Influenza type A viruses undergo both kinds of changes; influenza type B viruses change only by the more gradual process of antigenic drift. ... Influenza Type A and Its Subtypes ... Influenza type A viruses can infect people, birds, pigs, horses, and other animals, but wild birds are the natural hosts for these viruses.
www.cdc.gov/flu/avian/gen-info/flu-viruses.htm
Influenza Website of the Centers for Disease Control and Prevention (CDC) ... Treatment & Prevention: Influenza Antiviral Drugs ... Note: On December 19, 2008, CDC issued Interim Recommendations for the Use of Influenza Antivirals for the 2008-09 Season.
www.cdc.gov/flu/protect/antiviral/
Learn about the different types of influenza – the virus that causes the flu. The influenza virus has been classified into three types: influenza type A, the most common; influenza type B, milder than type A; and influenza type C, which has never been connected with a large epidemic. ... Influenza Type C flu viruses,
www.flufacts.com/about/types.aspx www.flufacts.com/about/types.aspx
Below is a discussion of the science behind the influenza type A H1N1 virus (swine flu) as described by UTSA influenza researcher James Chambers, professor of biochemistry in the Department of Biology and a member of the South Texas Center for Emerging Infectious Diseases.
www.utsa.edu/today/2009/05/flufaq.cfm
Influenza Type A Symptoms. Most cases of the flu are Type C influenza, which is essentially a stronger version of the common cold. Type A influenza, on the other hand, can be much more dangerous and has been responsible for... ... Type A influenza is often marked by coughing, a sore throat and a runny or congested nose.
www.ehow.com/facts_4826515_influenza-type-symptoms.html www.ehow.com/facts_4826515_influenza-type-symptoms.html
Medical records of 99 hospitalized pediatric patients whose respiratory viral cultures yielded influenza type A or B during the winter of 1988/1989 were reviewed. ... Nosocomial influenza infections were identified in 14% of the high-risk and 4% of the low-risk patients. Four of the high-risk patients and only one of the...
www.medscape.com/medline/abstract/2035490
The Medscape Journal ... Allergy & Clinical Immunology ... Diabetes & Endocrinology...
www.medscape.com/medline/abstract/8438074
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 shots, how long it lasts and how it's spread. ... Influenza type A viruses undergo two kinds of changes. One is a series of mutations that occurs over time...
www.medicinenet.com/influenza/article.htm www.medicinenet.com/influenza/article.htm
People are seldom infected by the same type of influenza twice because resistance develops within two or four weeks. However, the influenza virus constantly mutates into slightly different versions of itself, which is one reason why vaccination is sometimes ineffective.
www.netdoctor.co.uk/diseases/facts/influenza.htm www.netdoctor.co.uk/diseases/facts/influenza.htm
Influenza - Wikipedia, the free encyclopedia
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 and mammals. The name influe...
en.wikipedia.org/wiki/Influenza