1. World Health Organisation. Prevention and Control of Influenza Pandemics and Annual Epidemics. Geneva, Switzerland: WHO, 2003. http://www.who.int/immunization/sage/1_WHA56_19_Prevention_and_control_of_influenza_pandemics.pdf (accessed on 29 February 2016).
2. Council of the European Union. Council recommendation of 22 December 2009 on seasonal influenza vaccination (2009/1019/EU). OJEC, 2009, pp. 348(71e2). http://www.epha.org/IMG/pdf/Council_Reccomendation_on_seasonal_flu_vaccine.pdf (accessed 29 February 2016).
3. Public Health England. Surveillance of Influenza and Other Respiratory Viruses in the United Kingdom: Winter 2014 to 2015. 2015. https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/429617/Annualreport_March2015_ver4.pdf (accessed 29 February 2016).
4. Strategies to increase influenza vaccination rates: outcomes of a nationwide cross-sectional survey of UK general practice
5. Vaccination coverage rates in eleven European countries during two consecutive influenza seasons