News AstraZeneca may have used outdated information in COVID-19 vaccine trial, US health officials say March 23, 2021Karen Weintraub, USA TODAYComments Off on AstraZeneca may have used outdated information in COVID-19 vaccine trial, US health officials say Results from a U.S. trial of AstraZeneca's COVID-19 vaccine may have used "outdated information," U.S. federal health officials said early Tuesday.