Herd immunity for Covid-19 in homogeneous populations

Abstract

In this note we estimate herd immunity levels for the Covid-19 epidemic using a standard SEIR system that models the disease dynamics in homogeneous populations. The results obtained are indicative of values between 80% and 90% for unprotected, fully susceptible populations. Basic protective measures such as hand hygiene and mask wearing may be effective to lower herd immunity levels down to values between 50% and 60% of the total population.

Estimation of herd immunity levels for covid-19 on several countries based data for the year 2020 available at https://www.worldometers.info/coronavirus/. arXiv admin note: text overlap with arXiv:2006.13752