Title: Influenza pandemic of 1918 Content: The Influenza pandemic of 1918 (commonly known as the Spanish flu) was a serious pandemic of influenza. It lasted for three years, from January 1918 to December 1920. About 500 million people were infected across the world with a population of 1.80 billion people. The pandemic spread to remote Pacific Islands and the Arctic. It killed 50 million to 100 million people— three to five percent of the world's population at the time. This means it was one of the deadliest natural disasters in human history. To maintain morale, wartime censors reduced reports of illness and mortality in Germany, Britain (United Kingdom), France, and the United States; but papers could report the epidemic's effects in neutral Spain (such as the grave illness of King Alfonso XIII). This situation created the false impression of Spain being especially hard-hit. It also resulted in the nickname Spanish flu. Often, influenza outbreaks kill young people, or the elderly, or those patients that are already weakened. This was not the case for the 1918 pandemic, which killed mainly healthy young adults. Modern research, using virus taken from the bodies of frozen victims, has concluded that the virus kills through a cytokine storm (overreaction of the body's immune system). The strong immune reactions of young adults ravaged the body. But, the weaker immune systems of children and middle-aged adults caused fewer deaths among those groups. There is not enough historical and epidemiological data to show where the pandemic started. The pandemic may be a cause of the outbreak of encephalitis lethargica in the 1920s. Another flu pandemic had happened in the 21st century that turns out to be new strain of H1N1. The outbreak began in Mexico and then the United States; spread to the world. ==Gallery== File:Spanish flu death chart.png|Number of deaths in New York City, Berlin, Paris, and London (Museum of Health & Medicine, Washington), c. 1918–1919 File:1918 flu outbreak2.jpg|Two American Red Cross nurses demonstrated treatment practices during the influenza pandemic of 1918. Image:Sp-flu-alberta-field.jpg|Albertan farmers wore masks to protect themselves from the flu. Image:165-WW-269B-25-police-l restored.jpg|Policemen wearing masks provided by the American Red Cross in Seattle, 1918 Image:165-WW-269B-11-trolley-l.jpg|A street car conductor in Seattle in 1918 refusing to allow passengers aboard who are not wearing masks Image:1918FluVictimsStLouis.jpg|Red Cross workers remove a flu victim in St. Louis, Missouri (1918) Image:SpanishFluWardWalterReed.jpg|Influenza ward at Walter Reed Hospital during the Spanish flu pandemic of 1918–1919 Image:Spanish flu victims burial North River Labrador 1918.JPG|Burying flu victims, North River, Canada (1918) Image:1919FluVictimsTokyo.jpg|1919 Tokyo, Japan Image:1919FluVictims_Japanese_Poster.jpg|Japanese poster in 1919 File:1918 flu outbreak RedCrossLitterCarriersSpanishFluWashingtonDC.jpg|Demonstration at the Red Cross Emergency Ambulance Station in Washington, D.C., during the influenza pandemic of 1918 File:Kavalleriedenkmal Lueg 01 09.jpg|Cavalry memorial on the hill Lueg, memory of the Bernese cavalrymen victims of the 1918 flu pandemic; Emmental, Bern, Switzerland