Effect of school...Effect of school closures on mortality from coronavirus disease 2019: old and new predictions;, , , School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3FD, UKCorrespondence to: G J Ackland Objective To replicate and analyse the information available to UK policymakers when the lockdown decision was taken in March 2020 in the United Kingdom.Design Independent calculations using the CovidSim code, which implements Imperial College London’s individual based model, with data available in March 2020 applied to the coronavirus disease 2019 (covid-19)...…Effect of school...Effect of school closures on mortality from coronavirus disease 2019: old and new predictions;, , , School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3FD, UKCorrespondence to: G J Ackland Objective To replicate and analyse the information available to UK policymakers when the lockdown decision was taken in March 2020 in the United Kingdom.Design Independent calculations using the CovidSim code, which implements Imperial College London’s individual based model, with data available in March 2020 applied to the coronavirus disease 2019 (covid-19)...WW…