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CDC estimates of 2009 H1N1 influenza cases, hospitalizations and deaths in the United States, April – October 17, 2009
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November 12, 2009
[PDF-105.60 KB]
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Description:Estimating the number of individual flu cases in the United States is very challenging because many people with flu don’t seek medical care and only a small number of those that do seek care are tested. More people who are hospitalized or die of flu-related causes are tested and reported, but under-reporting of hospitalizations and deaths occurs as well. For this reason CDC monitors influenza activity levels and trends and virus characteristics through a nationwide surveillance system and uses statistical modeling to estimate the burden of flu illness (including hospitalizations and deaths) in the United States.
Estimating_2009_H1N1_Cases_Hosps_and_Deaths_Full%20Document_PDF.pdf
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Pages in Document:6 unnumbered pages
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