id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-322486-qwl7nzkr	Omori, Ryosuke	The age distribution of mortality from novel coronavirus disease (COVID-19) suggests no large difference of susceptibility by age	2020-10-06		.txt	text/plain	4857	247	52	We estimated the parameter which describes the age-dependency of susceptibility by fitting the model to reported data, including the effect of change in contact patterns during the epidemics of COVID-19, and the fraction of symptomatic infections. Our study revealed that if the mortality rate or the fraction of symptomatic infections among all COVID-19 cases does not depend on age, then unrealistically different age-dependencies of susceptibilities against COVID-19 infections between Italy, Japan, and Spain are required to explain the similar age distribution of mortality but different basic reproduction numbers (R(0)). Assuming that the age-dependency of mortality by COVID-19 is determined by only age-dependent susceptibility (model 1), i.e., the mortality rate does not depend on age, the exponent parameter, φ, describing the variation of susceptibility among age groups for each country, Italy, Japan, and Spain, was estimated as shown in Fig. 4 .	./cache/cord-322486-qwl7nzkr.txt	./txt/cord-322486-qwl7nzkr.txt