Q&A on the 2009 pandemic
Frequently asked questions on pandemic (H1N1) 2009, updated 08 October 2009.
Information for travellers
The 2009 pandemic influenza is being reported from an increasing number of locations all over the world. Therefore, precautionary measures for travellers become increasingly important. Updated 18 May 2009.
Origin of the 2009 pandemic influenza A(H1N1) virus
Influenza A: Single stranded RNA virus with eight different genetic segments, when two viruses co-infect the same cell, new viruses can be produced that contain segments from both parental strains (a re-assortment)...
2009 pandemic timeline
This ECDC time-line of the 2009 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.
Seasonal influenza versus the 2009 pandemic
Table comparing seasonal influenza 2000/1 to 2008/9 and 2009 pandemic influenza, listing the ten characteristics whereby the new pandemic virus differs from the ‘old’ seasonal especially as it appeared in its later years.
Mortality from influenza
Comparing deaths from seasonal and pandemic influenza.
Animals and H1N1
First report of transmission of the pandemic A(H1N1) 2009 influenza virus from humans to birds.