%0 Journal Article %A Health Protection Agency, Health Protection Scotland, National Public Health Service for Wales, HPA Northern Ireland Swine influenza investigation teams, Collective %T Epidemiology of new influenza A (H1N1) virus infection, United Kingdom, April – June 2009 %D 2009 %J Eurosurveillance %V 14 %N 22 %P 19232 %R doi:https://doi.org/10.2807/ese.14.22.19232-en %K A(H1N1)v %K swine flu %K H1N1 %K pandemic %K novel influenza A(H1N1) %K influenza %K swine influenza %U https://www.eurosurveillance.org/content/10.2807/ese.14.22.19232-en