How close are we to a Covid-19 vaccine?

"Half of Britons could get jab in months" reads the front page of the Daily Mail. It, like many papers reports the announcement at yesterday's Downing Street news conference that ministers had helped to broker a deal for Astra Zeneca to produce up to 30 million doses of a vaccine by the Autumn. We also hear the story of the 35 year old woman who has spent a staggering 58 days on a ventilator who's now speaking for the first time. (Image:Vial with a potential vaccine. Credit: AFP)