CDC H1N1 Flu | Questions and Answers: EID article Estimates of the Prevalence of Pandemic (H1N1) 2009, United States, April-July 2009

Questions and Answers: EID article "Estimates of the Prevalence of Pandemic (H1N1) 2009, United States, April-July 2009"
October 28, 2009, 4:30 PM ET

Summary
Through July 2009, a total of 43,677 laboratory-confirmed cases of 2009 H1N1 were reported in the United States, which is likely a substantial underestimate of the true number. Correcting for under-ascertainment using a multiplier model, researchers in this study estimate there may have been between 1.8 million and 5.7 million cases during this time period, including 9,000-21,000 hospitalizations. This article is available online at Emerging Infectious Diseases online (http://www.cdc.gov/eid/content/15/12/pdfs/09-1413.pdf).

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CDC H1N1 Flu | Questions and Answers: EID article Estimates of the Prevalence of Pandemic (H1N1) 2009, United States, April-July 2009