id author title date pages extension mime words sentences flesch summary cache txt cord-312905-8xlt92pl Li, Guanjian Asymptomatic and Presymptomatic Infectors: Hidden Sources of COVID-19 Disease 2020-04-09 .txt text/plain 690 61 58 At the time of writing this paper, the authors claimed that "evidence regarding transmission from individuals with asymptomatic infection or mild illness is limited", but that the current evidence may need an update. Recently, two epidemiological studies on COVID-19 have reported that typically asymptomatic carriers transmit the virus to close contacts, resulting in aggregated infection of symptomatic COVID-19 diseases [2, 3] . This study used a prospective design to follow up the viral load and clinical manifestations of 2147 close contacts of symptomatic and asymptomatic COVID-19 cases. The authors suggested that the transmission ability of asymptomatic individuals should not be ignored. First Mildly Ill, Non-Hospitalized Case of Coronavirus Disease 2019 (COVID-19) Without Viral Transmission in the United States Clinical characteristics of 24 asymptomatic infections with COVID-19 screened among close contacts in Nanjing The epidemiological characteristics of infection in close contacts of COVID-19 in Ningbo city ./cache/cord-312905-8xlt92pl.txt ./txt/cord-312905-8xlt92pl.txt