Through July 2009, a total of 43,677 laboratory-confirmed cases of influenza A pandemic (H1N1) 2009 were reported in the United States, which is likely a substantial underestimate of the true number. Correcting for under-ascertainment using a multiplier model, we estimate that 1.8 million–5.7 million cases occurred, including 9,000–21,000 hospitalizations.
All Keywords
【저자키워드】 viruses, pandemic, Influenza, dispatch, Pandemic (H1N1) 2009, expedited,
【저자키워드】 viruses, pandemic, Influenza, dispatch, Pandemic (H1N1) 2009, expedited,