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   What is swine flu?

   • swine flu, a respiratory disease of pigs that is caused by an influenza virus. The first flu virus isolated from pigs was influenza A H1N1 in 1930. This virus is a subtype of influenza that is named for the composition of the proteins hemagglutinin (H) and neuraminidase (N) that form its viral coat.

   Swine flu | Causes, Symptoms & Treatment | Britannica

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   Where did swine flu come from?

   • A well-documented outbreak of swine flu in humans occurred in 1976 in New Jersey, U.S., at Fort Dix army base, where severe respiratory illness was observed in a small group of recruits and caused one death. Although the virus isolated from the recruits was identified as swine influenza, the origin of the virus was unknown.

   Swine flu | Causes, Symptoms & Treatment | Britannica

   www.britannica.com/science/swine-flu

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   How to prevent swine flu in pigs?

   • Outbreaks of swine flu in pigs can be prevented through vaccination against the viruses. The spread of the virus among pigs also can be controlled through sanitary practices, such as disinfecting areas that were occupied by infected pigs, disposing of contaminated bedding, and washing hands after handling infected animals.

   Swine flu | Causes, Symptoms & Treatment | Britannica

   www.britannica.com/science/swine-flu

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2. www.britannica.com › science › swine-fluSwine flu | Causes, Symptoms & Treatment | Britannica

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   Jul 2, 2024 · Swine flu is a respiratory disease of pigs caused by influenza viruses that can also infect humans and birds. Learn about the types, transmission, and prevention of swine flu, and the 1976 outbreak in Fort Dix army base.

   • Author: Kara Rogers

3. www.mayoclinic.org › diseases-conditions › swine-fluWhat's the difference between H1N1 flu and influenza A?

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   Jul 4, 2024 · Flu, also called influenza, is a viral infection of the nose, throat and lungs, which are part of the respiratory system. The viruses that cause influenza are divided into four categories named with letters. Influenza A is the most common type. The others are influenza B, C and D.

4. www.hindustantimes.com › lifestyle › healthBird flu? Swine flu? A guide to H5N1 viruses and beyond

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   Ever been confused by the names for bird flu, swine flu, Spanish flu H1N1 and the rest? Here’s what the numbers mean.

5. www.britannica.com › science › influenza-A-H1N1Influenza A H1N1 | Symptoms, Treatment & Prevention

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   Jun 27, 2024 · The 2009 H1N1 virus, called swine flu because the virus likely originated in pigs and contained genes from multiple strains of swine influenza viruses, first broke out in Mexico and subsequently spread to the United States and other countries around the world.

   • Author: The Editors of Encyclopaedia Britannica

6. www.cdc.gov › swine-flu › variant-flu-in-humansAbout Human Infections with Variant Influenza Viruses | Swine ...

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   Jun 27, 2024 · About variant flu in people Swine flu is a respiratory disease of pigs caused by type A influenza viruses that regularly cause outbreaks of flu in pigs (not people). When an influenza virus that normally spreads in pigs but not people is found in a person, it is called a "variant influenza virus." For example, if a swine influenza A (H3N2) virus is found in a person, that virus will be called an "H3N2 variant" virus (abbreviated as "H3N2v" virus).

7. www.britannica.com › event › influenza-pandemic-ofinfluenza pandemic of 1918–19 - Encyclopedia Britannica

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   Jun 18, 2024 · Influenza pandemic of 1918–19, the most severe influenza outbreak of the 20th century and among the most devastating pandemics in human history. The outbreak was caused by influenza type A subtype H1N1 virus. Learn about the origins, spread, and impact of the influenza pandemic of 1918–19.

8. www.who.int › health-topics › influenza-seasonalInfluenza seasonal - World Health Organization (WHO)

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   1 day ago · Seasonal influenza is an acute respiratory infection caused by influenza viruses which circulate in all parts of the world. It represents a year-round disease burden. It causes illnesses that range in severity and sometimes lead to hospitalization and death.