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Professor Keith Shine, Regius Professor of Meteorology and Climate Science at the University of Reading, is an author of the new paper.

Bell's three-decade-long mission to build vaccines research capability at the University of Oxford, where he is Regius Professor of Medicine, was vital to the development of the Oxford/AstraZeneca COVID-19 vaccine, the government said.

Prof Sir John Bell, regius professor of medicine at Oxford University, told the Today programme the decision not to introduce new curbs before then was "probably fine", with data showing "very low" numbers of vaccinated people in intensive care.

Prof Sir John Bell, regius professor of medicine at Oxford University told the Today programme: "The horrific scenes that we saw a year ago - intensive care units being full, lots of people dying prematurely - that is now history in my view and I think we should reassured that that's likely to continue."

Professor Sir Simon Wessely, regius chair of psychiatry at King's College London, said the study was "very important", and would help patients make an informed choice.