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Epidemiology of 2009 pandemic influenza A (H1N1) in the United States.

Abstract

In April 2009, the Centers for Disease Control and Prevention confirmed 2 cases of 2009 pandemic influenza A (H1N1) virus infection in children from southern California, marking the beginning of what would be the first influenza pandemic of the twenty-first century. This report describes the epidemiology of the 2009 H1N1 pandemic in the United States, including characterization of cases, fluctuations of disease burden over the course of a year, the age distribution of illness and severe outcomes, and estimation of the overall burden of disease.

MIDAS Network Members

Carrie Reed

Team Lead, Applied Research and Modeling
Centers for Disease Control and Prevention

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