Meet America's last iron lung users.
Once the most feared virus on the planet, polio has been wiped out in the states thanks to the success of the vaccine.
But while that's good news for the world, a few polio survivors who rely on iron lungs to help them breathe are struggling to cope with their decades-old machines which are no longer covered by their insurance or serviced by manufacturers who stopped production in the 1960s.
Paul Alexander, 70, of Dallas, is one of just a handful of people around the world who still relies on an iron lung to help him breathe.
Paul Alexander, 70, of Dallas, (pictured) is one of just a handful of people around the world who still relies on an iron lung to help him breathe.
Today, he spends almost every moment in the device after contracting polio as a five-year-old in 1952