Estimating the incidence of novel influenza A (H1N1) by age group and region during September to December 2009 in Korea.
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Abstract
<p><b>NOTE</b>. Incidence = no. of each cases ÷ population of each age group.</p>†<p>All patients registered in the Antiviral Drug Surveillance System (ADSS) were confirmed or suspected to have the infection.</p