id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-152238-z0gysxni	Aronna, M. Soledad	A model for COVID-19 with isolation, quarantine and testing as control measures	2020-05-15		.txt	text/plain	8883	519	61	We take into account the presence of asymptomatic infections and the main policies that have been adopted so far to contain the epidemic: isolation (or social distancing) of a portion of the population, quarantine for confirmed cases and testing. In the proposed model, the proportion of people in isolation, the level of contact reduction and the testing rate are control parameters that can vary in time, representing policies that evolve in different stages. These constants may be used as control parameters, via the tuned lockdown as decided by the public policies (reflecting on p and partially on r), the awareness of the population in respecting the social distancing among individuals and in the widespread use of personal protection equipment (expressed by β and partially by r), the availability of testing kits, that results in a higher or lower value of ρ. In our model, since the groups of active individuals and in r-isolation evolve differently (see Scenario A 4 and Figure 4 below), the time-dependent reproduction number R(t) is given by the formula (4) where ϕ in (5) is	./cache/cord-152238-z0gysxni.txt	./txt/cord-152238-z0gysxni.txt