RT Journal Article SR Electronic(1) A1 Mytton, O T A1 Rutter, P D A1 Donaldson, L J YR 2012 T1 Influenza A(H1N1)pdm09 in England, 2009 to 2011: a greater burden of severe illness in the year after the pandemic than in the pandemic year JF Eurosurveillance VO 17 IS 14 SP 20139 OP DO https://doi.org/10.2807/ese.17.14.20139-en UL https://www.eurosurveillance.org/content/10.2807/ese.17.14.20139-en