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Oxford University Covid-19 vaccine provides 70% protection but can be 90% by tweaking dose

The coronavirus vaccine developed by the University of Oxford provides 70% protection at stopping Covid-19 symptoms on people, trial data shows.

In a glimmer of hope the researchers say the figure may be as high as 90% by tweaking the dose.

The results will be seen as a triumph, but its competitor Pfizer and Moderna vaccines showed 95% protection.




However on the brighter side the Oxford vaccine is easier to store and get to every corner of the world than the other two.

So the vaccine will play a significant role in tackling the pandemic, if it is approved for use by regulators.

There are two results from the trial of more than 20,000 volunteers in the UK and Brazil.



Overall, there were 30 cases of Covid in people who had two doses of the vaccine and 101 cases in people who received a dummy injection. The researchers said it worked out at 70% protection, which is better than the seasonal flu jab.

Nobody getting the actual vaccine developed severe-Covid or needed hospital treatment.

However, protection was 90% in an analysis of around 3,000 people on the trial who were given a half-sized first dose and a full-sized second dose.

“The announcement today takes us another step closer to the time when we can use vaccines to bring an end to the devastation caused by [the virus],” said the vaccine’s architect, Prof Sarah Gilbert.

The UK government has pre-ordered 100 million doses of the Oxford vaccine, and AstraZeneca says it will make three billion doses for the world next year.

Prime Minister Boris Johnson said it was “incredibly exciting news” and that while there were still safety checks to come, “these are fantastic results”.