Resumen: A very simple epidemic model proposed a century ago is the linchpin of the current mathematical models of the epidemic spreading of the COVID-19. Nowadays, the abstracted compartmentalisation of the population in susceptible, infected and recovered individuals, combined with precise information about the networks of mobility flows within geographical territories, is the best weapon of the physics community to forecast the possible evolution of contagions in the current pandemic scenario. Idioma: Inglés DOI: 10.1051/epn/2020507 Año: 2020 Publicado en: Europhysics news 51, 5 (2020), 38-40 ISSN: 0531-7479 Factor impacto SCIMAGO: 0.156 - Physics and Astronomy (miscellaneous) (Q4)