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[[File:Logo Monografía.jpg|left|thumb|300px|Map: Origins and spread of COVID-19 in China. 2020. China.]]
[[File:Logo MonografíaWorld_Origin-and-spread-of-COVID--19_2020_map_17781_eng.jpg|right|thumb|300px|Map: Origins Origin and spread of COVID-19. 2020. World. [//centrodedescargas.cnig.es/CentroDescargas/busquedaRedirigida.do?ruta=PUBLICACION_CNIG_DATOS_VARIOS/aneTematico/World_Origin-and-spread-of-COVID--19_2020_map_17781_eng.pdf PDF]. [//centrodedescargas.cnig.es/CentroDescargas/busquedaRedirigida.do?ruta=PUBLICACION_CNIG_DATOS_VARIOS/aneTematico/World_Origin-and-spread-of-COVID--19_2020_map_17781_eng.zip Data].]]
When analysing the spatial diffusion by country, it is helpful to differentiate the results in absolute and relative terms. On the one hand, China went from being the origin of the infection to playing a very discreet role in the global ranking. In absolute terms, the United States ranked as the world leader in terms of the total number of patients from the end of March 2020, with Brazil ranking second behind it. These two countries, with over 500 million inhabitants between the two, have clearly topped all statistics in absolute terms since then. By contrast, in relative terms, Chile and the European States most impacted during the first wave, such as Belgium, Spain and Sweden, stand out for their high incidence amongst smaller populations. In other large countries, such as Russia and India, cases evolved in an ascending pattern before reaching a certain level of control, and they were amongst the top five countries for the total amount of infections throughout the whole period under study.
