European Commission | DG Health and Consumers: Pandemic 2009
European Medicines Agency (EMA): Pandemic influenza
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
