The modelling is widely used in determining the best strategies for the mitigation of the impact of infectious diseases. Currently. the modelling of a complex system such as the spread of COVID-19 infection is among the topical issues. The aim of this article is graph-based modelling of the COVID-19 infection spread. https://www.spidertattooz.com/Army-Patch-44th-Infantry-Brigade-Combat-Team-embroidered-on-OCP/