Affiliation: | 1.Centre for Infectious Diseases,University of Edinburgh, Ashworth Laboratories, King's Buildings,Edinburgh,UK;2.MRC Centre for Outbreak Analysis and Modelling,Department of Infectious Disease Epidemiology, Imperial College London,London,UK;3.Department of Mathematics and Statistics,Strathclyde University,Glasgow,UK;4.Health Protection Scotland, Clifton House,Glasgow,UK |