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Hace 2 días · The 1918–1920 flu pandemic, also known as the Great Influenza epidemic or by the common misnomer Spanish flu, was an exceptionally deadly global influenza pandemic caused by the H1N1 influenza A virus.
- February 1918 – April 1920
- Worldwide
- 25–50 million (generally accepted), other estimates range from 17 to 100 million
- Influenza
3 de may. de 2024 · Influenza A H1N1, virus that is best known for causing widespread outbreaks, including epidemics and pandemics, of acute upper or lower respiratory tract infection. The influenza A H1N1 virus is a member of the family Orthomyxoviridae (a group of RNA viruses). Type A is one of the three major types.
- The Editors of Encyclopaedia Britannica
3 de may. de 2024 · This H1N1 strain was antigenically similar to the H1N1 strains that circulated prior to 1957. Since 1977, both H1N1 and H3N2 have circulated in humans as part of seasonal influenza. [1] In 1980, the classification system used to subtype influenza viruses was introduced.
- Influenza viruses
- >290,000–650,000 deaths per year
Hace 2 días · e. Influenza A virus subtype H5N1 (A/H5N1) is a subtype of the influenza A virus, which causes influenza (flu), predominantly in birds. It is enzootic (maintained in the population) in many bird populations, and also panzootic (affecting animals of many species over a wide area). [1] A/H5N1 virus can also infect mammals (including humans) which ...
27 de abr. de 2024 · El virus de la gripe o influenza pertenece a la familia de los Orthomyxovirus. En realidad, existen cuatro tipos (A, B, C y D), genéticamente distintos. En humanos, la gripe A es la más frecuente; la B aparece cada 2-4 años y suele ser menos problemática; la C es más rara y suele causar infecciones leves, y los virus de tipo D afectan al ganado.
Hace 5 días · The H1N1 virus that caused the outbreak was discovered to possess genetic material from human, avian, and two different swine influenza viruses. The 2009 H1N1 outbreak was not nearly as deadly as the pandemic of 1918–19. However, the virus was highly contagious and spread rapidly.
19 de abr. de 2024 · Seasonal influenza activity continues to decline in most areas of the country. CDC continues to recommend vaccination as long as flu viruses are spreading. There are antiviral drugs to treat flu illness. Flu Report.
