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Last week, while schools and businesses across Europe closed in an attempt to halt the spread of Coronavirus the UK stood alone in a more relaxed approach to the pandemic; letting people choose whether they wanted to go to work, or socially distance themselves. This week, things have changed. Schools are closing for the foreseeable future and exams have been cancelled.

The British government says their change of heart was based on the work scientists like Christl Donnelly from Imperial College London and the University of Oxford. So what has Christl found that has caused such concern?

(Image: A lollipop lady helps children cross the road in Glasgow. Credit: EPA/Robert Perry)