Flu is caused by the influenza virus. There are mainly three types of influenza virus - A, B and C. symptoms for this viral infection are Fever, Cough,Headache, Body Aches, Fatigu, loss of appetite, Congestion etc. Swine flu is caused by a particular strain of influenza A virus which is called H1N1v. Flu (influenza) is transfered from one person to another by droplets created when someone with the infection sneezes or coughs.
Clinical Infectious Diseases: Open Access received 49 citations as per Google Scholar report
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