id author title date pages extension mime words sentences flesch summary cache txt cord-351230-123i465d Van Esch, P. Super spreader cohorts and covid-19 2020-05-20 .txt text/plain 3456 182 61 A simple two-cohort SIR like model can explain the qualitative behaviour of the logarithmic derivative estimations of the covid-19 epidemic evolution as observed in several countries. We had to average the entries over a week because there were weekly periodic effects and the daily data was too noisy, but if one averages over 7 days, and one calculates the logarithmic derivative of the hospital entries, one finds again the same universal curve: In this paper, we try to build a model that displays a similar qualitative behaviour. In order to try to reconcile the behaviour of the logarithmic derivative which points to "herd immunity reached" and the low attack rate in the overall population, we propose to consider a small super-spreader subgroup in the population. With a simple coupled model of a small super spreader population within a general population, we can obtain the qualitative characteristics of the a priori puzzling evolution of the logarithmic derivative of proxies of the covid-19 epidemic evolution as found in several countries. ./cache/cord-351230-123i465d.txt ./txt/cord-351230-123i465d.txt