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1918 Spanish Flu The 1918 influenza pandemic was the most severe in recent history. It was caused by an H1N1 virus. It is unknown where the disease's epicenter originated, but it spread very quickly worldwide from 1918-1919.  In the United States, it was first identified in military personnel returning from the war in the spring of 1918. It is estimated that about 500 million people, or one-third of the world’s population, became infected with this virus. The number of deaths was estimated to be at least 50 million worldwide, with about 675,000 occurring in the United States. 1956 Asian Flu (H2N2) In February 1957, a new influenza A (H2N2) virus emerged in East Asia, triggering a pandemic. It was first reported in Singapore in February 1957, Hong Kong in April 1957, and in coastal cities in the United States in the summer of 1957. The estimated deaths were 1.1 million worldwide and 116,000 in the United States. 1968 Hong Kong Flu (H3N2) The 1968 pandemic was ca

Definition: Merriam-Webster. Pandemic: Illness from a virus occurring over a wide geographic area and affecting an exceptionally high proportion of the population: Immunity: A condition of being able to resist a particular disease. Coronavirus: Covid-19 (Coronavirus Disease 2019) The Virology study has estimated that one and a half million dormant virus exists in wildlife. Coronavirus is the latest virus outbreak from the influenza family; the official name is SARS Covid-2. Viruses cannot survive without a host. COVID-19 is an airborne virus; it transfers to humans through the eyes, nose, and mouth; the virus locks itself to a cell and begins multiplying in silence; it is the incubation period. There are seven coronaviruses; 4 of them are more commune, like the commune cold and the flu. The other three are more infectious and deadliest, like SARS, MERS, and COVID. Where is Covid 19 Originated? Source youtube. Human behavior has facilitated dormant viruses in