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The difference between the influenza mortality age-distributions of the 1918 epidemic and normal epidemics. Deaths per 100,000 persons in each age group, United States, for the interpandemic years 1911–1917 (dashed line) and the pandemic year 1918 (solid line). [57] The Spanish flu pandemic lasted from 1918 to 1920. [58]
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.
For the 1918 flu, people infected numbers (500 million), mortality rate (2~3%) contradict the deaths worldwide "20–100 million" statements. Review needed. Lead: Johnson NPAS, Mueller (2002). "Updating the Accounts: Global Mortality of the 1918–1920 Spanish Influenza Pandemic". Kilbourne ED (January 2006). "Influenza pandemics of the 20th ...
In 1918, the world's population was menaced by a virus now known as influenza. The "flu," for short, has become a commonality that is widely misunderstood, even a century after it claimed 50 ...
1918 Flu: Influenza A/H1N1: 17–100 million 1–5.4% of global population [4] 1918–1920 Worldwide 2 Plague of Justinian: Bubonic plague 15–100 million 25–60% of European population [5] 541–549 North Africa, Europe, and Western Asia 3 HIV/AIDS pandemic: HIV/AIDS: 44 million (as of 2025) – 1981–present [6] Worldwide 4 Black Death ...
Flu season is an annually recurring time period characterized by the prevalence of an outbreak of influenza (flu). The season occurs during the cold half of the year in each hemisphere. It takes approximately two days to show symptoms. Influenza activity can sometimes be predicted and even tracked geographically.
Americans are in the throes of flu season in large swaths of the country. Data − from traces in wastewater to hospitalizations − show higher levels of flu virus circulating in most of the U.S ...
The number of deaths probably exceeded one million, mostly among the very young and very old. [68] This was the first flu pandemic to occur in the presence of a global surveillance system and laboratories able to study the novel influenza virus. [34] After the pandemic, H2N2 was the influenza A virus subtype responsible for seasonal influenza. [1]