Oxford Astra Zeneca's vaccine error | What happens to India trials? | Oneindia News

Even as Oxford and Astra Zeneca said that their Covid-19 vaccine had a 90% efficacy, their claims it turned out were based on an accident.

Oxford Astrazeneca said that when volunteers were administered a half dose of the vaccine followed by a full dose a month later the vaccine demonstrated 90% efficiency.

Here is what happened.

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