Search the entire Understanding Patient Data site Search Extending the UK flu vaccination programme to children Using surveillance data to demonstrate the benefits of vaccinating children against flu Improving management of chronic kidney disease Monitoring blood test results alerts GPs if a person’s health is deteriorating Monitoring joint replacement surgery Analysing registry data to improve performance and safety Supporting research into rare diseases Using registry data to search for treatments for rare diseases Assessing a new treatment for severe asthma Evaluating the safety of a new treatment through real world clinical data The impact of air pollution on health Using pan-European data to understand how air pollution affects health Disproving the link between the MMR vaccine and autism Using data to conclusively disprove ideas that pose risks to public health