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Kamimoto L, Euler GL, Lu PJ, Reingold A, Hadler J, Gershman K, Farley M, Terebuh P, Ryan P, Lynfield R, Albanese B, Thomas A, Craig AS, Schaffner W, Finelli L, Bresee J, Singleton JA. Seasonal influenza morbidity estimates obtained from telephone surveys, 2007. American journal of public health. 2013 Apr;103(103). 755-63.
Abstract
We assessed telephone surveys as a novel surveillance method, comparing data obtained by telephone with existing national influenza surveillance systems, and evaluated the utility of telephone surveys.