The world is at the brink of a historic moment: eradication of polio, one of the most feared scourges of humanity; yet, recent setbacks threaten this long-awaited achievement. On World Polio Day, CDC and Rotary will co-host a live media briefing at CDC to highlight historic progress-the fewest polio cases in the fewest places in history-and outline what is needed to achieve a polio-free world.