What is influenza a

The word Influenza comes from the Italian language meaning “influence” and refers to the cause of the disease; initially, this ascribed illness to unfavorable astrological influences.It is a highly contagious acute respiratory infection caused by a new influenza virus or the flu.Clinical symptoms are generally similar to those of seasonal influenza, ranging from asymptomatic infection to severe pneumonia.

TAGS: virus, symptoms, flu, influenza viruses, illness, infected, influenza virus, infection, influenza, vaccine, cough, fever, H1N1, influenza vaccine, humans, treatment, seasonal flu, Influenza, flu vaccine, flu virus

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