Results from a U.S. trial of AstraZeneca’s COVID-19 vaccine may have included “outdated information” and that could mean the company provided an incomplete view of efficacy data, American federal health officials said early Tuesday.
AstraZeneca said in a statement that the data it released Monday included cases up to Feb. 17, as the study rules specified, and that it was continuing to analyze cases that have occurred since then. The company said that a preliminary analysis of data that has continued to roll in was consistent with what it had already reported. It promised an update within 48 hours.
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