On October 25, 2011, the journal The Lancet Infectious Diseases published an article entitled "Efficacy and Effectiveness of Influenza Vaccines: A Systematic Review and Meta-Analysis." 

You can view the article by visiting the The Lancet Infectious Diseases website: www.thelancet.com/journals/laninf/issue/current. To view the CDC Key Points on the article, please click here.