id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
cord-146213-924ded7t	Kiamari, Mehrdad	COVID-19 Risk Estimation using a Time-varying SIR-model	2020-08-11		.txt	text/plain	3691	132	50	For discrete-time cases such as daily reporting on number of infected cases, the time-variant effective contact rate β t , which represents the contact rate for time slot t can be derived by solving the following equation: Therefore, the time-variant effective reproduction number would be defined as R t βt σ . In accordance with LA county daily press releases, there is a sharp jump in both R t and risk score around the beginning of July.	cache/cord-146213-924ded7t.txt	txt/cord-146213-924ded7t.txt
