Seasonal influenza
European Commission: Seasonal influenza
WHO influenza updates
WHO Europe influenza surveillance
Centres for Disease Control and Prevention (CDC): Seasonal influenza (Flu)
Pandemic preparedness
European Commission | DG Health and Consumers: Influenza pandemic preparedness
Public Health Agency of Canada (PHAC): Pandemic Preparedness
The 2009 pandemic
European Commission | DG Health and Consumers: Pandemic 2009
European Medicines Agency (EMA): Pandemic influenza
World health organization (WHO) | Regional office for Europe: Pandemic (H1N1) 2009
World health organization (WHO): Pandemic (H1N1) 2009
Centers for Disease Control and Prevention (CDC): 2009 H1N1 Flu
Public Health Agency of Canada (PHAC): H1N1 Flu Virus
Google.org: Explore flu trends around the world