The world is incredibly close to wiping out polio. This year the number of polio cases has shrunk to fewer than a dozen. And those cases are in just two countries- Afghanistan and Pakistan.
"We are definitely encouraged by the decline in number of cases," says Dr. Rana Safdar, the national coordinator for polio eradication in Pakistan. His country has seen the number of reported polio cases drop from more than 300 in 2014 to just 5 so far in 2017.