The flu Health Article

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Illustrations
Influenza
Influenza is a viral infection of the respiratory tract that causes coughing, breathing difficulty, fever, headache, muscle aches and weakness. The virus is spread from person to person by inhaling infected droplets from the air. Update Date:
12/04/2007 Arnold L. Lentnek, M.D., Division of Infectious Disease, Kennestone Hospital, Marietta, GA. Review provided by VeriMed Healthcare Network.

Normal lung anatomy
Influenza
Nasal spray flu vaccine

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