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1. en.wikipedia.org › wiki › InfluenzaInfluenza - Wikipedia

   en.wikipedia.org › wiki › Influenza

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   Vor 11 Stunden · Influenza, commonly known as " the flu " or just " flu ", is an infectious disease caused by influenza viruses. Symptoms range from mild to severe and often include fever, runny nose, sore throat, muscle pain, headache, coughing, and fatigue. These symptoms begin one to four (typically two) days after exposure to the virus and last for about ...

   • Causes: Influenza viruses

   • Deaths: >290,000–650,000 deaths per year

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