id author title date pages extension mime words sentences flesch summary cache txt cord-151030-5x3ztp1n Piasecki, Tomasz A new SEIR type model including quarantine effects and its application to analysis of Covid-19 pandemia in Poland in March-April 2020 2020-05-29 .txt text/plain 7559 461 59 title: A new SEIR type model including quarantine effects and its application to analysis of Covid-19 pandemia in Poland in March-April 2020 We focus on modelling the time period when the social distancing measures were in place and then consider different scenarios of relaxation of the restrictions with possible improvement of testing and contact tracing. Further, to acknowledge the capacity limits of the public health system to perform the contact tracing, we introduce a quantity K max , describing the maximum number of people who can be put in quarantine during one time step. We estimate the transmission rates β by fitting the model predictions to the data on the cumulative number of confirmed cases. In case κ = 0.2, so assuming that currently only 20% of infections are diagnosed, the low values of R are due to low β 3 rather than the effect of quarantine (controlling epidemic by social contact restrictions). ./cache/cord-151030-5x3ztp1n.txt ./txt/cord-151030-5x3ztp1n.txt