id author title date pages extension mime words sentences flesch summary cache txt cord-223212-5j5r6dd5 Hult, Henrik Estimates of the proportion of SARS-CoV-2 infected individuals in Sweden 2020-05-25 .txt text/plain 3894 209 53 To capture heterogeneity in the population and the effect of interventions to reduce the rate of epidemic spread, the model uses a time-varying contact rate, whose logarithm has a Gaussian process prior. A Poisson point process is used to model the occurrence of deaths due to COVID-19 and the model is calibrated using data of daily death counts in combination with a snapshot of the the proportion of individuals with an active infection, performed in Stockholm in late March. In this paper an SEIR epidemic model with time-varying contact rate will be used to model the evolution of the number of susceptible (S), exposed (E), infected (I), and recovered (R) individuals. The main extensions include the introduction of the Poisson point process to model the occurrence of deaths, the addition of random sampling to test for infection, and an extension to multiple regions. ./cache/cord-223212-5j5r6dd5.txt ./txt/cord-223212-5j5r6dd5.txt