Our Flu (Influenza) Main Article provides a comprehensive look at the who, what, when and how of Flu (Influenza)
Medical Definition of Influenza
Influenza: Influenza is an acute respiratory illness caused by influenza A or B viruses Most people who get the influenza recover completely in 1 to 2 weeks, but some people develop serious and potentially life-threatening medical complications, such as pneumonia. Much of the illness and death caused by influenza can be prevented by annual influenza vaccination.
Last Editorial Review: 5/13/2016
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