News & Perspective

Jan 24, 2013

Jan 24, 2013

Study puts global 2009 pandemic H1N1 infection rate at 24%

(CIDRAP News) – In a new analysis of serologic studies from 19 countries, researchers estimate that about 24% of the population were infected with the 2009 H1N1 influenza (pH1N1) virus during the first year of the pandemic, a finding modestly higher than what US health officials estimated in the immediate aftermath of the pandemic.