H1N1

(noun)

H1N1 virus is a subtype of Influenza A virus. Some strains of H1N1 are endemic in humans and cause a small fraction of all influenza-like illness and a small fraction of all seasonal influenza. Other strains of H1N1 are endemic in pigs (swine influenza) and in birds (avian influenza).

Related Terms

  • pandemic
  • Spanish influenza

Examples of H1N1 in the following topics:

  • Disease Reservoirs and Epidemics

    • The World Health Organization declared the new flu strain H1N1 as a pandemic in June 2009.
  • Emergence of Viral Pathogens

    • The most recent 2009 H1N1 outbreak was a result of an antigenic shift and reassortment between human, avian, and swine viruses.
  • Current Epidemics

    • Initially dubbed "swine flu" and also known as influenza A/H1N1, it emerged in Mexico, the United States, and several other nations.
  • Penetrating Host Defenses

    • Recombination between human and pig influenza viruses led to the 2010 H1N1 swine flu outbreak.
  • The Spanish Flu

    • The Spanish Flu was a H1N1 influenza virus, which is a subtype of Influenza A with strains that can appear in humans and animals.
  • Mixing Academic and Colloquial Styles

    • Bad Academic Style: "When the European Union recommended against nonessential travel to the United States and Mexico during the H1N1 flu pandemic, airlines reported a sharp decrease in ticket sales to all regions."
    • This phenomenon affected businesses, negatively in some cases, positively in others, during the H1N1 flu pandemic.
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