FLU has various meanings in the Governmental & Military category. Discover the full forms, definitions, and usage contexts of FLU in Governmental & Military.
Influenza, commonly known as the flu, is an infectious disease caused by an influenza virus. Symptoms can be mild to severe. The most common symptoms include: a high fever, runny nose, sore throat, muscle pains, headache, coughing, and feeling tired. These symptoms typically begin two days after exposure to the virus and most last less than a week.
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