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Covid-19
Covid-19 is a disease caused by a coronavirus virion. The virus first appeared in November of 2019 (hence Covid-19) in Wuhan, Hubei Province, China. The outbreak of this viral disease was believed to have arisen at a Wuhan wet market where several animal species were kept in close proximity. This increases the chance of a zoonotic spillover, a process by which viruses jump from one species to another. Bats are the natural reservoirs of coronaviruses. The virus is believed to have come from a bat, infected a pangolin, where it then made the jump to humans.