October 24th was World Polio Day. This year’s celebration was special since it was officially announced that the wild poliovirus type-3 has been globally eradicated. It’s the second of the three types of wild polio viruses to be eliminated. Coming up, on the Science Edition of Press Conference USA, Rick Pantaleo and VOA Health Reporter, Carol Pearson, talk with Ellyn Ogden of USAID and Dr. Jay Wenger of the Bill and Melinda Gates Foundation, about the progress made and challenges that remain in ridding the world of this scourge.