Author: Qu, Jie-Ming; Cao, Bin; Chen, Rong-Chang
Title: Chapter 3 Clinical features of COVID-19 Cord-id: qy4a9yvl Document date: 2021_12_31
ID: qy4a9yvl
Snippet: The incubation period from exposure to symptoms is generally 7–14 days; the shortest is 1 day, the longest is up to 20 days. Fever, fatigue, and dry cough appear to be the most common symptoms at illness onset, but these symptoms, which also present in influenza and other respiratory infections, are nonspecific. Upper respiratory tract symptoms like nasal obstruction and rhinorrhea are relatively rare. In general, the majority of patients have a satisfactory prognosis with a few patients being
Document: The incubation period from exposure to symptoms is generally 7–14 days; the shortest is 1 day, the longest is up to 20 days. Fever, fatigue, and dry cough appear to be the most common symptoms at illness onset, but these symptoms, which also present in influenza and other respiratory infections, are nonspecific. Upper respiratory tract symptoms like nasal obstruction and rhinorrhea are relatively rare. In general, the majority of patients have a satisfactory prognosis with a few patients being critically ill. Fatal cases are commonly seen in the elderly and those with chronic underlying diseases, such as diabetes and heart disease.
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