Event

# An extended SIR model for the spread of COVID-19 in different communities

• ### Thu 15 Oct 20

15:00 - 16:00

• ### Online

Zoom (ID 978 6853 5544)

• ### Event speaker

Dr Chris Antonopoulos

• ### Event type

Lectures, talks and seminars
Mathematical Sciences Departmental Seminar

• ### Event organiser

Mathematical Sciences, Department of

• ### Contact details

Jesus Martinez-Garcia

These Departmental Seminars are for everyone in Maths. We encourage anyone interested in the subject in general, or in the particular subject of the seminar, to come along. It's a great opportunity to meet people in the Maths Department and join in with our community.

### An extended SIR model for the spread of COVID-19 in different communities

In this paper, we study the effectiveness of the modelling approach on the pandemic due to the spreading of the novel COVID-19 disease and develop an extended-susceptible-infected-removed (eSIR) model that provides a theoretical framework to investigate its spread within a community.

The eSIR model is based upon the well-known susceptible-infected-removed (SIR) model with the difference that a total population is not defined or kept constant per se and the number of susceptible individuals does not decline monotonically. To the contrary, as we show herein, it can be increased in surge periods!

In particular, we investigate the time evolution of different populations and monitor diverse significant parameters for the spread of the disease in various communities, represented by countries and the state of Texas in the USA. The eSIR model can provide us with insights and predictions of the spread of the virus in communities that recorded data alone cannot.

Our work shows the importance of modelling the spread of COVID-19 by the eSIR model that we propose here, as it can help to assess the impact of the disease by offering valuable predictions. Our analysis takes into account data from January to June, 2020, the period that contains the data before and during the implementation of strict and control measures.

We propose predictions on various parameters related to the spread of COVID-19 and on the number of susceptible, infected and removed populations until September 2020. By comparing the recorded data with the data from our modelling approaches, we deduce that the spread of COVID-19 can be under control in all communities considered, if proper restrictions and strong policies are implemented to control the infection rates early from the spread of the disease.

### Speaker

Dr Chris Antonopoulos (University of Essex)

### How to attend

If not a member of the Dept. Mathematical Science at the University of Essex, you can register your interest in attending the seminar and request the Zoom’s meeting password by emailing Dr Jesus Martinez-Garcia (jesus.martinez-garcia@essex.ac.uk).