id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-315689-a3tvoana	Tan, Caixia	Asymptomatic SARS-CoV-2 infections: What do we need to know?	2020-05-06		.txt	text/plain	1307	84	51	Those with positive reverse transcription-polymerase chain reaction (RT-PCR) results who never develop any signs or clinically symptoms of COVID-19 are considered asymptomatic infected persons. 10 To date, the exact reasons for no or only mild symptoms in many COVID-19 patients remain unclear, and further research is urgently needed to explore the causes and transmission of asymptomatic infections. 15 Another study conducted by the Department of Statistics and Actuarial Science of the University of Hong Kong concluded that there was no difference in the transmission rates of coronavirus between symptomatic patients and asymptomatic cases. They might be overlooked by healthcare works (HCWs) and possibly trigger a "butterfly effect." Finally, although many detection methods are available, individuals in the "window period" of COVID-19 infection can be missed, and up to 29% of patients could have an initial RT-PCR false-negative result, 17 a paper prepublished on the medRxiv website suggests, so it is possible that a large portion of asymptomatic infections are going undetected.	./cache/cord-315689-a3tvoana.txt	./txt/cord-315689-a3tvoana.txt