# Tom Britton: Basic reproduction numbers, effective reproduction numbers and herd immunity

**Time: **
Wed 2020-05-27 15.15 - 16.00

**Lecturer: **
Tom Britton, Stockholms universitet

**Location: **
Zoom, registration required

## Abstract

We start by defining some basic concepts for the simplest epidemic model and then extend the results to a wider class of epidemic models allowing for some population heterogeneities. We end by showing an important new result: the disease-induced herd immunity level \(h_D\) is smaller than the classical herd immunity level \(h_C=1-1/R_0\).

**How to get registered:**

Since recently all events at Matstat require preliminary registration. In order to get registered for this event, please send an email to Dmitry Otryakhin,
otryakhin@math.su.se
.