1. Regional Office for Europe Guidance for Influenza Surveillance in Humans.,2009
2. Overview of surveillance of influenza 2009/2010 in the EU/EEA.,2009
3. Communicable and Respiratory Disease Report for England and Wales, week 49 2010.,2010
4. Hospitalization in two waves of pandemic influenza A(H1N1) in England.;CN Campbell;Epidemiol Infect Nov,2010
5. Office for National Statistics website,, Population Estimates for UK, England and Wales, Scotland and Northern Ireland, mid 2009.