id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-309517-yh4d414y	Yu, Chao	Characteristics of asymptomatic COVID-19 infection and progression: A multicenter, retrospective study	2020-08-12		.txt	text/plain	3498	188	38	In addition, some asymptomatic patients can develop symptoms during hospitalization [6] , and the characteristics of these presymptomatic patients and their independent risk factors have not been addressed yet. Therefore, in the present study, we investigated 79 asymptomatic patients to analyze their clinical characteristics, disease progression, and recurrence of positive SARS-CoV2 RNA after discharge. No intergroup differences were observed in other radiographic characteristics, and patchy shadowing was the most common abnormality Meanwhile, the asymptomatic carriers had normal levels of other markers related to liver damage, renal dysfunction, inflammation, and coagulation, which were comparable with those of the symptomatic patients. Although the presymptomatic patients developed symptoms during hospitalization, these patients had similar viral RNA shedding duration compared with the asymptomatic carriers (14 days [IQR 7-25 days] vs. In our study, the recurrence rate of positive SARS-CoV-2 nucleic acid in the asymptomatic carriers after discharge was lower than that in the symptomatic patients (10.12% vs.	./cache/cord-309517-yh4d414y.txt	./txt/cord-309517-yh4d414y.txt