Figure 1.

Estimates of influenza and pneumococcal disease burden in adults, United States, 2005–2008

^aMolinari NA, Ortega-Sanchez IR, Messonnier ML, Thompson WW, Wortley PM, Weintrub E, et al. The annual impact of seasonal influenza in the U.S.: measuring disease burden and costs. Vaccine 2007;25:5086-96.

^bEstimates of deaths associated with seasonal influenza—United States, 1976–2007. MMWR Morb Mortal Wkly Rep 2010;59(33):1057-62.

^cCenters for Disease Control and Prevention (US). Active Bacterial Core Surveillance report, Emerging Infections Program Network, Streptococcus pneumonia, 2009 [cited 2010 Aug 25]. Available from: URL: http://www.cdc.gov/abcs/reports-findings/survreports/spneu09.pdf