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Agencies

Oxford-AstraZeneca coronavirus vaccine shows 70% efficacy, can be 90% effective, result show
23-November-2020

AstraZeneca said today its vaccine for the novel coronavirus, developed along with the University of Oxford, showed an average efficiency of 70% in protecting against the virus in two study segments. A press note released by the Oxford University stated, "Phase 3 interim analysis including 131 Covid-19 cases indicates that the vaccine is 70.4% effective when combining data from two dosing regimens".

The company in a press release said, "Positive high-level results from an interim analysis of clinical trials of AZD1222 in the UK and Brazil showed the vaccine was highly effective in preventing COVID-19."

"One dosing regimen shows vaccine efficacy of 90% when AZD1222 was given as half dose, followed by full dose at least a month apart. Second dosing regimen shows 62% efficacy when given two full doses at least a month apart. Combined analysis has average efficacy of 70%," it added.

Two other drugmakers, Pfizer and Moderna, this week reported preliminary results from late-stage trials showing that their Covid-19 vaccines were almost 95% effective.

The coronavirus vaccine developed by Pfizer has shown 95 per cent efficacy in the late-stage trial, the company said last week.