Justice
The World's Fight Against Polio, in 1 GIF
India is almost "polio-free."
Polio has been gone from the U.S. since 1979. But for several other countries, it's an ongoing threat.
That's not to say there hasn't been tremendous progress. Since the introduction of a vaccine in 1988, reported cases have decreased by more than 99 percent - from an estimated 350,000 to just 223 in 2012.