@BillGates: During the height of the U.S. polio epidemic, the iron lung was one of the greatest tools used to fight polio. Today, it’s the iron will of the thousands of workers and their supporters who are committed to finishing the job. https://t.co/oAzGsIGSUN #endpolio

http://twitter.com/BillGates

During the height of the U.S. polio epidemic, the iron lung was one of the greatest tools used to fight polio. Today, it’s the iron will of the thousands of workers and their supporters who are committed to finishing the job. https://t.co/oAzGsIGSUN #endpolio

— Bill Gates (@BillGates) Jul 22, 2021