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2009 influenza A (H1N1) pandemic

Disease page

The 2009 influenza A(H1N1) pandemic was declared over in August 2010 by the World Health Organization. Europe has now entered a new inter-pandemic phase of seasonal influenza.

19 February 2015 - Assessment of human influenza pandemic scenarios in Europe
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06 June 2013 - Critical care surveillance: insights into the impact of the 2010/11 influenza season relative to the 2009/10 pandemic season in England
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11 April 2013 - Prevailing effectiveness of the 2009 influenza A(H1N1)pdm09 vaccine during the 2010/11 season in Sweden
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17 January 2013 - Within-patient emergence of the influenza A(H1N1)pdm09 HA1 222G variant and clear association with severe disease, Norway
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08 November 2012 - Hospitalisation associated with the 2009 H1N1 pandemic and seasonal influenza in Hong Kong, 2005 to 2010
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Questions and answers

What is the influenza A(H1N1)v virus? What is the origin of the 2009 pandemic influenza A(H1N1) virus? What is the difference between the pandemic (H1N1) 2009 and swine influenza?

Timeline on the pandemic (H1N1) 2009

This timeline of the 2009 Influenza Pandemic runs from the first described cases in California in April 2009 to July 10th 2010 when the WHO Director General declared that the pandemic was over.

Threats and outbreaks reports

Page listing outbreak reports for the 2009 influenza A (H1N1) pandemic.

Surveillance reports

Page listing surveillance reports for the 2009 influenza A (H1N1) pandemic.

Prevention and control

Page listing preventive and control measures for the 2009 influenza A (H1N1) pandemic.

Pandemic preparedness

External links to partners with information about the 2009 influenza A (H1N1) pandemic

European Medicines Agency (EMA): Pandemic influenza

Centers for Disease Control and Prevention (CDC): 2009 H1N1 Flu

Public Health Agency of Canada (PHAC): H1N1 Flu Virus