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Exactly two years ago Prof Sir Andrew Pollard was starting to panic. “We were just waking up to the reality of Covid-19 and that we would need vaccines for our very survival,” the director of the Oxford Vaccine Group told the Guardian last week

Clockwise from top left: Prof Dame Sarah Gilbert, Prof Sir Andrew Pollard, Dr Julian Tang and Prof Paul Hunter. Composite: Guardian Design/University of Leicester/Dave Benett/Getty Images for Veuve Clicquot/PA

He joined forces with a colleague, Prof Dame Sarah Gilbert, and together they launched one of the greatest medical missions in modern history. Their seemingly impossible task – to design, develop and deliver a vaccine from scratch to slow the advance of a lethal pandemic – was completed in less than 12 months, to the relief of millions.

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