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what-is-flu-its-symptoms-and-treatment

Flu or influenza • Influenza is a viral infection of human being. • It is also commonly known as "the ”. • It is caused by a virus. It infects the upper respiratory tract of humans. • This virus is present all over in the environment. • Symptoms of flu:-  Fever  Cough  Headache  Malaise ( tired feeling )  Bodyache  Occasional...

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