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Delay-corrected observed and predicted number of all-cause deaths in <65-yr-olds and ≥65-yr-olds in England and Wales, and mean Central England Temperature from 24 May to 5 July 2011. The yellow arrow indicates when the heatwave alert was issued by the Met Office. Excess mortality (number of deaths greater than the prediction) is deemed significant if greater than the upper 3SD limit.
