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Websites
- Flusurvey. www.flusurvey.org.uk (Accessed 30 July 2012)
- Influenzanet. www.influenzanet.eu (Accessed 30 July 2012)
- European Centre for Disease Prevention and Control. http://ecdc.europa.eu/en/healthtopics/seasonal_influenza/epidemiological_data (Accessed 30 July 2012)