Influenza (flu)
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Influenza (flu) is a viral infection of the lungs and airways with one of the influenza viruses. It causes a fever, runny nose, sore throat, cough, headache, muscle aches (myalgias), and a general feeling of illness (malaise).
The virus is spread by inhaling droplets coughed or sneezed out by an infected person or by having direct contact with an infected person
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