https://twitter.com/drharshvardhan
Dr. Harsh Vardhan has keenly taken it to its fruitful conclusion as well.
The initiative to check polio started way back in 1978, with permanently disabled population still available across 5 alive generations. This number is likely to shrink rapidly in the next two decades, provided the polio vaccination program is kept abreast with advancing deadliness of poliovirus [1] and state's ability to maintain free vaccination.
[1] http://en.wikipedia.org/wiki/Poliovirus
[Edited: Span of generations across which polio afflicted patients could be found is 5 and not 3 as per my original comment.]