1931 China Flood | |
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| Total costs | N/A |
| Deaths | 4000000 |
The 1931 China floods, or the 1931 Yangtze–Huai River floods, occurred from June to August 1931 in China, hitting major cities such as Wuhan, Nanjing and beyond, which eventually culminated into a dike breach along Lake Gaoyou on 25 August 1931. Fatality estimates vary widely. A field survey by the University of Nanking led by John Lossing Buck immediately after the flood found '150,000 people had drowned, and that this number represented less than a quarter of all fatalities during the first 100 days of the flood.' The official report found 140,000 drowned and claims that '2 million people died during the flood, having drowned or died from lack of food'. A cholera epidemic in the subsequent year, from May 1932, was officially reported to have 31,974 deaths and 100,666 cases. A popular high-end estimate of 3.7 to 4.0 million fatalities 'enjoys great currency online, helping the 1931 flood to secure its position on sensationalist lists of the world’s deadliest disasters.'
Source: Wikipedia Spanish flu (Influenza A H1N1)1918-1920 | |
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| Total costs | N/A |
| Deaths | 1000000 |
Spanish flu, also known as the Great Influenza epidemic or the 1918 influenza pandemic, was an exceptionally deadly global influenza pandemic caused by the H1N1 influenza A virus. The earliest documented case was March 1918 in Kansas, United States, with further cases recorded in France, Germany and the United Kingdom in April. Two years later, nearly a third of the global population, or an estimated 500 million people, had been infected in four successive waves. Estimates of deaths range from 17 million to 50 million, and possibly as high as 100 million, making it one of the deadliest pandemics in human history. The name 'Spanish flu' is a misnomer, rooted in historical othering of infectious disease origin, which is now avoided. The pandemic broke out near the end of World War I, when wartime censors suppressed bad news in the belligerent countries to maintain morale, but newspapers freely reported the outbreak in neutral Spain. These stories created a false impression of Spain as the epicenter, so press outside Spain adopted the name 'Spanish' flu. Limited historical epidemiological data make the pandemic's geographic origin indeterminate, with competing hypotheses on the initial spread.Most influenza outbreaks disproportionately kill the young and old, with a higher survival rate in-between, but this pandemic had unusually high mortality for young adults. Scientists offer several explanations for the high mortality, including a six-year climate anomaly affecting migration of disease vectors with increased likelihood of spread through bodies of water. The virus was particularly deadly because it triggered a cytokine storm, ravaging the stronger immune system of young adults, although the viral infection was apparently no more aggressive than previous influenza strains. Malnourishment, overcrowded medical camps and hospitals, and poor hygiene, exacerbated by the war, promoted bacterial superinfection, killing most of the victims after a typically prolonged death bed.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, but it mostly affected younger populations. The ongoing pandemic of COVID-19, which began in December 2019 and is caused by SARS-CoV-2, is the deadliest respiratory virus pandemic since the Spanish flu.
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