Persons over the age of 65 have a higher risk for severe influenza-related complications and have the highest risk of mortality from influenza. Vaccination of older persons have traditionally been the main focus of influenza vaccine policy, and while vaccines are not as efficient in this population as in younger adults, it still remains the most effective public health tool to protect against influenza (WHO 2012). Vaccination recommendations vary slightly between countries in Europe, however almost all cover older people as a specific target group (Endrich et al 2009).