Volume 15, Number 12—December 2009
Estimates of the Prevalence of Pandemic (H1N1) 2009, United States, April–July 2009
|Parameter||Estimated no. case-patients
|Median||90% range||Median||90% range|
|Total no. case-patients by age group, y†||3,052,768||1,831,115–5,720,928||997||598–1,868|
|No. hospitalized case-patients by age group, y||13,764||9,278–21,305||4.5||3.0–7.0|
|Through May 12||33||23–49||–||–|
|After May 12||84||50–163||–||–|
*United States Population Estimates, 2009.
†Age distributions from line list and aggregate reports of laboratory-confirmed cases and hospitalizations to the Centers for Disease Control and Prevention through July 23, 2009.
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