id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-145906-4vgbzcx8	Chae, Seo Yoon	Estimation of Infection Rate and Prediction of Initial Infected Individuals of COVID-19	2020-04-27		.txt	text/plain	1429	107	62	We estimated the infection rate and the initial infected individuals of COVID-19 by using the officially reported data at the early stage of the epidemic for the susceptible (S), infectable (I), quarantined (Q), and the cofirmed recovered (Rk) population model, so called SIQRk model. In the SIQRk model we can estimated the model parameters and the initial infecting cases (confirmed ans asymtomatic cases) from the data fits. We obtained the infection rate in the range between 0.233 and 0.462, the basic reproduction number Ro in the range between 1.8 and 3.5, and the initial number of infected individuals in the range betwee 10 and 8409 for some selected countries. We propose the parameters included in the dynamic equations and the initial number of infecting cases which is sum of the officially known cases and the unknown population of the asymptomatic cases.	./cache/cord-145906-4vgbzcx8.txt	./txt/cord-145906-4vgbzcx8.txt