AstraZeneca to publish full US trial results after rare rebuke over 'outdated' data

LONDON/CHICAGO - AstraZeneca will publish up-to-date results from its major U.S. COVID-19 vaccine trial within 48 hours after health officials publicly criticized the drugmaker for using "outdated information" to show how well the immunization worked.

The rare public rebuke marks the latest setback for the vaccine once hailed as a milestone in the fight against the COVID-19 pandemic that has since been dogged by questions over its effectiveness and possible side effects. AstraZeneca said results it published on Monday in which the vaccine had demonstrated 79% efficacy were based on an interim analysis of data through Feb. 17, and it would now "immediately engage" with the independent panel monitoring the trial to share its full analysis.