British pharmaceutical giant AstraZeneca on Monday said an interim analysis of clinical trials showed its coronavirus vaccine has an average efficacy of 70% in protecting against the virus. It comes after a string of encouraging vaccine results in recent weeks, following late-stage trial readouts from Pfizer-BioNTech and Moderna. The AstraZeneca vaccine, developed in collaboration with the University of Oxford, was assessed over two different dosing regimens.
One dosing regimen showed an effectiveness of 90% when trial participants received a half dose, followed by a full dose at least one month apart. The other showed 62% efficacy when given as two full doses at least one month apart. The combined analysis from both dosing regimens found average vaccine effectiveness of 70%. No hospitalizations or severe cases of the disease were reported in participants receiving the vaccine.
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