1. The annual impact of seasonal influenza in the us: Measuring disease burden and costs;NAM Molinari,2007
2. Influenza: lessons from past pandemics, warnings from current incidents;T Horimoto,2005
3. High costs of influenza: Direct medical costs of influenza disease in young children;G Fairbrother,2010
4. Economic burden and absenteeism from influenza-like illness in healthy households with children (5–17 years) in the us;S Li,2007
5. Establishing the health and economic impact of influenza vaccination within the european union 25 countries;J Ryan,2006