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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 subtype of the influenza A virus.
Five flu pandemics have occurred since 1900: the Spanish flu from 1918 to 1920, which was the most severe; ... (the incubation period) is one to four days, ...
This is a timeline of influenza, briefly describing major events such as outbreaks, epidemics, pandemics, discoveries and developments of vaccines.In addition to specific year/period-related events, there is the seasonal flu that kills between 250,000 and 500,000 people every year and has claimed between 340 million and 1 billion human lives throughout history.
The incubation period for AIDS is around 10 years, ... and the subsequent pandemic of Spanish flu was one of the worst natural disasters in history. [192]
That is exactly what happened with the 2009 H1N1 swine flu and the Spanish flu of 1918 pandemics. Influenza A subtypes. Influenza A (but not B) also has subtypes labeled H and N. These refer to ...
Swine influenza (also known as swine flu or pig flu) is a respiratory disease that occurs in pigs that is caused by the Influenza A virus. Influenza viruses that are normally found in swine are known as swine influenza viruses (SIVs). The three main subtypes of SIV that circulate globally are A(H1N1), A(H1N2), and A(H3N2).
All influenza A virus pandemics since the 1900s were caused by Avian influenza, through Reassortment with other influenza strains, either those that affect humans (seasonal flu) or those affecting other animals (see 2009 swine flu pandemic). [35] The serotypes that have been confirmed in humans, ordered by the number of confirmed human deaths, are:
An upper respiratory infection like the common cold, the flu, or COVID-19. Environmental irritants like smoke or dust. A lower respiratory tract infections like bronchitis or pneumonia.