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

Examples of H1N1 in the following topics:

  • 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.