1. Department of Health. Advice from the Joint Committee on Vaccination and Immunisation on swine flu vaccination. Friday 7 August 2009. Available at: http://www.dh.gov.uk/prod_consum_dh/groups/dh_digitalassets/@dh/@ab/documents/digitalasset/dh_104372.pdf. (Accessed 30-10-09).
2. Department of Health. More than 11 million people in England will be offered it first. Available from: http://nds.coi.gov.uk/content/detail.aspx?NewsAreaId=2&ReleaseID=407719&SubjectId=16&AdvancedSearch=true. (Accessed 30-10-09).
3. Health Protection Agency. HPA weekly national influenza report. www.hpa.org.uk.
4. Pandemic potential of a strain of Influenza A (H1N1): early findings;Fraser;Science,2009
5. Social contacts and mixing patterns relevant to the spread of infectious diseases;Mossong;PLoS Med,2008