The original content of Democracy Now! Headlines appears under the Creative Commons BY-NC-ND 3.0 License (United States). For more, including their other shows and media, visit www.democracynow.org. May 26, 2021 50% of U.S. Adults Fully Vaccinated; Moderna's Vaccine Is 100% Effective in 12- to 17-Year-Olds ----------------------------------------------------------------------------------------------- Moderna says its vaccine is 100% effective in children and teenagers aged 12 to 17, and will seek emergency use authorization from the Food and Drug Administration early next month. The Pfizer vaccine is already in use for those 12 and older. This comes as the White House announced another milestone in its vaccination drive Tuesday. This is senior COVID response adviser Andy Slavitt. Andy Slavitt: "Today the U.S. will hit 50% of adult Americans that are fully vaccinated. This is a major milestone in our country's vaccination efforts." Meanwhile, the Centers for Disease Control and Prevention warned unvaccinated Americans, heading into Memorial Day weekend, that they remain at risk and need to continue wearing a mask and following other public health guidelines. .