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. March 22, 2021 AstraZeneca Vaccine Is 79% Effective in U.S. Trial, Shows No Risk of Blood Clotting ----------------------------------------------------------------------------------- Astra Zeneca says its COVID-19 vaccine showed 79% efficacy against symptomatic disease among participants in a large clinical trial in the United States. The vaccine was 100% effective in preventing serious illness and death. The findings pave the way for a fourth vaccine to request emergency use authorization in the U.S. The trial also showed no increased risk of serious blood clotting, after more than a dozen countries this month suspended or delayed its use over such concerns. The Centers for Disease Control and Prevention say one in six U.S. adults has now been fully vaccinated for COVID-19. Mississippi and Alaska have opened vaccine eligibility for anyone 16 or older. Floridians over 50 can get vaccinated starting today.