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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.
The sequences of the polymerase proteins (PA, PB1, and PB2) of the 1918 virus and subsequent human viruses differ by only 10 amino acids from the avian influenza viruses. Viruses with 7 of the 10 amino acids in the human influenza locations have already been identified in currently circulating H5N1 .
The 1918 flu pandemic, commonly referred to as the Spanish flu, was a category 5 influenza pandemic caused by an unusually severe and deadly Influenza A virus strain of subtype H1N1. The difference between the influenza mortality age-distributions of the 1918 epidemic and normal epidemics.
London flu: 1972–1973 United States Influenza A virus subtype H3N2: 1,027 [209] 1973 Italy cholera epidemic 1973 Italy Cholera (El Tor strain) 24 [210] 1974 smallpox epidemic in India: 1974 India Smallpox: 15,000 [211] 1977 Russian flu: 1977–1979 Worldwide Influenza A virus subtype H1N1: 700,000 [212] [213] Sverdlovsk anthrax leak: 1979 ...
The surge in flu cases also comes amid concerns about high infection rates for other viruses including RSV, COVID-19 and the gastrointestinal bug norovirus. ... the CDC estimated that the flu ...
The Great Influenza: The Story of the Deadliest Plague in History (originally subtitled The Epic Story of the Deadliest Pandemic in History) is a 2004 nonfiction book by John M. Barry that examines the Spanish flu, a 1918-1920 flu pandemic and one of the worst pandemics in history.
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.
In the 1957 "Asian flu" and 1968 "Hong Kong flu" pandemics, flu strains were caused by reassortment between an avian virus and a human virus. [ 2 ] [ 3 ] In addition, the H1N1 virus responsible for the 2009 swine flu pandemic has an unusual mix of swine, avian and human influenza genetic sequences.