U.S. finds AstraZeneca coronavirus vaccine 79% effective Posted on March 22, 2021March 22, 2021 by Meme News U.S. finds AstraZeneca coronavirus vaccine 79% effective. GET THE FULL STORY Photo credit: Prefeitura de Pelotas – link, PDM-owner, link. Share this:Click to share on Facebook (Opens in new window)Like this:Like Loading...