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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.
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.
1957–1958 influenza pandemic: Influenza A/H2N2: 1–4 million – 1957–1958 Worldwide 12 Hong Kong flu: Influenza A/H3N2: 1–4 million – 1968–1969 Worldwide 10 1918–1922 Russia typhus epidemic: Typhus: 2–3 million 1–1.6% of Russian population [14] 1918–1922 Russia: 13 Cocoliztli epidemic of 1576: Cocoliztli 2–2.5 million
From 1918 to 1920, the Spanish flu pandemic became the most devastating influenza pandemic and one of the deadliest pandemics in history. The pandemic, caused by an H1N1 strain of influenza A, [80] likely began in the United States before spreading worldwide via soldiers during and after the First World War. The initial wave in the first half ...
The 1967–1968 flu season was the last to be dominated by H2N2 before the emergence of H3N2 in 1968 and the consequent "Hong Kong flu" pandemic that lasted until 1970. This season was particularly severe in England and France, in which pneumonia and influenza excess mortality was two to three times greater than in other countries. [ 54 ]
It was one of the deadliest pandemics in human history. Soldiers march in front of the Pomona College Carnegie Library during the Spanish flu pandemic in 1918, all garbed in uniforms and face masks. The 1918 flu caused an abnormally high number of deaths, possibly due to it provoking a cytokine storm in the body.
The 1957–1958 Asian flu pandemic was a global pandemic of influenza A virus subtype H2N2 that originated in Guizhou in Southern China. [3] [4] [1] The number of excess deaths caused by the pandemic is estimated to be 1–4 million around the world (1957–1958 and probably beyond), making it one of the deadliest pandemics in history.
The 1977 Russian flu was an influenza pandemic that was first reported by the Soviet Union in 1977 and lasted until 1979. [1] [2] The outbreak in northern China started in May 1977, slightly earlier than that in the Soviet Union. [3] [4] The pandemic mostly affected a population younger than 25 or 26 years of age, [1] [5] [6] and was described ...