Douglas B. White, MD, MAS; Derek C. Angus, MD, MPH. JAMA. 2009;302(17):1905-1906. Published online October 12, 2009
Despite an enormous global investment in preparing for the reemergence of 2009 influenza A(H1N1), preparations proceeded largely without empirical data about the nature and severity of disease. This paucity of data is particularly problematic for clinicians in intensive care units (ICUs), who will shoulder a heavy burden for the clinical response to H1N1. In this issue of JAMA, 3 reports provide data that begin to fill this empirical void.

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