According to federal officials, an independent panel of medical experts said the encouraging results announced on Monday might have relied on outdated information.
Only hours after AstraZeneca announced encouraging news about the effectiveness of its Covid-19 vaccine on Monday, a group of medical experts charged with monitoring the company’s clinical trial made a highly unusual accusation: AstraZeneca had essentially cherry-picked data to make its vaccine look better.
The accusation, in a two-page letter sent Monday to the company and federal officials, was a fresh blow to the credibility of a vaccine whose low price and relatively easy storage have made it critical to the global fight against the coronavirus pandemic.
The private letter, which was described by people who have read it, castigated AstraZeneca for jeopardizing the integrity of a closely watched clinical trial.
“Decisions like this are what erode public trust in the scientific process,” the oversight board wrote. Read more