id author title date pages extension mime words sentences flesch summary cache txt cord-312267-0tb08b0z Freitas, A. S. New S.I.R. model used in the projection of COVID 19 cases in Brazil 2020-05-01 .txt text/plain 4577 185 51 The model presented here describes with reasonable agreement the number of COVID-19 cases registered in Brazil between February 26 and April 25, 2020 based on the hypothesis that there a large number no notified cases (11 to 1) and variation in contagion rate according to social isolation measures and greater or lesser exposure to the virus (highest rate in beginning from epidemic). . Fig. 1 shows the behavior of the curves of infected and exposed individuals (that still didn't contract the disease) in function time, in agreement with the model proposed in this wo qualitative way, however there is slight dependence between the date which the peak of infection occurs and total percentage of infected (number of accumulated cases) at the peak of infection: the larger infected and if the total number of infected is greater (especially in the epidemic peak), the impact on health system is considerably greater (taking into account the same rate of contagion in two cases) . ./cache/cord-312267-0tb08b0z.txt ./txt/cord-312267-0tb08b0z.txt