The Coronavirus Files: After Sars swept across the globe, the UK drew up a plan for fighting an airborne virus arriving in Britain from China. The 2005 document was filed away in Whitehall, and apparently never used. Now uncovered, its recommendations – from limiting travel to stopping ‘super-spreader’ events – are strikingly similar to the measures belatedly brought in to fight Covid-19. Former government advisers tell Samuel Lovett that this guide to fighting an epidemic could have saved tens...