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AstraZeneca doubles down on COVID-19 vaccine performance

By Brian Buntz | March 25, 2021

AstraZenecaAfter a quarrel with its independent data safety monitoring board, AstraZeneca confirmed that its COVID-19 vaccine offers strong performance in protecting against COVID-19 in a U.S. study.

The company announced that the vaccine was 76% effective against symptomatic COVID-19. That figure was three points lower than the percentage it released on Monday. The data safety monitoring board had accused the company of cherry-picking data to inflate its efficacy rating. The 76% efficacy figure of the two-shot vaccine is marginally higher than that of the one-dose Johnson & Johnson vaccine. The J&J vaccine was 72% effective in the U.S. and 66% globally.

The 76% efficacy rate for AstraZeneca’s vaccine reflects a more recent validation of the study’s statistical analysis, including COVID-19 cases reported later in the trial.

The data is 100% effective at protecting against severe disease and death, according to AstraZeneca.

The company could release complete data from its U.S study in April.

 

 

About The Author

Brian Buntz

The pharma and biotech editor of WTWH Media, Brian is a veteran journalist with more than 15 years of experience covering an array of life science topics, including clinical trials, drug discovery and development and medical devices. Before coming to WTWH, he served as content director focused on connected devices at Informa. In addition, Brian covered the medical device sector for 10 years at UBM. At Qmed, he overhauled the brand’s news coverage and helped to grow the site’s traffic volume dramatically. He had previously held managing editor roles on two of the company’s medical device technology publications. Connect with him on LinkedIn or email at bbuntz@wtwhmedia.com.

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