How do the results compare with the Pfizer and Moderna data?The Astra-Oxford vaccine on average prevented 70% of cases in large trials in the UK and Brazil.
The results combined data from two different dosing regimens, which may leave questions open about the best way to give the shot.
One regimen showed efficacy of 90%, while another yielded 62% efficacy. The numbers together couldn’t meet the high bar set by Pfizer and partner BioNTech SE, which unveiled findings showing their shot was 95% effective.