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Open it Influenza is a viral infection of the lungs characterized by fever, cough, and severe muscle aches.
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Influenza - John Kimball The "Flu" Influenza is a viral infection of the lungs characterized by fever, cough, and severe muscle aches. In the elderly and infirm, it is a major cause of disability and death (often as a result of secondary infection of the lungs by bacteria). Even in the young and healthy, influenza prod
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