%0 Journal Article %A Dabrera, G %A Said, B %A Kirkbride, H %A On behalf of the USII Collaborating Group, Collective %T Evaluation of the surveillance system for undiagnosed serious infectious illness (USII) in intensive care units, England, 2011 to 2013 %D 2014 %J Eurosurveillance %V 19 %N 46 %P 20961 %R doi:https://doi.org/10.2807/1560-7917.ES2014.19.46.20961 %K mass gathering %K emerging or re-emerging diseases %K epidemiology %U https://www.eurosurveillance.org/content/10.2807/1560-7917.ES2014.19.46.20961