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Hace 1 día · The 1918 Spanish flu was the first of three flu pandemics caused by H1N1 influenza A virus; the most recent one was the 2009 swine flu pandemic. The 1977 Russian flu was also caused by H1N1 virus.
- February 1918 – April 1920
- Worldwide
- 25–50 million (generally accepted), other estimates range from 17 to 100 million
- Influenza
Hace 4 días · Among IAV subtypes, H1N1 and H3N2 circulate in humans and are responsible for seasonal influenza. Cases disproportionately occur in children, but most severe causes are among the elderly, the very young, [1] and the immunocompromised. [4]
- Influenza viruses
- >290,000–650,000 deaths per year
16 de mar. de 2024 · La gripe H1N1 es un subtipo de la influenza A. La gripe, también conocida como influenza, es una infección viral de la nariz, la garganta y los pulmones, que son parte del sistema respiratorio. Los virus que causan la influenza se dividen en cuatro categorías denominadas con letras.
8 de mar. 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).
- The Editors of Encyclopaedia Britannica
Hace 4 días · The chosen strains are the H1N1, H3N2, and Type-B strains thought most likely to cause significant human suffering in the coming season. Starting with the 2012–2013 Northern Hemisphere influenza season (coincident with the approval of quadrivalent influenza vaccines), the WHO has also recommended a 2nd B-strain for use in ...
- Afluria, Fluarix, Fluzone, others
- Influenza virus
- inactivated, attenuated, recombinant
Hace 4 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.
16 de mar. de 2024 · A menudo los síntomas comunes de la gripe incluyen fiebre pero no siempre, así como también dolor de cabeza, dolor en los músculos, y escalofríos y sudoración. Otros síntomas incluyen: Tos persistente y seca.