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Coronavirus disease 2019 (COVID-19) is an infectious disease caused by SARS coronavirus 2 (SARS-CoV-2), a virus closely related to the SARS virus. The disease is the cause of the 2019–20 coronavirus...
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Coronavirus disease 2019 (COVID-19) is an infectious disease caused by SARS coronavirus 2 (SARS-CoV-2), a virus closely related to the SARS virus. The disease is the cause of the 2019–20 coronavirus...