Comprehensive information on influenza provided by the Center for Disease Control:
http://www.cdc.gov/flu/
Information from the Oklahoma State Department of Health:
http://www.ok.gov/health/Disease,_Prevention,_Preparedness/H1N1_Flu_Updates_and_Alerts/index.html
Information provided by the World Health Organization:
http://www.who.int/csr/disease/swineflu/en/index.html