.wikipedia.org/wiki/John_H._Hager

[iowamark]

Hager contracted polio in 1974 when his son was vaccinated for the disease. As a result, he uses a nonmotorized wheelchair for daily ambulation.

I have never heard of anything like that before!?

[Mr. Brightside]

From Wiki:

(John) Hager contracted polio in 1974 when his son was vaccinated for the disease. As a result, he uses a nonmotorized wheelchair for daily ambulation.

What???????

Dad contrtacted polio because the son was vaccinated?