Although it has been 50 years since the United States developed a vaccination for polio , millions of children abroad remain unprotected . 'The Final Inch ' focuses on the polio vaccine efforts in India and Pakistan . Comment: This year , there have been 26 recorded cases of polio around the world .
'The Final Inch ' focuses on the polio vaccine efforts in India and Pakistan . Comment: This year , there have been 26 recorded cases of polio around the world .