arXiv subjects

Alessandra M. Silva

Publications and source records attributed to Alessandra M. Silva.

2 recordsLinked to original sources

arXiv2021

Herd immunity for Covid-19 in homogeneous populations

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.

q-bio.PE↗

arXiv2020

A matlab code to compute reproduction numbers with applications to the Covid-19 outbreak

We discuss the generation of various reproduction ratios or numbers that are very useful to monitor an ongoing epidemic like Covid-19 and examine the effects of intervention measures. A detailed SEIR algorithm is described for their computation, with applications given to the current Covid-19 outbreaks in a number of countries (Argentina, Brazil, France, Italy, Mexico, Spain, UK and USA). The corresponding matlab script, complete and ready to use, is provided for free downloading.

q-bio.PE↗