1. Estimates of deaths associated with seasonal influenza – United States, 1976–2007;Thompson;Morb. Mortal Wkly. Rep.,2010
2. Emergence of a novel swine-origin influenza a (H1N1) virus in humans;Novel swine-Origin influenza a (H1N1) virus investigation team;N. Engl. J. Med.,2009
3. Centers for Disease Control and Prevention People at high risk of developing flu-related complications. Available at: http://www.cdc.gov/flu/about/disease/high_risk.htm.
4. Estimated influenza illnesses and hospitalizations averted by influenza vaccination – United States, 2012–13 Influenza Season;Bresee;Morb. Mortal Wkly. Rep.,2013
5. Prevention and control of influenza with vaccines: recommendations of the Advisory Committee on Immunization Practices (ACIP);Fiore;Morb. Mortal Wkly. Rep.,2010