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Observed and expected bed occupancy for any admission, any infection and rotavirus gastroenteritis on general medical wards in Alder Hey NHS Foundation Trust, July 2007–June 2015. The coloured shading represents the 95% CI for the expected incidence. Grey shading represents the rotavirus season (January–May). The vertical hashed line represents the introduction of rotavirus vaccine in the UK in July 2013. NHS, National Health Service.
