Influenza, commonly referred to as the flu, is an infectious disease caused by RNA viruses of the family Orthomyxoviridae (the influenza viruses), that affects birds ... en.wikipedia.org
CDC Centers for Disease Control and Prevention Influenza Flu Homepage - Everything you need to know about the flu illness, including symptoms, treatment ... www.cdc.gov
Learn influenza symptoms, causes, home remedies, treatment with antiviral drugs and prevention. Read about flu types (swine or H1N1, bird, stomach), when to get flu ... www.medicinenet.com