|  |  | Background Reading - Henderson DA, Courtney B, Inglesby TV, Toner E, and Nuzzo JB. Public health and medical responses to the 1957-58 influenza pandemic. Biosecur Bioterror. 2009;7(3).
- Lipsitch M, Hayden FG, Cowling BJ, Leung GM. How to maintain surveillance for novel influenza A H1N1 when there are too many cases to count. The Lancet. 2009;374(9696).
- Smith LM, Gronvall GK. Influenza vaccine production for the U.S. market. Biosecur Bioterror. 2009;7(3).
- Sell TK, Nuzzo JB, Toner E. Where does H1N1 influenza information come from? An overview of influenza surveillance in the United States. Center for Biosecurity of UPMC website. November 2, 2009.
- Nuzzo JB. Border restrictions: Not an effective means of preventing the spread of swine flu. Center for Biosecurity of UPMC website. April 28, 2009.
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