Hayward, A. C., Fragaszy, E. B., Bermingham, A., Wang, L., Copas, A., Edmunds, W. J., …Zambon, M. (in press). Comparative community burden and severity of seasonal and pandemic influenza: results of the Flu Watch cohort study. Lancet Respiratory Medicine, 2(6), https://doi.org/10.1016/s2213-2600%2814%2970034-7