![]() Symptoms may begin one to fourteen days after exposure to the virus. Symptoms of COVID‑19 are variable, but often include fever, cough, headache, fatigue, breathing difficulties, loss of smell, and loss of taste. The disease quickly spread worldwide, resulting in the COVID-19 pandemic. The first known case was identified in Wuhan, China, in December 2019. (2020).Coronavirus disease 2019 ( COVID-19) is a contagious disease caused by a virus, the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). COVID-19 rate no higher with HIV in largest US HIV+/HIV- cohort. The species severe acute respiratory syndrome-related coronavirus: Classifying 2019-nCoV and naming it SARS-CoV-2.
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