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  • Key Facts About Influenza (Flu) | Seasonal Influenza (Flu) | CDC

    http://www.cdc.gov/flu/keyfacts.htm

    Aug 25, 2016 ... The flu is a contagious respiratory illness caused by influenza viruses that infect
    the nose, throat, and lungs. It can cause mild to severe illness, ...

  • Influenza (Flu) | CDC - Centers for Disease Control and Prevention

    http://www.cdc.gov/flu/

    Note: For the 2016-2017 season, CDC recommends use of the flu shot (
    inactivated influenza vaccine or IIV) and the recombinant influenza vaccine (RIV).

  • Influenza - Wikipedia, the free encyclopedia

    https://en.wikipedia.org/wiki/Influenza

    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 ...

  • Overview - Influenza (flu) - Mayo Clinic

    http://www.mayoclinic.org/diseases-conditions/flu/basics/definition/co...

    Influenza is a viral infection that attacks your respiratory system — your nose,
    throat and lungs. Influenza, commonly called the flu, is not the same as stomach ...

  • WHO | Influenza

    http://www.who.int/topics/influenza/en/

    Influenza: WHO health topic page on influenza provides links to descriptions of
    activities, reports, publications, statistics, news, multimedia and events, as well as
     ...

  • The 1918 Influenza Pandemic - Human Virology at Stanford

    https://virus.stanford.edu/uda/

    The influenza pandemic of 1918-1919 killed more people than the Great War,
    known today as World War I (WWI), at somewhere between 20 and 40 million ...

  • Flu: Symptoms, Diagnosis, and Prevention - Medical News Today

    http://www.medicalnewstoday.com/articles/15107.php

    Jul 22, 2016 ... Influenza, or flu, is a respiratory illness caused by a virus. Flu is highly contagious
    and is usually spread by the coughs and sneezes of an ...

  • Flu: MedlinePlus

    https://medlineplus.gov/flu.html

    Do you know the difference between a cold and the flu (influenza)? Or looking for
    information on the "stomach flu?" Discover symptoms and treatment.

  • Influenza: Practice Essentials, Background, Pathophysiology

    http://emedicine.medscape.com/article/219557-overview

    Aug 22, 2016 ... Influenza, one of the most common infectious diseases, is a highly contagious
    airborne disease that occurs in seasonal epidemics and ...

  • Influenza (Flu) - National Foundation for Infectious Diseases

    http://www.nfid.org/influenza

    Influenza, more commonly referred to as "flu," impacts people of all ages.
    Influenza is a highly contagious viral infection of the nose, throat, and lungs that
    occurs ...